MSM80C85 查看數據表（PDF） - Oki Electric Industry

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MSM80C85

8-Bit CMOS MICROPROCESSOR

Oki Electric Industry 

¡ Semiconductor

FUNCTIONAL BLOCK DIAGRAM

INTR INTA

RST

5.5 6.5 7.5 TRAP

MSM80C85AHRS/GS/JS

SID SOD

Interrupt Control

8-Bit Internal Data Bus

Serial I/O Control

Accumulator

(8)

Temporary Register

(8)

Flag (5)

Flip Flops

Instruction

Register (8)

Power

+5V

Supply

GND

Arithmetic

Logic Unit

ALU(8)

Instruction

Decoder

And

Machine

Cycle

Encoding

Power Down

Timing And Control

X1

CLK

X2

GEN

Control

Status

DMA

Reset

B REG (8)

C REG (8)

D REG (8)

E REG (8)

H REG (8)

C REG (8)

Stack Pointer (16)

Program Counter (16)

Incrementer/Decrementer

Address Latch (16)

Register

Array

Address Buffer (8)

Data/Address

Buffer (8)

CLK READY RD WR ALE S0 S1 IO / M HOLD HLDA RESET IN RESET OUT

OUT

A15 - A8

Address Bus

AD7 - AD0

Address/Data Bus

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