MSM66P201 Ver la hoja de datos (PDF) - Oki Electric Industry

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componentes Descripción

Fabricante

MSM66P201

OLMS-66K Series 16-Bit Microcontroller

Oki Electric Industry 

¡ Semiconductor

MSM66201/66P201/66207/66P207

PIN DESCRIPTION (Continued)

Symbol

RESOUT

ALE

PSEN

RD

WR

READY

EA

FLT

RES

OSC0

OSC1

NMI

VREF

AGND

VDD

GND

Type

O

O

O

O

O

I

I

I

I

I

O

I

—

—

—

—

Description

Outputs "H" level in the case of internal reset.

Reset to"L" level by program.

Address Latch Enable:

The timing pulse to latch the lower 8 bits of the address

output from port 0 when the CPU accesses the external

memory.

Program Strobe Enable: The strobe pulse to fetch to external program

memory.

Output strobe activated during a bus read cycle.

Used to enable data onto the bus from the external data memory.

Output strobe during a bus write cycle.

Used as write strobe to external data memory.

Used when the CPU accesses low-speed peripherals.

Normaly set to "H" level.

If set to "L" level, the CPU fetches the code from external program memory.

If FLT is "H" level, ALE, WR, RD, PSEN are set to "H" level when reset.

If FLT is set to "L", ALE, WR, RD, PSEN are set to floating level when reset.

RESET input pin.

Basic clock oscillation pin.

Basic clock oscillation pin.

Non-maskable interrupt input pin (falling edge).

Reference voltage input pin for A/D converter.

Ground for A/D converter.

System power supply.

Ground.

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