UPD754264 View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD754264

4-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD754264

3.2 Non-port Pins

Pin Name

PTO0

PTO1

PTO2

INT0

KR4 to KR7

AN0

AN1

KRREN

AVREF

X1

X2

RESET

IC

VDD

VSS

Input/Output

Output

Alternate

Function

P30

Function

Timer counter output pins

I/O Circuit

After Reset

TYPE Note 1

Input

E-B

P31

P32

Input

P61

Edge detection vectored Noise elimination

interrupt input pin

circuit can be

(detected edge can be

selected.

selected)

Asynchronous

Noise elimination circuit

input

can be selected.

Input

F -A

Input

P70 to P73 Falling edge detection testable input pins

Input

B -A

Input

P62

Analog signal input

Input

F -A

P63

Input

–

Key return reset enable pin

Input

B

The reset signal is generated at the falling edge

of KRn while KRREN is high in STOP mode.

Input

P60

A/D converter reference voltage

Input

F -A

Input

–

–

Crystal/ceramic resonator (for system clock

–

–

oscillation) connection pin

When inputting the external clock, input the

external clock to pin X1 and input the inverted

phase of the external clock to pin X2.

Input

–

System reset input pin (low-level active)

–

Pull-up resistor can be incorporated (mask option).

B -A

–

–

Internally Connected Connect directly to VDD.

–

–

–

–

Positive supply pin

–

–

–

–

Ground potential

–

–

Note Circled characters indicate the Schmitt-trigger input.

8

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