MSM66207 datasheet(8/30 Pages) OKI

8 / 30 page

8/30

¡ Semiconductor

MSM66201/66P201/66207/66P207

PIN DESCRIPTION (Continued)

RESOUT

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

Reset to"L" level by program.

ALE

Address Latch Enable:

PSEN

Program Strobe Enable:

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.

READY

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.

FLT

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.

RES

RESET input pin.

OSC0

OSC1

Basic clock oscillation pin.

NMI

Non-maskable interrupt input pin (falling edge).

VREF

Reference voltage input pin for A/D converter.

AGND

Ground for A/D converter.

VDD

System power supply.

GND

Ground.

Type

Description

Symbol

—

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

output from port 0 when the CPU accesses the external

memory.

The strobe pulse to fetch to external program

memory.

Basic clock oscillation pin.

MSM66207 Datasheet(PDF) 8 Page - OKI electronic componets

MSM66207 Datasheet(HTML) 8 Page - OKI electronic componets

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Datasheet Download

Link URL