EM73880 데이터 시트보기 (PDF) - ELAN Microelectronics

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EM73880

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

ELAN Microelectronics 

(3) Interrupt acceptance operation:

EM73880

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminary

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 1 0

HTC (High speed counter)

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

SPI (Speech Interrupt)

PC 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

(5) Other operations:

For 1-byte instruction execution: PC + 1

For 2-byte instruction execution: PC + 2

For 3-byte instruction execution: PC + 3

ACCUMULATOR

Accumulator is a 4-bit data register for temporary data . For the arithematic, logic and comparative opertion

.., ACC plays a role which holds the source data and result .

* This specification are subject to be changed without notice.

11.30.2001 8

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