EM73982 查看數據表（PDF） - ELAN Microelectronics

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EM73982

4-BIT MICROCONTROLLER

ELAN Microelectronics 

EM73982

4-BIT MICROCONTROLLER

PC 0 0 a a a a a a a a a a a

RET

Object code: 0100 1111

Condition: PC ← STACK[SP]; SP + 1

PC The return address stored in stack

RT I

Object code: 0100 1101

Condition : FLAG. PC ← STACK[SP]; EI ← 1; SP + 1

PC The return address stored in stack

(3) Interrupt acceptance operation:

When an interrupt is accepted, the original PC is pushed into stack and interrupt vector will be loaded into

PC,The interrupt vectors are as following:

INT0 (External interrupt from P8.2)

PC 0 0 0 0 0 0 0 0 0 0 0 1 0

TRGA (Timer A overflow interrupt)

PC 0 0 0 0 0 0 0 0 0 0 1 1 0

TRGB (Time B overflow interrupt)

PC 0 0 0 0 0 0 0 0 0 1 0 0 0

TBI (Time base interrupt)

PC 0 0 0 0 0 0 0 0 0 1 0 1 0

SPI (Speech ending interrupt)

PC 0 0 0 0 0 0 0 0 0 1 1 0 0

(4) Reset operation:

PC 0 0 0 0 0 0 0 0 0 0 0 0 0

(5) Other operations:

For 1-byte instruction execution: PC + 1

For 2-byte instruction execution: PC + 2

For 3-byte instruction execution: PC + 3

* This specification are subject to be changed without notice.

11.30.2001 14

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