EM73982 View Datasheet(PDF) - ELAN Microelectronics

Part Name

Description

MFG CO.

EM73982

4-BIT MICROCONTROLLER

ELAN Microelectronics 

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EM73982

4-BIT MICROCONTROLLER

INSTRUCTION TABLE

(1) Data Transfer

Mnemonic Object code ( binary ) Operation description

Byte

LDA x

LDAM

LDAX

LDAXI

LDH #k

LDHL x

LDIA #k

LDL #k

STA x

STAM

STAMD

STAMI

STD #k,y

STDMI #k

THA

TLA

0110 1010 xxxx xxxx

0101 1010

0110 0101

0110 0111

1001 kkkk

0100 1110 xxxx xx00

1101 kkkk

1000 kkkk

0110 1001 xxxx xxxx

0101 1001

0111 1101

0111 1111

0100 1000 kkkk yyyy

1010 kkkk

0111 0110

0111 0100

Acc←RAM[x]

2

Acc ←RAM[HL]

1

Acc←ROM[DP]L

1

Acc←ROM[DP]H,DP+1

1

HR←k

1

LR←RAM[x],HR←RAM[x+1] 2

Acc←k

1

LR←k

1

RAM[x]←Acc

2

RAM[HL]←Acc

1

RAM[HL]←Acc, LR-1

1

RAM[HL]←Acc, LR+1

1

RAM[y]←k

2

RAM[HL]←k, LR+1

1

Acc←HR

1

Acc←LR

1

Cycle

2

1

2

2

1

2

1

1

2

1

1

1

2

1

1

1

Flag

C ZS

- Z1

- Z1

- Z1

- Z1

- -1

- -1

- Z1

- -1

- -1

- -1

- ZC

- Z C'

- -1

- Z C'

- Z1

- Z1

(2) Rotate

Mnemonic Object code ( binary ) Operation description

RLCA

RRCA

0101 0000

0101 0001

←CF←Acc←

→CF→Acc→

Byte Cycle

Flag

C ZS

1

1

C Z C'

1

1

C Z C'

(3) Arithmetic operation

Mnemonic Object code ( binary ) Operation description

ADCAM

ADD #k,y

ADDA #k

ADDAM

ADDH #k

ADDL #k

ADDM #k

DECA

DECL

DECM

INCA

0111 0000

0100 1001 kkkk yyyy

0110 1110 0101 kkkk

0111 0001

0110 1110 1001 kkkk

0110 1110 0001 kkkk

0110 1110 1101 kkkk

0101 1100

0111 1100

0101 1101

0101 1110

Acc←Acc + RAM[HL] + CF

RAM[y]←RAM[y] +k

Acc←Acc+k

Acc←Acc + RAM[HL]

HR←HR+k

LR←LR+k

RAM[HL]←RAM[HL] +k

Acc←Acc-1

LR←LR-1

RAM[HL]←RAM[HL] -1

Acc←Acc + 1

Byte Cycle

Flag

C ZS

1

1

C Z C'

2

2

- Z C'

2

2

- Z C'

1

1

- Z C'

2

2

- Z C'

2

2

- Z C'

2

2

- Z C'

1

1

- ZC

1

1

- ZC

1

1

- ZC

1

1

- Z C'

* This specification are subject to be changed without notice.

11.30.2001 37

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