UPD75P3018GC-3B9 Ver la hoja de datos (PDF) - NEC => Renesas Technology

Número de pieza

componentes Descripción

Fabricante

UPD75P3018GC-3B9

4-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD75P3018

3.2 Non-port Pins (2/2)

Pin name

I/O

Shared by

S0-S23

Output

—

S24-S31

Output BP0-BP7

COM0-COM3 Output

—

VLC0-VLC2

—

—

BIAS

Output

—

LCDCLNote 2

SYNCNote 2

I/O P30

I/O P31

Function

Status I/O circuit

after reset type

Segment signal output

Note 1

G-A

Segment signal output

Note 1

H-A

Common signal output

Note 1

G-B

Power source for LCD driver

—

—

Output for external split resistor cut

High

—

impedance

Clock output for driving external expansion driver

Input

E-B

Clock output for synchronization of external expansion driver Input

E-B

Notes 1. The VLCX (X = 0, 1, 2) shown below are selected as the input source for the display outputs.

S0-S31: VLC1, COM0-COM2: VLC2, COM3: VLC0

2. These pins are provided for future system expansion. Currently, only P30 and P31 are used.

9

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