UPD753036GCA datasheet(11/88 Pages) NEC

Part #	UPD753036GCA

Description	4-BIT SINGLE-CHIP MICROCONTROLLER

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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11

µPD753036, 753036(A)

Data Sheet U11353EJ4V0DS00

3.2 Non-Port Pins (2/2)

Pin Name

Input/Output

Alternate

Function

State after

I/O Circuit

Function

Reset

Type Note 1

LCDCLNote 2

Output

P30

Clock output for externally expanded driver

Input

E-B

SYNCNote 2

Output

P31

Clock output for externally expanded driver sync

Input

E-B

X1

Input

–

Crystal/ceramic connection pin for the main

–

X2

–

system clock oscillator. When inputting the

external clock, input the external clock to pin

X1, and the reverse phase of the external clock

to pin X2.

XT1

Input

–

XT2

–

RESET

Input

–

System reset input (low level active)

–

B

IC

–

Internally connected. Connect directly to VDD.–

–

VDD

–

Positive power supply

–

VSS

–

GND

–

Notes 1. Circled characters indicate the Schmitt-trigger input.

2. These pins are provided for future system expansion. At present, these pins are used only as pins

P30 and P31.

Crystal connection pin for the subsystem clock oscillator.

When the external clock is used, input the external

clock to pin XT1 and the reverse phase of the

external clock to pin XT2. Pin XT1 can be used as

a 1-bit input (test) pin.

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