AK09912 AKM | Alldatasheet
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[AK09912] MS1547-E-02 2014/7 - 1 - AK09912 3-axis Electronic Compass 1. Features A 3-axis electronic compass IC with high sensitive Hall sensor technology. Best adapted to pedestrian city navigation use for cell phone and other portable appliance. Functions: 3-axis magnetometer device suitable for compass application Built-in A to D Converter for magnetometer data out 16-bit data out for each 3-axis magnetic component Sensitivity: 0.15 µT/LSB (typ.) Serial interface I2C bus interface Standard, Fast and High-speed modes (up to 2.5 MHz) compliant with Philips I2C specification Ver.2.1 4-wire SPI Operation mode Power-down, Single measurement, Continuous measurement, External trigger measurement, Self-test and Fuse ROM access DRDY (Data Ready) function for measurement data ready Magnetic sensor overflow monitor function Built-in oscillator for internal clock source Power on Reset circuit Self test function with internal magnetic source Built-in Noise Suppression Filter (NSF) Built-in temperature sensor Operating temperatures: -30˚C to +85˚C Operating supply voltage: Analog power supply +1.7V to +3.6V Digital Interface supply +1.65V to analog power supply voltage Current consumption: Power-down: 3 µA (typ.) Measurement: Average current consumption at 100 Hz repetition rate: 1 mA (typ.) Package: AK09912C 14 -pin WL-CSP (BGA): 1.6 mm 1.6 mm 0.5 mm (typ.)
[AK09912] MS1547-E-02 2014/7 - 2 - 2. Overview AK09912 is 3-axis electronic compass IC with high sensitive Hall sensor technology. Small package of AK09912 incorporates magnetic sensors for detecting terrestrial magnetism in the X-axis, Y-axis, and Z-axis, a sensor driving circuit, signal amplifier chain, and an arithmetic circuit for processing the signal from each sensor. Self test function is also incorporated. From its compact foot print and thin package feature, it is suitable for map heading up purpose in GPS-equipped cell phone to realize pedestrian navigation function. AK09912 has the following features: (1) Silicon monolithic Hall-effect magnetic sensor with magnetic concentrator realizes 3-axis magnetometer on a silicon chip. Analog circuit, digital logic, power block and interface block are also integrated on a chip. (2) Wide dynamic measurement range and high resolution with lower current consumption. Output data resolution: 16-bit (0.15 µT/LSB) Measurement range: ±4900 µT Average current at 100 Hz repetition rate: 1 mA (typ.) (3) Digital serial interface I2C bus interface to control AK09912 functions and to read out the measured data by external CPU. A dedicated power supply for I2C bus interface can work in low-voltage apply as low as 1.65V . 4-wire SPI is also supported. A dedicated power supply for SPI can work in low-voltage apply as low as 1.65V . (4) DRDY pin and register inform to system that measurement is end and set of data in registers are ready to be read. (5) Device is worked by on-chip oscillator so no external clock source is necessary. (6) Self test function with internal magnetic source to confirm magnetic sensor operation on end products. (7) Built-in NSF (Noise Suppression Filter) keeps magnetic sensor output stable. (8) Built-in temperature sensor to monitor the temperature while operation.
[AK09912] MS1547-E-02 2014/7 - 3 - 3. Table of Contents
[AK09912] MS1547-E-02 2014/7 - 4 -
[AK09912] MS1547-E-02 2014/7 - 5 - 4. Circuit Configuration 4.1. Block Diagram 3-axis Hall sensor MUX SDA/SI DRDY Chopper SW HE-Drive Pre- AMP Integrator＆ADC Interface, Logic & Register SCL/SK VDD VREF Timing Control VID SO OSC1 CSB Magnetic Source CAD0 VSS POR FUSE ROM CAD1 TST1 TRG T-Sensor RSTN Signal Processing OSC2 TST2 4.2. Block Function Block Function 3-axis Hall sensor Monolithic Hall elements. MUX Multiplexer for selecting Hall elements. Chopper SW Performs chopping. HE-Drive Magnetic sensor drive circuit for constant-current driving of sensor. Pre-AMP Fixed-gain differential amplifier used to amplify the magnetic sensor signal. T-Sensor Temperature sensor. Generate a voltage in proportion to temperature. Integrator & ADC Integrates and amplifies pre-AMP output or T-sensor output and performs analog-to-digital conversion. OSC1 Generates an operating clock for sensor measurement. OSC2 Generates an operating periodic clock for sequencer. POR Power On Reset circuit. Generates reset signal on rising edge of VDD. VREF Generates reference voltage and current. Interface Logic Register Exchanges data with an external CPU. DRDY pin indicates sensor measurement has ended and data is ready to be read. I2C bus interface using two pins, namely, SCL and SDA. Standard, Fast and High-speed modes are supported. The low-voltage specification can be supported by applying 1.65V to the VID pin. 4-wire SPI is also supported by SK, SI, SO and CSB pins. 4-wire SPI works in VID pin voltage down to 1.65 V, too. Signal Processing Noise suppression function by the filtering process. Filtering process can be enabled or disabled. Timing Control Generates a timing signal required for internal operation from a clock generated by the OSC1. Magnetic Source Generates magnetic field for self test of magnetic sensor. FUSE ROM Fuse ROM for adjustment.
[AK09912] MS1547-E-02 2014/7 - 6 - 4.3. Pin Function Pin No. Pin name I/O Power supply Type Function A1 DRDY O VID CMOS Data Ready output pin. “H” active. Informs measurement ended and data is ready to be read. A2 CSB I VID CMOS Chip select pin for 4-wire SPI. “L” active. Connect to VID when selecting I2C bus interface. A3 SCL I VID CMOS When the I2C bus interface is selected (CSB pin is connected to VID). SCL: Control clock input pin Input: Schmitt trigger SK When the 4-wire SPI is selected. SK: Serial clock input pin. A4 SDA I/O VID CMOS When the I2C bus interface is selected (CSB pin is connected to VID). SDA: Control data input/output pin Input: Schmitt trigger, Output: Open drain SI I When the 4-wire SPI is selected. SI: Serial data input pin B1 VDD - - Power Positive power supply pin. B3 TST2 O VID CMOS Test pin. Connect to VSS or keep this pin non-connected. B4 SO O VID CMOS When the I2C bus interface is selected (CSB pin is connected to VID) Hi-Z output. Keep this pin electrically non-connected. When the 4-wire SPI is selected. Serial data output pin C1 VSS - - Power Ground pin C2 TST1 I VDD CMOS Test pin. Pulled down by 100kΩ internal resister. Keep this pin electrically non-connected or connect to VSS. C3 TRG I VID CMOS External trigger pulse input pin. Enabled only in External trigger measurement mode. Pulled down by 100kΩ internal resister. When External trigger measurement mode is not in use, keep this pin electrically non-connected or connect to VSS. C4 VID - - Power Digital interface positive power supply pin. D1 CAD0 I VDD CMOS When the I2C bus interface is selected (CSB pin is connected to VID) CAD0:Slave address 0 input pin Connect to VSS or VDD. When the 4-wire serial interface is selected. Connect to VSS. D2 CAD1 I VDD CMOS When the I2C bus interface is selected (CSB pin is connected to VID). CAD1:Slave address 1 input pin Connect to VSS or VDD. When the 4-wire serial interface is selected. Connect to VSS. D4 RSTN I VID CMOS Reset pin. Resets registers by setting to “L”. Connect to VID when not in use.
[AK09912] MS1547-E-02 2014/7 - 7 - 5. Overall Characteristics 5.1. Absolute Maximum Ratings Vss=0V Parameter Symbol Min. Max. Unit Power supply voltage (Vdd, Vid) V+ -0.3 +4.3 V Input voltage VIN -0.3 （V+）+0.3 V Input current IIN - ±10 mA Storage temperature Tst -40 +125 ˚C (Note 1) If the device is used in conditions exceeding these values, the device may be destroyed. Normal operations are not guaranteed in such exceeding conditions. 5.2. Recommended Operating Conditions Vss=0V Parameter Remark Symbol Min. Typ. Max. Unit Operating temperature Ta -30 +85 ˚C Power supply voltage VDD pin voltage Vdd 1.7 3.0 3.6 V VID pin voltage Vid 1.65 Vdd V 5.3. Electrical Characteristics The following conditions apply unless otherwise noted: Vdd=1.7V to 3.6V, Vid=1.65V to Vdd, Temperature range=-30 ˚C to 85 ˚C 5.3.1. DC Characteristics Parameter Symbol Pin Condition Min. Typ. Max. Unit High level input voltage 1 VIH1 CSB RSTN TRG 70%Vid V Low level input voltage 1 VIL1 30%Vid V High level input voltage 2 VIH2 SK/SCL SI/SDA 70%Vid Vid+0.3 V Low level input voltage 2 VIL2 -0.3V 30%Vid V High level input voltage 3 VIH3 CAD0 CAD1 TST1 70%Vdd V Low level input voltage 3 VIL3 30%Vdd V Input current 1 IIN1 SK/SCL SI/SDA CSB RSTN Vin=Vss or Vid -10 +10 µA CAD0 CAD1 Vin=Vss or Vdd -10 +10 Input current 2 IIN2 TRG Vin=Vid 100 µA Input current 3 IIN3 TST1 Vin=Vdd 100 µA Hysteresis input voltage (Note 2) VHS SCL SDA Vid≥2V 5%Vid V Vid<2V 10%Vid High level output voltage 1 VOH1 SO DRDY TST2 IOH≥-100µA 80%Vid V Low level output voltage 1 VOL1 IOL≤+100µA 20%Vid V Low level output voltage 2 (Note 3) VOL2 SDA IOL≤+3mA Vid≥2V 0.4 V IOL≤+3mA Vid<2V 20%Vid V
[AK09912] MS1547-E-02 2014/7 - 8 - Current consumption (Note 4) IDD1 VDD VID Power-down mode Vdd=Vid=3.0V 3 6 µA IDD2 When magnetic sensor is driven 1.4 2.3 mA IDD3 Self-test mode 3.4 5 mA IDD4 When temperature sensor is driven 1 1.5 mA IDD5 (Note 5) 0.1 5 µA (Note 2) Schmitt trigger input (reference value for design) (Note 3) Output is open-drain. Connect a pull-up resistor externally (Note 4) Without any resistance load (Note 5) (case 1) Vdd=ON, Vid=ON, RSTN pin=“L”. (case 2) Vdd=ON, Vid=OFF (0V), RSTN pin=“L”. (case 3) Vdd=OFF (0V), Vid=ON. 5.3.2. AC Characteristics Parameter Symbol Pin Condition Min. Typ. Max. Unit Power supply rise time (Note 6) PSUP VDD VID Period of time that VDD (VID) changes from 0.2V to Vdd (Vid). 50 ms POR completion time (Note 6) PORT Period of time after PSUP to Power-down mode(Note 7) 100 µs Power supply turn off voltage (Note 6) SDV VDD VID Turn off voltage to enable POR to restart(Note 7) 0.2 V Power supply turn on interval (Note 6) PSINT VDD VID Period of time that voltage lower than SDV needed to be kept to enable POR to restart(Note 7) 100 µs Wait time before mode setting Twat 100 µs Wait time of Fuse ROM reading Twatr Wait time from Fuse ROM access mode setting to accessible Fuse ROM 100 µs (Note 6) Reference value for design. (Note 7) When POR circuit detects the rise of VDD/VID voltage, it resets internal circuits and initializes the registers. After reset, AK09912 transits to Power-down mode. 0V PSINT:100us PSUP:50ms PORT:100us Power-down mode SDV:0.2V Twat:100us VDD/VID Power-down mode Fuse ROM access mode モード Twatr:100us Accessible Fuse ROM
[AK09912] MS1547-E-02 2014/7 - 9 - Parameter Symbol Pin Condition Min. Typ. Max. Unit Trigger input effective pulse width tTRIGH TRG 200 ns Trigger input effective frequency (Note 8) tTRIGf TRG 100 Hz (Note 8) The value when the period of time from the end of the measurement to the next trigger input is 1.3ms. VIH tTRIGH Parameter Symbol Pin Condition Min. Typ. Max. Unit Reset input effective pulse width (“L”) tRSTL RSTN 5 µs VIL tRSTL 5.3.3. Analog Circuit Characteristics Parameter Symbol Condition Min. Typ. Max. Unit Measurement data output bit DBIT - 16 - bit Time for measurement TSM Single measurement mode 7.2 8.5 ms Magnetic sensor sensitivity (Note 9) BSE Tc = 25 ˚C 0.1425 0.15 0.1575 µT/LSB Magnetic sensor measurement range(Note 10) BRG Tc = 25 ˚C ±4912 µT Magnetic sensor initial offset (Note 11) Tc = 25 ˚C -2000 +2000 LSB (Note 9) Value after sensitivity is adjusted using sensitivity fine adjustment data stored in Fuse ROM. (Note 10) Reference value for design (Note 11) Value of measurement data register on shipment without applying magnetic field on purpose.
[AK09912] MS1547-E-02 2014/7 - 10 - 5.3.4. 4-wire SPI 4-wire SPI is compliant with mode 3 (SPI-mode3). Parameter Symbol Condition Min. Typ. Max. Unit CSB setup time Tcs 50 ns Data setup time Ts 50 ns Data hold time Th 50 ns SK high time Twh Vid2.5V 100 ns 2.5V>Vid1.65V 150 ns SK low time Twl Vid2.5V 100 ns 2.5V>Vid1.65V 150 ns SK setup time Tsd 50 ns SK to SO delay time (Note 12) Tdd 50 ns CSB to SO delay time (Note 12) Tcd 50 ns SK rise time (Note 13) Tr 100 ns SK fall time (Note 13) Tf 100 ns CSB high time Tch 150 ns (Note 12) SO load capacitance:20pF (Note 13) Reference value for design. [4-wire SPI] CSB SK SI Tcs SO Ts Tsd Tcd Th Tdd Hi-Z Hi-Z Twh Twl ｌ Tch [Rise time and fall time] SK Tr Tf 0.9Vid 0.1Vid
[AK09912] MS1547-E-02 2014/7 - 11 - 5.3.5. I2C Bus Interface CSB pin = “H” I2C bus interface is compliant with Standard mode and Fast mode. Standard/Fast mode is selected automatically by fSCL. Standard mode fSCL≤100kHz Symbol Parameter Min. Typ. Max. Unit fSCL SCL clock frequency 100 kHz tHIGH SCL clock “High” time 4.0 µs tLOW SCL clock “Low” time 4.7 µs tR SDA and SCL rise time 1.0 µs tF SDA and SCL fall time 0.3 µs tHD:STA Start Condition hold time 4.0 µs tSU:STA Start Condition setup time 4.7 µs tHD:DAT SDA hold time (vs. SCL falling edge) 0 µs tSU:DAT SDA setup time (vs. SCL rising edge) 250 ns tSU:STO Stop Condition setup time 4.0 µs tBUF Bus free time 4.7 µs Fast mode 100Hz≤fSCL≤400kHz Symbol Parameter Min. Typ. Max. Unit fSCL SCL clock frequency 400 kHz tHIGH SCL clock “High” time 0.6 µs tLOW SCL clock “Low” time 1.3 µs tR SDA and SCL rise time 0.3 µs tF SDA and SCL fall time 0.3 µs tHD:STA Start Condition hold time 0.6 µs tSU:STA Start Condition setup time 0.6 µs tHD:DAT SDA hold time (vs. SCL falling edge) 0 µs tSU:DAT SDA setup time (vs. SCL rising edge) 100 ns tSU:STO Stop Condition setup time 0.6 µs tBUF Bus free time 1.3 µs tSP Noise suppression pulse width 50 ns [I2C bus interface timing] 1/fSCL SCL VIH2 VIL2 tHIGH SCL SDA VIH2 tLOW tBUF tHD:STA tR tF tHD:DAT tSU:DAT tSU:STA Stop Start Start Stop tSU:STO VIL2 VIH2 VIL2 tSP
[AK09912] MS1547-E-02 2014/7 - 12 - High-speed mode (Hs-mode) Cb≤100pF (Cb: load capacitance) fSCLH≤2.5MHz Symbol Parameter Min. Typ. Max. Unit fSCLH SCLH clock frequency 2.5 MHz tHIGH SCLH clock “High” time 110 ns tLOW SCLH clock “Low” time 220 ns tR_CL SCLH rise time 10 40 ns tR_CL1 SCLH rise time after a repeated START condition and after an acknowledge bit 10 80 ns tR_DA SDAH rise time 10 80 ns tF_CL SCLH fall time - 40 ns tF_DA SDAH fall time - 80 ns tHD:STA Start Condition hold time 160 ns tSU:STA Start Condition setup time 160 ns tHD:DAT SDAH hold time (vs. SCLH falling edge) 0 ns tSU:DAT SDAH setup time (vs. SCLH rising edge) 10 ns tSU:STO Stop Condition setup time 160 ns tSP Noise suppression pulse width 10 ns Cb≤400pF fSCLH≤1.7MHz Symbol Parameter Min. Typ. Max. Unit fSCLH SCLH clock frequency 1.7 MHz tHIGH SCLH clock “High” time 120 ns tLOW SCLH clock “Low” time 320 ns tR_CL SCLH rise time 20 80 ns tR_CL1 SCLH rise time after a repeated START condition and after an acknowledge bit 20 160 ns tR_DA SDAH rise time 20 160 ns tF_CL SCLH fall time - 80 ns tF_DA SDAH fall time - 160 ns tHD:STA Start Condition hold time 160 ns tSU:STA Start Condition setup time 160 ns tHD:DAT SDAH hold time (vs. SCLH falling edge) 0 ns tSU:DAT SDAH setup time (vs. SCLH rising edge) 10 ns tSU:STO Stop Condition setup time 160 ns tSP Noise suppression pulse width 10 ns
[AK09912] MS1547-E-02 2014/7 - 13 - [I2C bus interface timing of Hs-mode] VIH2 VIL2 VIH2 VIL2 SDAH SCLH START START STOP tF_DA tR_DA tR_CL1 tR_CL1 tR_CL tF_CL tHIGH tLOW tHIGH tHD:DAT tSU:DAT tSU:STO tSU:STA tHD:STA SCLH VIH2 VIL2 1/fSCLH
[AK09912] MS1547-E-02 2014/7 - 14 - 6. Function Explanation 6.1. Power States When VDD and VID are turned on from Vdd=OFF (0V) and Vid=OFF (0V), all registers in AK09912 are initialized by POR circuit and AK09912 transits to Power-down mode. All the states in the table below can be set, although the transition from state 2 to state 3 and the transition from state 3 to state 2 are prohibited. Table 6.1 Power state State VDD VID Power state 1 OFF (0V) OFF (0V) OFF (0V). It doesn’t affect external interface. Digital input pins other than SCL and SDA pin should be fixed to “L” (0V). 2 OFF (0V) 1.65V to 3.6V OFF (0V) It doesn’t affect external interface. 3 1.7V to 3.6V OFF (0V) OFF(0V) It doesn’t affect external interface. Digital input pins other than SCL and SDA pin should be fixed to “L” (0V). 4 1.7V to 3.6V 1.65V to Vdd ON 6.2. Reset Functions When the power state is ON, always keep Vid≤Vdd. Power-on reset (POR) works until Vdd reaches to the operation effective voltage (about 1.1V: reference value for design) on power-on sequence. After POR is deactivated, all registers are initialized and transits to power down mode. When Vdd=1.7 to 3.6V, POR circuit and VID monitor circuit are active. When Vid=0V, AK09912 is in reset status and it consumes the current of reset state (IDD5). AK09912 has four types of reset; (1) Power on reset (POR) When Vdd rise is detected, POR circuit operates, and AK09912 is reset. (2) VID monitor When VID is turned OFF (0V), AK09912 is reset. (3) Reset pin (RSTN) AK09912 is reset by Reset pin. When Reset pin is not used, connect to VID. (4) Soft reset AK09912 is reset by setting SRST bit. When AK09912 is reset, all registers (without ASAX, ASAY and ASAZ) are initialized and AK09912 transits to Power-down mode.
[AK09912] MS1547-E-02 2014/7 - 15 - 6.3. Operation Mode AK09912 has following nine operation modes: (1) Power-down mode (2) Single measurement mode (3) Continuous measurement mode 1 (4) Continuous measurement mode 2 (5) Continuous measurement mode 3 (6) Continuous measurement mode 4 (7) External trigger measurement mode (8) Self-test mode (9) Fuse ROM access mode By setting CNTL2 register MODE[4:0] bits, the operation set for each mode is started. A transition from one mode to another is shown below. MODE[4:0]=“00001” MODE[4:0]=“00000” Transits automatically MODE[4:0]=“00010” MODE[4:0]=“00000” MODE[4:0]=“00100” MODE[4:0]=“00000” MODE[4:0]=“00110” MODE[4:0]=“00000” MODE[4:0]=“01000” MODE[4:0]=“00000” MODE[4:0]=“01010” MODE[4:0]=“00000” MODE[4:0]=“10000” MODE[4:0]=“00000” Transits automatically MODE[4:0]=“11111” MODE[4:0]=“00000” Power-down mode Continuous measurement mode 2 Sensor is measured periodically in 20Hz. Transits to Power-down mode by writing MODE[4:0]=“00000”. Self-test mode Sensor is self-tested and the result is output. Transits to Power-down mode automatically. Single measurement mode Sensor is measured for one time and data is output. Transits to Power-down mode automatically after measurement ended. External trigger measurement mode Sensor is measured for one time by external trigger. Waits for next trigger after data is output. Transits to Power-down mode by writing MODE[4:0]=“00000”. Continuous measurement mode 1 Sensor is measured periodically in 10Hz. Transits to Power-down mode by writing Continuous measurement mode 3 Sensor is measured periodically in 50Hz. Transits to Power-down mode by writing MODE[4:0]=“00000”. Continuous measurement mode 4 Sensor is measured periodically in 100Hz. Transits to Power-down mode by writing MODE[4:0]=“00000”. Fuse ROM access mode Turn on the needed to read out Fuse ROM. Transits to Power-down mode by writing MODE[4:0]=“00000”. Figure 6.1 Operation mode When power is turned ON, AK09912 is in Power-down mode. When a specified value is set to MODE[4:0], AK09912 transits to the specified mode and starts operation. When user wants to change operation mode, transit to power-down mode first and then transit to other modes. After Power-down mode is set, at least 100 µs (Twat) is needed before setting another mode.
[AK09912] MS1547-E-02 2014/7 - 17 - 6.4.3. Continuous Measurement Mode 1, 2, 3 and 4 When Continuous measurement mode 1 (MODE[4:0]=“00010”), 2 (MODE[4:0]=“00100”), 3 (MODE[4:0]=“00110”) or 4 (MODE[4:0]=“01000”) is set, magnetic sensor measurement is started periodically at 10 Hz, 20 Hz, 50 Hz or 100 Hz respectively. After magnetic sensor measurement and signal processing is finished, measurement magnetic data is stored to measurement data registers (HXL to HZH) and all circuits except for the minimum circuit required for counting cycle length are turned off (PD). When the next measurement timing comes, AK09912 wakes up automatically from PD and starts measurement again. When temperature sensor is enabled (TEM =“1”), temperature sensor measurement is started together with magnetic sensor measurement, and measurement temperature data is stored to measurement data registers (TMPS). Continuous measurement mode ends when Power-down mode (MODE[4:0]=“00000”) is set. It repeats measurement until Power-down mode is set. When Continuous measurement mode 1 (MODE[4:0]=“00010”), 2 (MODE[4:0]=“00100”), 3 (MODE[4:0]=“00110”) or 4 (MODE[4:0]=“01000”) is set again while AK09912 is already in Continuous measurement mode, a new measurement starts. ST1, ST2 and measurement data registers (HXL to TMPS) will not be initialized by this. (N-1)th Nth (N+1)th PD Measurement PD Measurement PD 10Hz,20Hz,50Hz or 100Hz Figure 6.4 Continuous measurement mode 6.4.3.1. Data Ready When measurement data is stored and ready to be read, DRDY bit in ST1 register turns to “1”. This is called “Data Ready”. DRDY pin is in the same state as DRDY bit. When measurement is performed correctly, AK09912 becomes Data Ready on transition to PD after measurement.
[AK09912] MS1547-E-02 2014/7 - 20 - 6.4.3.6. Magnetic Sensor Overflow AK09912 has the limitation for measurement range that the sum of absolute values of each axis should be smaller than 4912 µT. When the magnetic field exceeded this limitation, data stored at measurement data are not correct. This is called Magnetic Sensor Overflow. When magnetic sensor overflow occurs, HOFL bit turns to “1”. When the next measurement starts, it returns to “0”. 6.4.4. External Trigger Measurement Mode When External trigger measurement mode (MODE[4:0]=“01010”) is set, AK09912 waits for trigger input. When a pulse is input from TRG pin, magnetic sensor measurement is started on the rising edge of TRG pin. After magnetic sensor measurement and signal processing is finished, measurement magnetic data is stored to measurement data registers (HXL to HZH) and all circuits except for the minimum circuit required for trigger input waiting are turned off (PD state). When the next pulse is input, AK09912 wakes up automatically from PD and starts measurement again. When temperature sensor is enabled (TEM =“1”), temperature sensor measurement is started together with magnetic sensor measurement, and measurement temperature data is stored to measurement data registers (TMPS). When power-down mode (MODE[4:0]=“00000”) is set, External trigger measurement mode ends. AK09912 keeps waiting for the trigger input until the Power-down mode is set. When External trigger measurement mode (MODE[4:0]=“01010”) is set again while AK09912 is already in External trigger measurement mode, it starts to wait for the trigger input again. The trigger input is ignored while sensor is measuring. Data read sequence and functions of read-only registers in External trigger measurement mode are the same as Continuous measurement mode. 6.4.5. Self-test Mode Self-test mode is used to check if the magnetic sensor is working normally. When Self-test mode (MODE[4:0]=“10000”) is set, magnetic field is generated by the internal magnetic source and magnetic sensor is measured. Measurement data is stored to measurement data registers (HXL to HZH), then AK09912 transits to Power-down mode automatically.(Temperature sensor is not measured.) Data read sequence and functions of read-only registers in Self-test mode are the same as Single measurement mode. 6.4.5.1. Self-test Sequence (1) Set Power-down mode. (MODE[4:0]=“00000”) (2) Set Self-test mode. (MODE[4:0]=“10000”) (3) Check Data Ready or not by any of the following method. Polling DRDY bit of ST1 register Monitor DRDY pin When Data Ready, proceed to the next step. (4) Read measurement data (HXL to HZH) 6.4.5.2. Self-test Judgment When measurement data read by the above sequence is in the range of following table after sensitivity adjustment (refer to 8.3.13), AK09912 is working normally. Criteria -200 ≤ HX ≤ +200 -200 ≤ HY ≤ +200 -1600 ≤ HZ ≤ -400 6.4.6. Fuse ROM Access Mode Fuse ROM access mode is used to read Fuse ROM data. Sensitivity adjustment data for each axis is stored in Fuse ROM. Set Fuse ROM Access mode (MODE[4:0]=“11111”) before reading Fuse ROM data. When Fuse ROM Access mode is set, circuits required for reading Fuse ROM are turned on. However, it needs 100µs (Twatr) to read Fuse ROM after mode setting. After reading Fuse ROM data, set Power-down mode (MODE[4:0]=“00000”) before the transition to another mode.
[AK09912] MS1547-E-02 2014/7 - 21 - 6.5. Temperature Sensor In Single measurement mode, Continuous measurement mode 1, 2, 3, 4, or External trigger measurement mode is set, AK09912 can measure temperature sensor together with magnetic sensor. When temperature sensor is enabled (TEM =“1”), temperature sensor measurement is started together with magnetic sensor measurement. In Continuous measurement mode 1, 2, 3 or 4, temperature sensor measurement is started at every 8 measurements of magnetic sensor measurement. In Single measurement mode or External trigger measurement mode, temperature sensor measurement is stared at every measurement of magnetic sensor measurement. When user wants to change temperature sensor measurement enables or disables, set to Power-down mode is required before change temperature sensor measurement. Default TEM register is “disable” (TEM=“0”). 6.6. Noise Suppression Filter (NSF) In Single measurement mode, Continuous measurement mode 1, 2, 3, 4 or External trigger measurement mode, output from the magnetic sensor can be filtered to suppress the noise. This filter name is Noise Suppression Filter (NSF). There are three optional filter extents. When NSF[1:0]= “00”, NSF is “disable” and output magnetic data is not filtered. When NSF[1:0]= “01”, NSF extent is “Low” and output magnetic data is filtered mildly. When NSF[1:0]= “10”, NSF extent is “Middle” and output magnetic data is filtered moderately. When NSF[1:0]= “11”, NSF extent is “High” and output magnetic data is filtered strongly. NSF register can be changed in Power-down mode only. Default NSF register is “disable” (NSF[1:0]= “00”).
[AK09912] MS1547-E-02 2014/7 - 22 - 7. Serial Interface AK09912 supports I2C bus interface and 4-wire SPI. A selection is made by CSB pin. When used as 3-wire SPI, set SI pin and SO pin wired-OR externally. CSB pin=“L”: 4-wire SPI CSB pin=“H”: I2C bus interface 7.1. 4-wire SPI The 4-wire SPI consists of four digital signal lines: SK, SI, SO, and CSB, and is provided in 16bit protocol. Data consists of Read/Write control bit (R/W), register address (7-bit) and control data (8-bit). To read out all axes measurement data (X, Y, Z), an option to read out more than one byte data using automatic increment command is available. (Sequential read operation) CSB pin is low active. Input data is taken in on the rising edge of SK pin, and output data is changed on the falling edge of SK pin. (SPI-mode3) Communication starts when CSB pin transits to “L” and stops when CSB pin transits to “H”. SK pin must be “H” during CSB pin is in transition. Also, it is prohibited to change SI pin during CSB pin is “H” and SK pin is “H”. 7.1.1. Writing Data Input 16 bits data on SI pin in synchronous with the 16-bit serial clock input on SK pin. Out of 16 bits input data, the first 8 bits specify the R/W control bit (R/W=“0” when writing) and register address (7-bit), and the latter 8 bits are control data (8-bit). When any of addresses listed on Table 8.1 is input, AK09912 recognizes that it is selected and takes in latter 8 bits as setting data. If the number of clock pulses is less than 16, no data is written. If the number of clock pulses is more than 16, data after the 16th clock pulse on SI pin are ignored. It is not compliant with serial write operation for multiple addresses. CSB SK SI (INPUT) RW SO (OUTPUT) Hi-Z A5 A4 A3 A2 A1 A0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 D7 D6 D5 D4 D3 D2 D1 D0 Figure 7.1 4-wite SPI Writing Data
[AK09912] MS1547-E-02 2014/7 - 23 - 7.1.2. Reading Data Input the R/W control bit (R/W=“1”) and 7-bit register address on SI pin in synchronous with the first 8 bits of the 16 bits of a serial clock input on SK pin. Then AK09912 outputs the data held in the specified register with MSB first from SO pin. When clocks are input continuously after one byte of data is read, the address is incremented and data in the next address is output. Accordingly, after the falling edge of the 15th clock and CSB pin is “L”, the data in the next address is output on SO pin. When CSB pin is driven “L” to “H”, SO pin is placed in the high-impedance state. AK09912 has two incrimination lines; 00H to 18H and 30H to 32H. For example, data is read as follows: 00H 01H 33H to 35H and 37H are reserved addresses. Do not access to those addresses. When specified address is other than 00H to 18H, 30H to 37H and 60H to 62H, AK09912 recognizes that it is not selected and keeps SO pin in high-impedance state. Therefore, user can use other addresses for other devices. CSB SK SI (INPUT) RW SO (OUTPUT) Hi-Z A5 A4 A3 A2 A1 A0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 D7 D6 D5 D4 D3 D2 D1 D0 Hi-Z Figure 7.2 4-wire SPI Reading Data
[AK09912] MS1547-E-02 2014/7 - 29 - 8. Registers 8.1. Description of Registers AK09912 has registers of 24 addresses as indicated in Table 8.1. Every address consists of 8 bits data. Data is transferred to or received from the external CPU via the serial interface described previously. Table 8.1 Register Table Name Address READ/ WRITE Description Bit width Remarks WIA１ 00H READ Company ID 8 WIA2 01H READ Device ID 8 RSV1 02H READ Reserved 1 8 RSV2 03H READ Reserved 2 8 ST1 10H READ Status 1 8 Data status HXL 11H READ Measurement Magnetic Data
8 X-axis data
HYL 13H READ 8 Y-axis data HYH 14H READ 8 HZL 15H READ 8 Z-axis data HZH 16H READ 8 TMPS 17H READ Measurement Temperature Data 8 Temperature data ST2 18H READ Status 2 8 Data status CNTL1 30H READ/ WRITE Control 1 8 Control settings CNTL2 31H READ/ WRITE Control 2 8 Control settings CNTL3 32H READ/ WRITE Control 3 8 Control settings TS1 33H READ/ WRITE Test 8 DO NOT ACCESS TS2 34H READ/ WRITE Test 8 DO NOT ACCESS TS3 35H READ/ WRITE Test 8 DO NOT ACCESS I2CDIS 36H READ/ WRITE I2C disable 8 TS4 37H READ/ WRITE Test 8 DO NOT ACCESS ASAX 60H READ X-axis sensitivity adjustment value 8 Fuse ROM ASAY 61H READ Y-axis sensitivity adjustment value 8 Fuse ROM ASAZ 62H READ Z-axis sensitivity adjustment value 8 Fuse ROM Addresses 00H to 18H, 30H to 32H and 60H to 62H are compliant with automatic increment function of serial interface respectively. Values of addresses 60H to 62H can be read only in Fuse ROM access mode. In other modes, read data is not correct. When the address is in 00H to 18H, the address is incremented 00H 01H 02H 03H 10H 11H ... 18H, and the address goes back to 00H after 18H. When the address is in 30H to 32H, the address goes back to 30H after 32H. When the address is in 60H to 62H, the address goes back to 60H after 62H.
[AK09912] MS1547-E-02 2014/7 - 30 - 8.2. Register Map Table 8.2 Register Map Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read-only register 00H WIA1 0 1 0 0 1 0 0 0 01H WIA2 0 0 0 0 0 1 0 0 02H RSV1 RSV17 RSV16 RSV15 RSV14 RSV13 RSV12 RSV11 RSV10 03H RSV2 RSV27 RSV26 RSV25 RSV24 RSV23 RSV22 RSV21 RSV20 10H ST1 HSM 0 0 0 0 0 DOR DRDY 11H HXL HX7 HX6 HX5 HX4 HX3 HX2 HX1 HX0 12H HXH HX15 HX14 HX13 HX12 HX11 HX10 HX9 HX8 13H HYL HY7 HY6 HY5 HY4 HY3 HY2 HY1 HY0 14H HYH HY15 HY14 HY13 HY12 HY11 HY10 HY9 HY8 15H HZL HZ7 HZ6 HZ5 HZ4 HZ3 HZ2 HZ1 HZ0 16H HZH HZ15 HZ14 HZ13 HZ12 HZ11 HZ10 HZ9 HZ8 17H TMPS TMPS7 TMPS6 TMPS5 TMPS4 TMPS3 TMPS2 TMPS1 TMPS0 18H ST2 0 0 0 0 HOFL 0 0 0 Read/Write register 30H CNTL1 TEM NSF1 NSF0 0 0 0 0 0 31H CNTL2 0 0 0 MODE4 MODE3 MODE2 MODE1 MODE0 32H CNTL3 0 0 0 0 0 0 0 SRST 36H I2CDIS I2CDIS7 I2CDIS6 I2CDIS5 I2CDIS4 I2CDIS3 I2CDIS2 I2CDIS1 I2CDIS0 Read-only register 60H ASAX COEFX7 COEFX6 COEFX5 COEFX4 COEFX3 COEFX2 COEFX1 COEFX0 61H ASAY COEFY7 COEFY6 COEFY5 COEFY4 COEFY3 COEFY2 COEFY1 COEFY0 62H ASAZ COEFZ7 COEFZ6 COEFZ5 COEFZ4 COEFZ3 COEFZ2 COEFZ1 COEFZ0 When VDD is turned ON, POR function works and all registers of AK09912 are initialized regardless of VID status. To write data to or to read data from register, VID must be ON. TS1, TS2, TS3 and TS4 are test registers for shipment test. Do not use these registers.
[AK09912] MS1547-E-02 2014/7 - 31 - 8.3. Detailed of Description of Register 8.3.1. WIA: Who I Am Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read-only register 00H WIA1 0 1 0 0 1 0 0 0 01H WIA2 0 0 0 0 0 1 0 0 WIA1[7:0]: Company ID of AKM. It is described in one byte and fixed value. 48H: fixed WIA2[7:0]: Device ID of AK09912. It is described in one byte and fixed value. 04H: fixed 8.3.2. RSV: Reserved Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read-only register 02H RSV1 RSV17 RSV16 RSV15 RSV14 RSV13 RSV12 RSV11 RSV10 03H RSV2 RSV27 RSV26 RSV25 RSV24 RSV23 RSV22 RSV21 RSV20 RSV1[7:0]/RSV2[7:0]: Device information of AKM. 8.3.3. ST1: Status 1 Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read-only register 10H ST1 HSM 0 0 0 0 0 DOR DRDY Reset 0 0 0 0 0 0 0 0 DRDY: Data Ready “0“: Normal “1“: Data is ready DRDY bit turns to “1” when data is ready in Single measurement mode, Continuous measurement mode 1, 2, 3, 4 , External trigger measurement mode or Self-test mode. It returns to “0” when any one of ST2 register or measurement data register (HXL to TMPS) is read. DOR: Data Overrun “0”: Normal “1”: Data overrun DOR bit turns to “1” when data has been skipped in Continuous measurement mode 1,2,3,4 or External trigger measurement mode. It returns to “0” when any one of ST2 register or measurement data register (HXL to TMPS) is read. HSM: I2C Hs-mode “0”: Standard/Fast mode “1”: Hs-mode HSM bit turns to “1” when I2C bus interface is changed from Standard or Fast mode to High-speed mode (Hs-mode).
[AK09912] MS1547-E-02 2014/7 - 32 - 8.3.4. HXL to HZH: Measurement Data Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read-only register 11H HXL HX7 HX6 HX5 HX4 HX3 HX2 HX1 HX0 12H HXH HX15 HX14 HX13 HX12 HX11 HX10 HX9 HX8 13H HYL HY7 HY6 HY5 HY4 HY3 HY2 HY1 HY0 14H HYH HY15 HY14 HY13 HY12 HY11 HY10 HY9 HY8 15H HZL HZ7 HZ6 HZ5 HZ4 HZ3 HZ2 HZ1 HZ0 16H HZH HZ15 HZ14 HZ13 HZ12 HZ11 HZ10 HZ9 HZ8 Reset 0 0 0 0 0 0 0 0 Measurement data of magnetic sensor X-axis/Y-axis/Z-axis HXL[7:0]: X-axis measurement data lower 8-bit HXH[15:8]: X-axis measurement data higher 8-bit HYL[7:0]: Y-axis measurement data lower 8-bit HYH[15:8]: Y-axis measurement data higher 8-bit HZL[7:0]: Z-axis measurement data lower 8-bit HZH[15:8]: Z-axis measurement data higher 8-bit Measurement data is stored in two’s complement and Little Endian format. Measurement range of each axis is -32752 to 32752 in 16-bit output. Table 8.3 Measurement magnetic data format Measurement data (each axis) [15:0] Magnetic flux density [µＴ] Two’s complement Hex Decimal 0111 1111 1111 0000 7FF0 32752 4912(max.) | | | | 0000 0000 0000 0001 0001 1 0.15 0000 0000 0000 0000 0000 0 0 1111 1111 1111 1111 FFFF -1 -0.15 | | | | 1000 0000 0000 1000 8010 -32752 -4912(min.)
[AK09912] MS1547-E-02 2014/7 - 33 - 8.3.5. TMPS: Temperature Data Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read-only register 17H TMPS TMPS7 TMPS6 TMPS5 TMPS4 TMPS3 TMPS2 TMPS1 TMPS0 Reset 0 0 0 0 0 0 0 0 TMPS[7:0]: Measurement data of temperature sensor Temperature [˚C] = 35 + (120 – TMPS code ) / 1.6 [decimal value] Temperature measuring range: -49.4˚C (max code) to +110.0˚C (minimum code) -49.4 ˚C or less : TMPS code = FF [hex value] +110.0 ˚C or more : TMPS code = 00 [hex value] Table 8.4 Measurement temperature data format Measurement data [7:0] Hex Temperature [˚C] FF -49.4 | | 81 29.4 80 30.0 7F 30.6 | | 00 110.0 8.3.6. ST2: Status 2 Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read-only register 18H ST2 0 0 0 0 HOFL 0 0 0 Reset 0 0 0 0 0 0 0 0 HOFL: Magnetic sensor overflow “0”: Normal “1”: Magnetic sensor overflow occurred In Single measurement mode, Continuous measurement mode 1, 2, 3, 4, External trigger measurement mode and Self-test mode, magnetic sensor may overflow even though measurement data register is not saturated. In this case, measurement information. ST2 register has a role as data reading end register, also. When any of measurement data register (HXL to TMPS) is read in Continuous measurement mode 1, 2, 3, 4 or External trigger measurement mode, it means data reading start and taken as data reading until ST2 register is read. Therefore, when any of measurement data is read, be sure to read ST2 register at the end.
[AK09912] MS1547-E-02 2014/7 - 34 - 8.3.7. CNTL1: Control 1 Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read/Write register 30H CNTL1 TEM NSF1 NSF0 0 0 0 0 0 Reset 0 0 0 0 0 0 0 0 TEM: Temperature measurement setting “0”: disable “1”: enable When TEM bit is “1”, temperature sensor measurement is enabled. Temperature sensor is measured together with magnetic sensor. Refer to 6.5 for detailed information. NSF[1:0]: Noise suppression filter setting “00”: disable “01”: Low “10”: Middle “11”: High Output data from magnetic sensor is filtered to suppress the noise according to the setting. Refer to 6.6 for detailed information. 8.3.8. CNTL2: Control 2 Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read/Write register 31H CNTL2 0 0 0 MODE4 MODE3 MODE2 MODE1 MODE0 Reset 0 0 0 0 0 0 0 0 MODE[4:0]: Operation mode setting “00000”: Power-down mode “00001”: Single measurement mode “00010”: Continuous measurement mode 1 “00100”: Continuous measurement mode 2 “00110”: Continuous measurement mode 3 “01000”: Continuous measurement mode 4 “01010”: External trigger measurement mode “10000”: Self-test mode “11111”: Fuse ROM access mode Other code settings are prohibited. When each mode is set, AK09912 transits to the set mode. Refer to 6.3 for detailed information.
[AK09912] MS1547-E-02 2014/7 - 35 - 8.3.9. CNTL3: Control 3 Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read/Write register 32H CNTL3 0 0 0 0 0 0 0 SRST Reset 0 0 0 0 0 0 0 0 SRST: Soft reset “0”: Normal “1”: Reset When “1” is set, all registers (without ASAX, ASAY and ASAZ) are initialized. After reset, SRST bit turns to “0” automatically. 8.3.10. TS1, TS2, TS3: Test Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read/Write register Reset 0 0 0 0 0 0 0 0 TS1, TS2 and TS3 registers are AKM internal test registers. Do not use these registers.
[AK09912] MS1547-E-02 2014/7 - 36 - 8.3.11. I2CDIS: I2C Disable Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read/Write register 36H I2CDIS I2CDIS7 I2CDIS7 I2CDIS7 I2CDIS7 I2CDIS7 I2CDIS7 I2CDIS7 I2CDIS0 Reset 0 0 0 0 0 0 0 0 This register disables I2C bus interface. I2C bus interface is enabled in default. To disable I2C bus interface, write “00011011” to I2CDIS register. Then I2C bus interface is disabled. Once I2C bus interface is disabled, it is impossible to write other value to I2CDIS register. To enable I2C bus interface, reset AK09912 or input start condition 8 times continuously. 8.3.12. TS4: Test 4 Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read/Write register Reset 0 1 1 0 1 0 0 1 TS4 registers are test registers for shipment test. Do not use this registers. 8.3.13. ASAX, ASAY, ASAZ: Sensitivity Adjustment Values Addr. Register name D7 D6 D5 D4 D3 D2 D1 D0 Read-only register 60H ASAX COEFX7 COEFX6 COEFX5 COEFX4 COEFX3 COEFX2 COEFX1 COEFX0 61H ASAY COEFY7 COEFY6 COEFY5 COEFY4 COEFY3 COEFY2 COEFY1 COEFY0 62H ASAZ COEFZ7 COEFZ6 COEFZ5 COEFZ4 COEFZ3 COEFZ2 COEFZ1 COEFZ0 Sensitivity adjustment data for each axis is stored to Fuse ROM on shipment. ASAX[7:0]: Magnetic sensor X-axis sensitivity adjustment value ASAY[7:0]: Magnetic sensor Y-axis sensitivity adjustment value ASAZ[7:0]: Magnetic sensor Z-axis sensitivity adjustment value How to adjust sensitivity The sensitivity adjustment is done by the equation below, where H is the measurement data read out from the measurement data register, ASA is the sensitivity adjustment value and Hadj is the adjusted measurement data. 5.0128ASAHHadj
[AK09912] MS1547-E-02 2014/7 - 37 - 9. Example of Recommended External Connection 9.1. I2C Bus Interface Pins of dot circle should be kept non-connected. AK09912C (Top view) Interrupt Host CPU I2C I/F Power for I/F VID POWER 1.65V to Vdd VDD POWER 1.7V to 3.6V 0.1µF 0.1µF TST2 RSTN VID SO SDA /SI TRG TST2 SCL /SK CSB TST1 CAD0 CAD1 VSS VDD DRDY Slave address select CAD1 CAD0 address VSS VSS 0 0 0 1 1 0 0 R/W VSS VDD 0 0 0 1 1 0 1 R/W VDD VSS 0 0 0 1 1 1 0 R/W VDD VDD 0 0 0 1 1 1 1 R/W GPIO 4 3 2 1 D C B A
[AK09912] MS1547-E-02 2014/7 - 38 - 9.2. 4-wire SPI Pins of dot circle should be kept non-connected. AK09912C (Top view) Interrupt Host CPU SPI I/F Power for I/F VID POWER 1.65V to Vdd VDD POWER 1.7V to 3.6V 0.1µF 0.1µF TST2 RSTN VID SO SDA /SI TRG TST2 SCL /SK CSB TST1 CAD0 CAD1 VSS VDD DRDY GPIO 4 3 2 1 D C B A
[AK09912] MS1547-E-02 2014/7 - 39 - 10. Package 10.1. Marking Product name: 09912 Date code: X1X2X3X4X5 X1 = ID X2 = Year code X3X4 = Week code X5 = Lot 10.2. Pin Assignment 4 3 2 1 D RSTN CAD1 CAD0 C VID TRG TST1 VSS B SO TST2 VDD A SDA/SI SCL/SK CSB DRDY <Top view> 09912 X1X2X3X4X5 <Top view>
[AK09912] MS1547-E-02 2014/7 - 40 - 10.3. Outline Dimensions 10.4. Recommended Foot Print Pattern <Top view> 0.05 C 0.57 max. C 0.40 0.13 0.4 1.2 1.2 0.4 0.240.03 4 3 2 1 1.590.03 D 1.590.03 C B A 1 2 3 4 <Top view> <Bottom view> <Side view> 0.4 0.23 a 0.4
[AK09912] MS1547-E-02 2014/7 - 41 - 11. Relationship between the Magnetic Field and Output Code The measurement data increases as the magnetic flux density increases in the arrow directions.
[AK09912] MS1547-E-02 2014/7 - 42 - Important Notice 0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. All information included in this document are provided only to illustrate the operation and application examples of AKM Products. AKM neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of AKM or any third party with respect to the information in this document. You are fully responsible for use of such information contained in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS. 2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact, including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. Do not use Product for the above use unless specifically agreed by AKM in writing. 3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible for complying with safety standards and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. 4. Do not use or otherwise make available the Product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). When exporting the Products or related technology or any information contained in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations. The Products and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 5. Please contact AKM sales representative for details as to environmental matters such as the RoHS compatibility of the Product. Please use the Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. Resale of the Product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by AKM for the Product and shall not create or extend in any manner whatsoever, any liability of AKM. 7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of AKM.