UPD753204 datasheet(10/80 Pages) NEC

Part #	UPD753204

Description	4-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

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

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10 / 80 page

10

µPD753204, 753206, 753208

3.2 Non-Port Pins (2/2)

Pin Name

Input/Output

Alternate

Function

After Reset

I/O Circuit

Function

TYPE Note 1

X1

Input

–

Crystal/ceramic connection pin for the system

–

clock oscillator. When inputting the external

clock, input the external clock to pin X1, and

X2

–

the reverse phase of the external clock to pin

X2.

RESET

Input

–

System reset input (low-level active)

–

(B)

IC

–

Internally connected. Connect directly to VDD.–

–

VDD

–

Positive power supply

–

VSS

–

Ground potential

–

Note Characters in parentheses indicate the Schmitt-trigger input.

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