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EM73P362CQ

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

ELAN Microelectronics 

EM73P362

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

SF=0 ; PC ← PC + 2 (branch condition not satisfied)

PC

Original PC value + 2

(2) Subroutine instruction:

SCALL a

Object code: 1110 nnnn

Condition : PC ← a ; a=8n+6 ; n=1..15 ; a=86h, n=0

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

LCALL a

Object code: 0100 0aaa aaaa aaaa

Condition: PC ← a

PC 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 P0.2)

PC 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 1 1 0

TRGB (Time B overflow interrupt)

PC 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 1 0 1 0

* This specification are subject to be changed without notice.

11.1.2001 8

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