UPD75P3018A View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD75P3018A

4-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD75P3018A

3.2 Non-port Pins (2/2)

Pin Name

I/O Alternate Function

Function

After Reset I/O Circuit

Type

S0-S23

Output

—

Segment signal output

Note 1

G-A

S24-S31

Output BP0-BP7

Segment signal output

Note 1

H-A

COM0-COM3 Output

—

Common signal output

Note 1

G-B

VLC0-VLC2

—

—

Power source for LCD driver

—

—

BIAS

Output

—

Output for external split resistor cut

High

—

impedance

LCDCLNote 2

I/O P30/MD0

Clock output for driving external expansion driver

Input

E-B

SYNCNote 2

I/O P31/MD1

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.

Data Sheet U11917EJ2V0DS00

9

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