UPD750066CU datasheet(10/82 Pages) NEC

Part #	UPD750066CU

Description	4-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

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

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µPD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)

Data Sheet U10165EJ2V0DS00

3.2 Non-port Pins (1/2)

Pin Name

Input/Output

Alternate

Function

After Reset

I/O Circuit

Function

TypeNote

TI0

Input

P13

Inputs external event pulses to the timer/event

Input

<B>-C

TI1

P12/INT2

counter.

PTO0

Output

P20

Timer/event counter output

Input

E-B

PTO1

P21

PCL

P22

Clock output

BUZ

P23

Optional frequency output (for buzzer output

or system clock trimming)

SCK

Input/Output

P01

Serial clock input/output

Input

<F>-A

SO

Output

P02

Serial data output

<F>-B

SB0

Input/Output

Serial data bus input/output

SI

Input

P03

Serial data input

<M>-C

SB1

Input/Output

Serial data bus input/output

INT4

Input

P00

Edge detection vectored interrupt input (both

<B>

rising edge and falling edge detection)

INT0

Input

P10

Input

<B>-C

INT1

P11

Asynchronous

INT2

Input

P12/TI1

Rising edge detection

Asynchronous

Input

<B>-C

testable input

KR0 to KR3

Input

P60/AN4 to

Falling edge detection testable input

Input

<Y>-D

P63/AN7

AN0 to AN3

Input

P110 to P113

Analog signal input

Input

Y-A

AN4 to AN7

P60/KR0 to

<Y>-D

P63/KR3

AVREF

–

A/D converter reference voltage

–

Z-N

AVSS

–

A/D converter reference GND potential

–

Z-N

Note

Circuit types enclosed in brackets indicate the Schmitt trigger input.

Edge detection vectored

Noise elimination

interrupt input (detection

circuit/asynchronous

edge can be selected).

selection

INT0/P10 can select noise

elimination circuit.

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