UPD75518GF datasheet(9/180 Pages) NEC

Part #	UPD75518GF

Description	4 BIT SINGLE-CHIP MICROCOMPUTER

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Manufacturer	NEC [NEC]

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

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9 / 180 page

9

µPD75518(A)

1.2

NON-PORT PINS

Notes 1. The circuits enclosed in circles have a Schmitt-triggered input.

2. Be sure to input VSS level to this pin.

Function

Also

used as

Pin name

I/O

I

O

I/O

I

I/O

O

I

–

I

–

I

O

–

Synchronous

Asynchronous

Edge detection vectored interrupt input pin

(The edge to be detected is selectable.)

Edge detection testable input pin

(An rising edge is detected.)

P13

P20

P22

P23

P01

P02

P03

P00

P10

P11

P12

P60-P63

P70-P73

P81

P82

P83

–

P150-P153

–

P80

–

External event pulse input pin for the timer/event counter

Timer/event counter output pin

Clock output pin

Fixed frequency output pin (for buzzer or system clock

trimming)

Serial clock I/O pin

Serial data output pin or serial bus I/O pin

Serial data input pin or serial bus I/O pin

Edge detection vectored interrupt input pin (Either a rising

or falling edge is detected.)

Parallel-falling-edge-sensitive testable input pins

Serial clock I/O pin

Serial data output pin

Serial data input pin

Analog input pins to A/D converter

A/D converter reference voltage input pin

A/D converter reference GND pin

Pin for connection to a crystal/ceramic resonator for main

system clock generation. When external clock is used, it is

input to X1, and its inverted signal is input to X2.

Pin for connection to a crystal resonator for subsystem

clock generation. When external clock is used, it is input to

XT1, and XT2 is left open.

System reset input pin

Timer/pulse generator pulse output pin

Positive power supply pin

Ground pin

Internally connectedNote 2

–

Input

–

Input

–

Input

–

TI0

PTO0

PCL

BUZ

SCK0

SO0/SB0

SI0/SB1

INT4

INT0

INT1

INT2

KR0-KR3

KR4-KR7

SCK1

SO1

SI1

AN0-AN3

AN4-AN7

AVREF

AVSS

X1, X2

XT1

XT2

RESET

PPO

VDD

VSS

IC

I/ONote 1

circuit

type

When reset

B

- C

E - B

F

- A

F

- B

M

- C

B

- C

B

- C

F

- C

F

- A

F

E

B

Y

Y - A

Z

–

B

E

–

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