Datasheet > M80C51

M80C51

更新时间： 2022-11-24 21:08:53

品牌	Logo	应用领域
冲电气 - OKI		微控制器
页数	文件大小	规格书
39页	353K
描述
CMOS 8-Bit Microcontroller

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数据手册

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M80C51 数据手册

E2E1037-19-41

This version: Mar. 1995

MSM80C31F/80C51F

¡ Semiconductor

MSM80C31F/MSM80C51F

CMOS 8-Bit Microcontroller

GENERAL DESCRIPTION

The OKI MSM80C31F/MSM80C51F microcontroller is a low-power, 8-bit device implemented

in OKI's silicon-gate complementary metal-oxide semiconductor process technology. The

device includes 4K bytes of mask programmable ROM (MSM80C51F only), 128 bytes of

data RAM, 32 I/O lines, two 16-bit timer/counters, a five-source two-level interrupt

structure, a full duplex serial port, and an oscillator and clock circuitry. In addition, the device

has two software selectable modes for further power reduction — Idle and Power Down. Idle

modefreezestheCPU'sin-structionexecutionwhilemaintainingRAMandallowingthetimers,

serial port and interrupt system to continue functions. Power Down mode saves the RAM

contents but freezes the oscillator causing all other device functions to be inoperative.

FEATURES

• Low power consumption by 2 mm silicon gate CMOS process technology

• Fully static circuit

• Internal program memory

• External program memory space

• Internal data memory (RAM)

• External data memory (RAM) space

• I/O ports

4K bytes (MSM80C51F)

64K bytes

128 bytes

64K bytes

8-bit ¥ 4 ports

• Two 16-bit timer/counters

• Multifunctional serial port (UART)

• Five interrupt sources (Priority can be set)

• Four sets of working registers (R0-7 ¥ 4)

• Stack

Internal data memory (RAM)

128-byte area can be used arbitrarily (by SP specified)

• Two CPU power-down modes

(1) Idle mode

CPU stopped while oscillation continued.

(Software setting)

(2) PD mode

CPU and oscillation all stopped.

(Software setting)

(Setting I/O ports to floating status possible)

• Operating temperature

–40 to +85°C (@ 12 MHz, V = 5 V ±20%)

–20 to +70°C (@ 16 MHz, V = 5 V ±5%)

• 2-byte 1-machine cycle instructions

• Multiplication/division instructions

1 msec. @ 12 MHz

0.75 msec. @ 16 MHz

4 msec. @ 12 MHz

3 msec. @ 16 MHz

• Instruction code addressing method

Byte specification

Data addressing (direct)

Bit addressing

Bit specification

1/38

12 3 4 5 6 7...39

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