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Support for 1/4 duty 1/2 bias or 1/4 duty 1/3 bias drive of up to 64 segments under serial data control. Serial data input supports CCB* format communication with the system controller. Serial data control of the power-saving mode based backup function and all the segments forced off function Serial data control of switching between the segment output port and the general-purpose output port functions High generality, since display data is displayed directly without decoder intervention. Independent V LCD for the LCD driver block (V LCD can be set to any voltage in the range 2.7 to 6.0 volts, regardless of the logic block power- supply voltage.) The INH pin can force the display to the off state. RC oscillator circuit SSOP30 (275mil)
www.onsemi.com Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recomme nded Operating Ranges limits may affect device reliability. Pin Assignment DIP1/S1 CLP2/S2 CEP3/S3 P4/S4 OSCS5 VSSS6 VLCD2S7 VLCD1S8 VLCDS9 VDDS10 COM4S11 COM3S12 COM2S13 COM1S14 S16S15 LC75814V INH Specifications Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V Parameter Symbol Conditions Ratings Unit Maximum supply voltage VDD max V DD –0.3 to +7.0 V VLCD max V LCD –0.3 to +7.0 V VIN 1 CE, CL, DI, INH –0.3 to +7.0 V Input voltage VIN 2 OSC –0.3 to VDD + 0.3 V VIN 3V LCD 1, VLCD 2 –0.3 to VLCD + 0.3 V Output voltage VOUT 1 OSC –0.3 to VDD + 0.3 V VOUT 2 S1 to S16, COM1 to COM4, P1 to P4 –0.3 to VLCD + 0.3 V IOUT 1 S1 to S16 300 μA Output current IOUT 2 COM1 to COM4 3 mA IOUT 3 P1 to P4 5 mA Allowable power dissipation Pd max Ta = 85°C 100 mW Operating temperature Topr –40 to +85 °C Storage temperature Tstg –55 to +125 °C Allowable Operating Ranges at Ta = –40 to +85°C, VSS = 0 V Parameter Symbol Conditions Ratings Unitmin typ max Supply voltage VDD VDD 2.7 6.0 V VLCD VLCD 2.7 6.0 V Input voltage VLCD1V LCD1 2/3 VLCD VLCD V VLCD2V LCD2 1/3 VLCD VLCD V Input high level voltage V IH CE, CL, DI, INH 0.8 VDD 6.0 V Input low level voltage V IL CE, CL, DI, INH 0 0.2 VDD V Recommended external resistance R OSC OSC 43 k Recommended external capacitance C OSC OSC 680 pF Guaranteed oscillation range fOSC OSC 25 50 100 kHz Data setup time tds CL, DI: Figure 2 160 ns Data hold time tdh CL, DI: Figure 2 160 ns CE wait time tcp CE, CL: Figure 2 160 ns CE setup time tcs CE, CL: Figure 2 160 ns CE hold time tch CE, CL: Figure 2 160 ns High level clock pulse width tøH CL: Figure 2 160 ns Low level clock pulse width tøL CL: Figure 2 160 ns Rise time tr CE, CL, DI: Figure 2 160 ns Fall time tf CE, CL, DI: Figure 2 160 ns INH switching time tc INH, CE: Figure 3 10 μs Top view
www.onsemi.com Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product per formance may not be indicated by the Electrical Characteristics if operated under different conditions. Parameter Symbol Conditions Ratings Unitmin typ max Hysteresis V H CE, CL, DI, INH 0.1 VDD V Input high level current I IH CE, CL, DI, INH; VI = 6.0 V 5.0 μA Input low level current IIL CE, CL, DI, INH; VI = 0 V –5.0 μA VOH 1 S1 to S16; I O = –20 μAV LCD – 0.9 V Output high level voltage VOH 2 COM1 to COM4; I O = –100 μAV LCD – 0.9 V VOH 3 P1 to P4; I O = –1 mA VLCD – 0.9 V VOL 1 S1 to S16; I O = 20 μA 0.9 V Output low level voltage V OL 2 COM1 to COM4; I O = 100 μA 0.9 V VOL 3 P1 to P4; I O = 1 mA 0.9 V VMID 1 COM1 to COM4; 1/2 bias, 1/2 VLCD – 0.9 1/2 VLCD + 0.9 VIO = ±100 μA VMID 2 S1 to S16; 1/3 bias, 2/3 VLCD – 0.9 2/3 VLCD + 0.9 VIO =± 2 0μA Output middle level voltage*1 VMID 3 S1 to S16; 1/3 bias, 1/3 VLCD – 0.9 1/3 VLCD + 0.9 VIO =± 2 0μA VMID 4 COM1 to COM4; 1/3 bias, 2/3 VLCD – 0.9 2/3 VLCD + 0.9 VIO = ±100 μA VMID 5 COM1 to COM4; 1/3 bias, 1/3 VLCD – 0.9 1/3 VLCD + 0.9 VIO = ±100 μA Oscillator frequency f OSC OSC; ROSC = 43 k, COSC = 680 pF 40 50 60 kHz IDD 1V DD; power saving mode 5 μA IDD 2V DD; VDD = 6.0 V, output open, fosc = 50 kHz 230 460 μA ILCD 1V LCD; power saving mode 5 μA Current drain ILCD 2 VLCD; VLCD = 6.0 V, output open 100 200 μA1/2 bias, fosc = 50 kHz ILCD 3 VLCD; VLCD = 6.0 V, output open 60 120 μA1/3 bias, fosc = 50 kHz Electrical Characteristics for the Allowable Operating Ranges Note: *1 Excluding the bias voltage generation divider resistors built in the VLCD1 and VLCD2. (See Figure 1.) VLCD VLCD1 VLCD2 To the common segments drivers Except these resistors VSS Figure 1
tøL tøH tds tcp tcs tch tdh tr 50% CE CL DI 2. When CL is stopped at the high level VDD VLCD OSC VLCD 1 VLCD 2 VSS DI S16 S15 S4 / P4 S3 / P3 S2 / P2 S1 / P1 COM4 COM3 COM2 COM1 CL CE ADDRESS DETECTOR SEGMENT DRIVER & LATCH SHIFT REGISTER COMMON DRIVER CLOCK GENERATOR INH VIH VIL VIH VIL VIH VIL tr tøH tøL tds tcp tcs tch tdh tf 50% CE CL DI 1. When CL is stopped at the low level
CE: Chip enable CL: Synchronization clock DI: Transfer data H S1/P1 to S4/P4 S5 to S16 Pin 1 to 4 5 to 16 — O Open Segment outputs for displaying the display data transferred by serial data input. The pins S1/P1 to S4/P4 can be used as general-purpose output ports when so set up by the control data. COM1 COM2 COM3 COM4 17 to 20 — O OpenCommon driver outputs. The frame frequency fO is given by: fO = (fOSC /512) Hz. OSC 26 CE CL DI Serial data transfer inputs. These pins are connected to the control microprocessor. — I/O VDD I GND Oscillator connection An oscillator circuit is formed by connecting an external resistor and capacitor to this pin. V LCD 1 23 — I OpenUsed to apply the LCD drive 2/3 bias voltage externally. This pin must be connected to V LCD 2 when 1/2 bias drive is used. VLCD 2 24 — I OpenUsed to apply the LCD drive 1/3 bias voltage externally. This pin must be connected to V LCD 1 when 1/2 bias drive is used. VDD 21 — — —Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V. VLCD 22 — — —LCD driver block power supply. Provide a voltage in the range 2.7 to 6.0 V. VSS 25 — — —Ground pin. Connect to ground. INH 27 L I GND Display off control input
- INH = low (VSS ): Off S1/P1 to S4/P4 = Low (These pins are forcibly set to the segment output port function and fixed at the V SS level.) S5 to S16 = Low (VSS ), COM1 to COM4 = Low (VSS )
- INH = high (VDD ): On Note that serial data transfers can be performed when the display is forced off by this pin. Active I/O Handling when unusedFunctionPin No. Serial Data Transfer Format 1. When CL is stopped at the low level Note: DD ... Direction data CL CE DI 1 D1 D2 D3 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 0 P0 P1 P2 DR SC BU 0 CCB address 8 bits Display data 32 bits Control data 7 bits DD 1 bit D33 D34 D35 D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 0 0 0 0 0 0 0 1 CCB address 8 bits Display data 32 bits Fixed data 7 bits DD 1 bit
- When CL is stopped at the high level Note: DD ... Direction data CL CE DI 1
0 D2 D3 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 0 P0 P1 P2 DR SC BU 0
D33 D34 D35 D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 0 0 0 0 0 0 0 1 CCB address 8 bits Display data 32 bits Fixed data 7 bits DD 1 bit Serial Data Transfer Examples
- When 33 or more segments are used, all 80 bits of the serial data must be sent.
- When fewer than 33 segments are used, only 40 bits of serial data need to be sent. However, the display data D1 to D32 and the control data must be sent.
0 D1 D2 D21 D22 D23 D24 D25 D26 D27 D28
D29 D30 D31 D32 0 P0 P1 P2 DR SC BU 0D3
0 D33 D34 D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 0 0 0 0 0 0 0 1D35
D29 D30 D31 D32 0 P0 P1 P2 DR SC BU 0D3 Note: When fewer than 33 segments are used, transfers such as that shown in the figure below cannot be used. 40 bits8 bits
- P0 to P2: Segment output port/general-purpose output port switching control data. These control data bits switch the S1/P1 to S4/P4 output pins between their segment output port and general-purpose output port functions. Note: Sn (n = 1 to 4): Segment output ports Pn (n = 1 to 4): General-purpose output ports Also note that when the general-purpose output port function is selected, the output pins and the display data will have the correspondences listed in the tables below. For example, if the output pin S4/P4 has the general-purpose output port function selected, it will output a high level LCD ) when the display data D13 is 1, and will output a low level (VSS) when D13 is 0. 2. DR: 1/2 bias drive or 1/3 bias drive switching control data This control data bit selects either 1/2 bias drive or 1/3 bias drive. 3. SC: Segments on/off control data This control data bit controls the on/off state of the segments. However, note that when the segments are turned off by setting SC to 1, the segments are turned off by outputting segment off waveforms from the segment output pins. 4. BU: Normal mode/power-saving mode control data This control data bit selects either normal mode or power-saving mode. Page 7 LC75814V Control data Output pin states P0 P1 P2 S1/P1 S2/P2 S3/P3 S4/P4 0 0 0 S1 S2 S3 S4 0 0 1 P1 S2 S3 S4 0 1 0 P1 P2 S3 S4 0 1 1 P1 P2 P3 S4 1 0 0 P1 P2 P3 P4 Output pin Corresponding display data S1/P1 D1 S2/P2 D5 S3/P3 D9 S4/P4 D13 DR Drive type 0 1/3 bias drive 1 1/2 bias drive SC Display state 0 On
1 Off
0 Normal mode
Power saving mode (The OSC pin oscillator is stopped, and the common and segment output pins go to the VSS level. However, the 1 S1/P1 to S4/P4 output pins that are set to be general-purpose output ports by the control data P0 to P2 can be used as general- purpose output ports.)
Display Data to Segment Output Pin Correspondence Note: This applies to the case where the S1/P1 to S4/P4 output pins are set to be segment output ports. For example, the table below lists the segment output states for the S11 output pin. Segment COM1 COM2 COM3 COM4output pin S1/P1 D1 D2 D3 D4 S2/P2 D5 D6 D7 D8 S3/P3 D9 D10 D11 D12 S4/P4 D13 D14 D15 D16 S5 D17 D18 D19 D20 S6 D21 D22 D23 D24 S7 D25 D26 D27 D28 S8 D29 D30 D31 D32 S9 D33 D34 D35 D36 S10 D37 D38 D39 D40 S11 D41 D42 D43 D44 S12 D45 D46 D47 D48 S13 D49 D50 D51 D52 S14 D53 D54 D55 D56 S15 D57 D58 D59 D60 S16 D61 D62 D63 D64 Display data Segment output pin (S11) state D41 D42 D43 D44 0 0 0 0 The LCD segments corresponding to COM1 to COM4 are off. 0 0 0 1 The LCD segment corresponding to COM4 is on. 0 0 1 0 The LCD segment corresponding to COM3 is on. 0 0 1 1 The LCD segments corresponding to COM3 and COM4 are on. 0 1 0 0 The LCD segment corresponding to COM2 is on. 0 1 0 1 The LCD segments corresponding to COM2 and COM4 are on. 0 1 1 0 The LCD segments corresponding to COM2 and COM3 are on. 0 1 1 1 The LCD segments corresponding to COM2, COM3 and COM4 are on. 1 0 0 0 The LCD segment corresponding to COM1 is on. 1 0 0 1 The LCD segments corresponding to COM1 and COM4 are on. 1 0 1 0 The LCD segments corresponding to COM1 and COM3 are on. 1 0 1 1 The LCD segments corresponding to COM1, COM3 and COM4 are on. 1 1 0 0 The LCD segments corresponding to COM1 and COM2 are on. 1 1 0 1 The LCD segments corresponding to COM1, COM2 and COM4 are on. 1 1 1 0 The LCD segments corresponding to COM1 to COM3 are on. 1 1 1 1 The LCD segments corresponding to COM1 to COM4 are on.
1/4 Duty, 1/2 Bias Drive Technique 1/4 Duty, 1/2 Bias Waveforms 512 fOSC [Hz] COM1 VLCD COM2 COM3 COM4 LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are turned off. LCD driver output when only LCD segments corresponding to COM1 are on. LCD driver output when only LCD segments corresponding to COM2 are on. LCD driver output when LCD segments corresponding to COM1 and COM2 are on. LCD driver output when LCD segments corresponding to COM1 and COM3 are on. LCD driver output when LCD segments corresponding to COM2 and COM3 are on. LCD driver output when LCD segments corresponding to COM1, COM2, and COM3 are on. LCD driver output when LCD segments corresponding to COM2 and COM4 are on. LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are on. LCD driver output when only LCD segments corresponding to COM4 are on. LCD driver output when only LCD segments corresponding to COM3 are on. VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2 VLCD VLCD 1, VLCD 2
1/4 Duty, 1/3 Bias Drive Technique 1/4 Duty, 1/3 Bias Waveforms 512 fOSC [Hz] COM1 COM2 COM3 COM4 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 VLCD VLCD 2 VLCD 1 LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are turned off. LCD driver output when only LCD segments corresponding to COM1 are on. LCD driver output when only LCD segments corresponding to COM2 are on. LCD driver output when LCD segments corresponding to COM1 and COM2 are on. LCD driver output when LCD segments corresponding to COM1 and COM3 are on. LCD driver output when LCD segments corresponding to COM2 and COM3 are on. LCD driver output when LCD segments corresponding to COM1, COM2, and COM3 are on. LCD driver output when LCD segments corresponding to COM2 and COM4 are on. LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are on. LCD driver output when only LCD segments corresponding to COM4 are on. LCD driver output when only LCD segments corresponding to COM3 are on.
The INH pin and Display Control Since the IC internal data (the display data D1 to D64 and the control data) is undefined when power is first applied, applications should set the INH pin low at the same time as power is applied to turn off the display (This sets the S1/P1 to S4/P4, S5 to S16, and COM1 to COM4 to the V SS level.) and during this period send serial data from the controller. The controller should then set the INH pin high after the data transfer has completed. This procedure prevents meaningless displays at power on. (See Figure 3.) Notes on the Power On/Off Sequences
- At power on: Logic block power supply (VDD ) on fi LCD driver block power supply (VLCD ) on
- At power off: LCD driver block power supply (VLCD ) off fi Logic block power supply (VDD ) off However, if the logic and LCD driver block use a shared power supply, then the power supplies can be turned on and off at the same time. Figure 3 Notes on Controller Transfer of Display Data Since the LC75814V accept display data (D1 to D64) divided into two separate transfer operations, we recommend that applications transfer all of the display data within a period of less than 30 ms to prevent observable degradation of display quality. INH CE VDD VLCD UndefinedDefined Display and control data transfer Undefined UndefinedDefinedUndefined tc VIL VIL Note: t1 ‡ 0 t2 > 0 t3 ‡ 0 (t2 > t3) tc ... 10 µs min D1 to D32 P0 to P2 DR, SC, BU Internal data Internal data (D33 to D64)
Sample Application Circuit 1 1/2 Bias (for use with normal panels) Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. Sample Application Circuit 2 1/2 Bias (for use with large panels) Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. (P1) (P3) (P2) (P4) C ‡ 0.047 µF +3V +5V From the microcontroller C General-purpose output ports Used for functions such as backlight control COM1 COM3 COM2 COM4 P2 / S2 P4 / S4 P1 / S1 P3 / S3 S14 S15 S16 OSC VDD VSS VLCD VLCD 1 VLCD 2 INH CE CL DI LCD panel (up to 64 segments) (P1) (P3) (P2) (P4) 10 kΩ ‡ R ‡ 1 kΩ C ‡ 0.047 µF +3V +5V C R R COM1 COM3 COM2 COM4 P2 / S2 P4 / S4 P1 / S1 P3 / S3 S14 S15 S16 OSC VDD VSS VLCD VLCD 1 VLCD 2 INH CE CL DI From the microcontroller General-purpose output ports Used for functions such as backlight control LCD panel (up to 64 segments)
Sample Application Circuit 3 1/3 Bias (for use with normal panels) Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. Sample Application Circuit 4 1/3 Bias (for use with large panels) Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. (P1) (P3) (P2) (P4) C ‡ 0.047µF +3V +5V CC COM1 COM3 COM2 COM4 P2 / S2 P4 / S4 P1 / S1 P3 / S3 S14 S15 S16 OSC VDD VSS VLCD VLCD 1 VLCD 2 INH CE CL DI From the microcontroller General-purpose output ports Used for functions such as backlight control LCD panel (up to 64 segments) (P1) (P3) (P2) (P4) 10 kΩ ‡ R ‡ 1 kΩ C ‡ 0.047 µF +3V +5V C C R R R COM1 COM3 COM2 COM4 P2 / S2 P4 / S4 P1 / S1 P3 / S3 S14 S15 S16 OSC VDD VSS VLCD VLCD 1 VLCD 2 INH CE CL DI From the microcontroller General-purpose output ports Used for functions such as backlight control LCD panel (up to 64 segments)
www.onsemi.com Package Dimensions unit : mm SSOP30 (275mil) CASE 565AT ISSUE A SOLDERING FOOTPRINT* NOTE: The measurements are not to guarantee but for reference only. *For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. (Unit: mm) 7.00 0.32 1.00 0.65 XXXXX = Specific Device Code Y = Year M = Month DDD = Additional Traceability Data GENERIC MARKING DIAGRAM* *This information is generic. Please refer to device data sheet for actual part marking. XXXXXXXXXX YMDDD to
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Device Package Shipping (Qty / Packing) LC75814V-TLM-E SSOP30 (275mil) (Pb-Free) 1000 / Tape & Reel LC75814VS-TLM-E SSOP30 (275mil) (Pb-Free) 1000 / Tape & Reel † For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://www.onsemi.com/pub_link/Collateral/BRD8011-D.PDF