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Document overview
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Technical content
Features
Small form factor QFN package VDDIO range: 1.65 – 3.3V 16-bits motion data registers Maximum speed motion detection of 200ips and acceleration up to 50g Variable Frame Rate for optimum power performance Motion detect pin output Internal oscillator – no external clock input needed Enhanced Programmability Frame rate up to 12500fps Lift Detection Default lift cut-off height – typical 3mm from tracking surface Manually calibrated lift cut-off height – optimized for individual surface Resolution up to 6400cpi with step of ~50cpi X and Y axis independent resolution setting Register enabled Rest Modes Angle Snap and Angle Tunabilty
Applications
Corded and cordless gaming mice Motion input devices
All rights rights strictly reserved, any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. PixArt Imaging Inc. Confidential 2 Device Pinout Pin No Pin Name Input / Output/ Power
Description
1 – 3 NC -
4 PWR_OPT2 IN Refer Table 1
5 PWR_OPT1 IN Refer Table 1
6 XYLED IN LED Illumination Control
7 VDDIO PWR IO Voltage
8 MOTION OUT Motion Detect (Active Low
Output)
9 MOSI IN Serial Data Input (Master
Out/Slave In)
10 SCLK IN Serial Clock Input
11 MISO OUT Serial Data Output
(Master In/Slave Out)
12 GND PWR Ground
13 NCS IN Chip Select (Active Low
Input) 14 – 33 NC - - 34, 45 VDD3/REFB PWR Refer Table 1 35 – 38 NC - -
39 GND PWR Ground
40 DGND PWR Ground (digital)
41 – 42 REFA/VDD1_8 PWR Refer Table 1 43 – 44 NC - -
46 VDD5/VDD3 PWR Refer Table 1
47 – 52 NC - -
53 GND PWR Ground
54 – 58 NC - - Figure 1. Device Pinout of SDNS-3988
- Refer to schematic for bypass capacitors value.
All rights rights strictly reserved, any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. Figure 2. Package Outline Drawing
All rights rights strictly reserved, any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. Figure 13. Schematic Diagram for 5-Button Scroll Wheel Corded Mouse (PCB Board 1)
2 J11
2 J12
All rights rights strictly reserved, any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. Figure 14. Schematic Diagram for 5-Button Scroll Wheel Corded Mouse (PCB Board 2 & 3)
All rights rights strictly reserved, any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. PixArt Imaging Inc. Confidential 7 Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units Notes Storage Temperature TS -40 85 ºC MSL level1 Lead-Free Solder Temp 260 ºC MSL level1. Refer to soldering reflow profile in Figure 7 Supply Voltage VDD3 -0.5 3.4 V VDD1_8 -0.5 2.1 V VDDIO -0.5 3.4 V ESD (Human body model) 2 kV All Pins Input Voltage VIN -0.5 3.4 V All I/O Pins Comments: 1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are the stress ratings only and functional operation of the device at these or any other condition beyond those indicated for extended period of time may affect device reliability. 2. The inherent design of this component causes it to be sensitive to electrostatic discharge. The ESD threshold is listed above. To prevent ESD- induced damage, take adequate ESD precautions when handling this product Recommended Operating Conditions Parameter Symbol Minimum Typical Maximum Units Notes Operating Temperature TA 0 40 C Power supply voltage VDD1_8 1.7 1.8 2.0 Volts Including noise. VDD3 2.7 2.8 3.3 Volts Including noise. VDD5 4.0 5.0 5.25 Volts Including noise. VDD-LED 2.7 2.8 3.3 Volts Including noise. VDDIO 1.65 3.3 Volts Including noise. Power supply rise time VRT1_8 1 100 ms 0 to 1.8V VRT3 1 100 ms 0 to 2.8V Supply noise (Sinusoidal) VNA 100 mVp-p 10kHz-50MHz Serial Port Clock Frequency fSCLK 2 MHz Active drive, 50% duty cycle Distance from lens reference plane to surface (Z) Z 2.7 2.9 3.1 mm Results in +/- 0.2 mm minimum DOF. See Figure 5 Speed S 200 ips Lift Cuttoff (Manual Calibration) Lc 1 2.0 mm Lift Cuttoff (Default) Lwc 3 mm Acceleration A 50 g In Run Mode only (machine tested upto 30g) Load Capacitance Cout 100 pF MOTION, MISO
All rights rights strictly reserved, any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. PixArt Imaging Inc. Confidential 8 Parameter Symbol Minimum Typical Maximum Units Notes DC Supply Current IDD_RUN3k 14 mA Average current, including 10mA LED current. No load on MISO, MOTION. RUN3k = run mode at 3000fps RUN7k = run mode at 7000fps RUN12k = run mode at 12500fps IDD_RUN7k 26 mA IDD_RUN12k 38 mA IDD_REST1 0.30 mA IDD_REST2 0.15 mA IDD_REST3 0.08 mA Peak Supply Current IDDPP 65 mA Shutdown Supply Current IDDSTDWN 65 μA NCS, SCLK, MOSI = VDDIO MISO = GND Input Low Voltage VIL 0.3 * VDDIO V SCLK, MOSI, NCS Input High Voltage VIH 0.7 * VDDIO V SCLK, MOSI, NCS Input Hysteresis VI_HYS 100 mV SCLK, MOSI, NCS Input Leakage Current Ileak 1 10 A Vin = 0.7*VDDIO , SCLK, MOSI, NCS Output Low Voltage, MISO, MOTION VOL 0.3 * VDDIO V Iout = 1mA, MISO, MOTION Output High Voltage, MISO, MOTION VOH 0.7 * VDDIO V Iout = -1mA, MISO, MOTION Input Capacitance Cin 10 pF MOSI, NCS, SCLK
All rights rights strictly reserved, any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. PixArt Imaging Inc. Confidential 9 Registers The SDNS-3988 registers are accessible via the serial port. The registers are used to read motion data and status as well as to set the device configuration. Address Register Read/Write Default Value 0x00 Product_ID R 0x3d 0x01 Revision_ID R 0x01 0x02 Motion R 0x20 0x03 Delta_X_L R 0x00 0x04 Delta_X_H R 0x00 0x05 Delta_Y_L R 0x00 0x06 Delta_Y_H R 0x00 0x07 SQUAL R 0x00 0x08 Pixel_Sum R 0x00 0x09 Maximum_Pixel R 0x00 0x0a Minimum_Pixel R 0x00 0x0b Shutter_Lower R 0x7a 0x0c Shutter_Upper R 0x31 0x0d Frame_Period_Lower R 0x1a 0x0e Frame_Period_Upper R 0x41 0x0f Configuration_I R/W 0x24 0x10 Configuration_II R/W 0x00 0x11 Configuration_III R/W 0x00 0x12 Frame_Capture R/W 0x00 0x13 SROM_Enable W 0x00 0x14 Run_Downshift R/W 0x32 0x15 Rest1_Rate R/W 0x01 0x16 Rest1_Downshift R/W 0x1f 0x17 Rest2_Rate R/W 0x09 0x18 Rest2_Downshift R/W 0xbc 0x19 Rest3_Rate R/W 0x31 0x1a Frame_Period_Max_Bound_Lower R/W 0x1a 0x1b Frame_Period_Max_Bound_Upper R/W 0x41 0x1c Frame_Period_Min_Bound_Lower R/W 0xa0 0x1d Frame_Period_Min_Bound_Upper R/W 0x0f 0x1e Shutter_Max_Bound_Lower R 0x7a 0x1f Shutter_Max_Bound_Upper R 0x31 0x24 Observation R/W 0x00 0x25 Data_Out_Lower R Undefined 0x26 Data_Out_Upper R Undefined 0x27-0x29 Reserved 0x2a SROM_ID R 0x00 0x2b-0x2e Reserved 0x2f Configuration_V R/W 0x00
All rights rights strictly reserved, any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission. PixArt Imaging Inc. Confidential 10 Address Register Read/Write Default Value 0x30-0x38 Reserved 0x39 Configuration_IV R/W 0x00 0x3a Power_Up_Reset W NA 0x3b Shutdown W NA 0x3c-0x3e Reserved 0x3f Inverse_Product_ID R 0xc2 0x40-0x41 Reserved 0x42 Snap_Angle R/W 0x06 0x43-0x46 Reserved 0x47 Sensor_Mode R/W 0x01 0x48-0x4f Reserved 0x50 Motion_Burst R 0x00 0x51-0x63 Reserved 0x54 Filter_Configuration R/W 0x80 0x55-0x58 Reserved 0x59 VFR_Shutter_Max_Bound_Lower W NA 0x5a VFR_Shutter_Max_Bound_Upper W NA 0x5b Reserved 0x5c ManCal_Configuration R/W 0x00 0x5d ManCal_Min_Squal R NA 0x5e ManCal_Max_Shutter_Lower R NA 0x5f ManCal_ Max_Shutter_Upper R NA 0x60-0x61 Reserved 0x62 SROM_Load_Burst W NA 0x63 Reserved 0x64 Pixel_Burst R 0x00