MSM65516 Ver la hoja de datos (PDF) - Oki Electric Industry

Número de pieza

componentes Descripción

Fabricante

MSM65516

High performance 8-Bit Microcontroller

Oki Electric Industry 

¡ Semiconductor

MSM65516/65P516

PIN DESCRIPTIONS

Basic Functions

Function

Power

Supply

Oscillation

Symbol

VDD

GND

OSC0

OSC1

RESET

Type

—

—

I

O

I

EA

I

Control

RD

O

ALE

O

PORT 0

I/O

PORT 1

I/O

Port

PORT 2

I/O

PORT 3

PORT 4

PORT 5

PORT 6

I

Description

+5V power supply

0V digital ground

Crystal oscillator input/external clock input

Crystal oscillator output

System reset input (program starts from address 0040H);

internal pull-up resistance

Program memory select input pin.

"L" level input for external program memory; "H" level input for internal

program memory.

Read strobe signal during external memory access

Address latch signal during external memory access

8-bit Input-output port

During external memory access, becomes address/data bus for address

output, instruction fetch or data read/write along with ALE, RD and WR

pins.

8-bit Input-output port

Address bus during external memory access

8-bit Input-output port ¥ 4. Secondary functions shown in following table

are added for ports 2 and 3.

8-bit Input port

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