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LC75810E Arkusz danych(PDF) 7 Page - ON Semiconductor |
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LC75810E Arkusz danych(HTML) 7 Page - ON Semiconductor |
7 / 54 page LC75810E/T No.7141-7/54 Pin Functions Pin No. Pin LC75810E LC75810T Function Active level I/O Handling when unused S1 to S78 S79/COM10 S80/COM9 3 to 80 81 82 1 to 78 79 80 Segment driver outputs The S79/COM10 and S80/COM9 pins can be used as common driver outputs under the “set display technique” instruction. − O OPEN COM1 to COM8 90 to 83 88 to 81 Common driver outputs − O OPEN OSC 98 96 Oscillator connection. An oscillator circuit is formed by connecting an external resistor and capacitor at this pin. − I/O VDD CE 100 98 H I CL 1 99 I DI 2 100 Serial data transfer inputs. These pins are connected to the microcontroller. CE: Chip enable CL: Synchronization clock DI: Transfer data − I GND RES 99 97 Reset signal input • When RES is low (VSS) − Display off S1 to S78 = “L” (VSS) S79/COM10 and S80/COM9 = “L” (VSS) COM1 to COM8 = “L” (VSS) − Serial data transfer is disabled. − The OSC pin oscillator is stopped. • When RES is high (VDD) − Display on after a “display on/off control” (display on state setting) instruction is executed. − Serial data transfers are enabled. − The OSC pin oscillator operates. L I GND VLCD0 93 91 LCD drive 4/4 bias voltage (high level) supply pin. The level on this pin can be changed by the display contrast adjustment circuit. However, VLCD0 must be greater than or equal to 4.5 V. Also, external power must not be applied to this pin since the pin circuit includes the display contrast adjustment circuit. − O OPEN VLCD1 94 92 LCD drive 3/4 bias voltage (middle level) supply pin. This pin can be used to supply the 3/4 VLCD0 voltage level externally. − I OPEN VLCD2 95 93 LCD drive 2/4 bias voltage (middle level) supply pin. This pin can be used to supply the 2/4 VLCD0 voltage level externally. − I OPEN VLCD3 96 94 LCD drive 1/4 bias voltage (middle level) supply pin. This pin can be used to supply the 1/4 VLCD0 voltage level externally. − I OPEN VDD 91 89 Logic block power supply connection. Provide a voltage of between 2.7 and 6.0 V. − − − VLCD 92 90 LCD driver block power supply connection. Provide a voltage of between 7.0 and 10.0 V when the display contrast adjustment circuit is used and provide a voltage of between 4.5 and 10.0 V when the circuit is not used. − − − VSS 97 95 Power supply connection. Connect to ground. − − − |
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