W742S81A Datasheet, PDF(45/47 Page) Winbond – 4 BIT MICROCONTROLLER

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W742S81A Datasheet, PDF (45/47 Pages) Winbond – 4 BIT MICROCONTROLLER

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W742S81A

Instruction set, continued

Machine code

Flag & Register

0101 0100 0000 i 0 i i

0100 1111 0xxx xxxx

0100 0010 0000 0000

0101 0000 0100 0000

0101 0000 0000 0000

0001 0111 0000 0000

0101 0101 1000 0000

0101 0110 0000 i i i i

0101 1111 0xxx xxxx

0001 0111 1000 0000

DTMF

1001 1110 1xxx xxxx

0011 0100 1000 0iii

Shift & Rotate

0100 1101 0xxx xxxx

Mnemonic

MOV

MOVA

CLR

SET

CLR

CLR

CLR

MOV

MOVA

CLR

SCR, #I

R, PSR0

PSR0

CF

CF

DIVR0

DIVR1

WDTR, #I

R,WDTR

WDT

MOV

MOV

DTMF,R

DTCR,I

SHRC

R

0100 1101 1xxx xxxx

RRC

R

0100 1100 0xxx xxxx

SHLC

R

0100 1100 1xxx xxxx

RLC

R

Function

SCRâI

ACC, RâPort Status Register 0

Clear Port Status Register 0

Set Carry Flag

Clear Carry Flag

Clear the last 4-bit of the Divider 0

Clear the last 4-bit of the Divider 1

WDTRâI

ACC, RâWatchdog Timer Register

Clear Watchdog Timer

DTMFâ(R)

DTCRâI

ACC.n, R.nâ(R.n+1);

ACC.3, R.3â0; CFâR.0

ACC.n, R.nâ(R.n+1);

ACC.3, R.3âCF; CFâR.0

ACC.n, R.nâ(R.n-1);

ACC.0, R.0â0; CFâR.3

ACC.n, R.nâ(R.n-1);

ACC.0, R.0âCF; CFâR.3

Flag affected

W/C

1/1

ZF

1/1

1/1

CF

1/1

CF

1/1

1/1

1/1

1/1

ZF

1/1

1/1

1/1

1/1

ZF, CF

1/1

ZF, CF

1/1

ZF, CF

1/1

ZF, CF

1/1

Publication Release Date: March 2003

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Revision A1

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