MTU8B54EP View Datasheet(PDF) - Myson Century Inc

Part Name

Description

View to exact match

MTU8B54EP

EPROM-Based 8-Bit CMOS Microcontroller

Myson Century Inc 

MYSON

TECHNOLOGY

3.2 INSTRUCTION SET

MTU8B54E/55E/56E/57E

Mnemonic

Operands

Description

Cycles

Instruction

Code

Status

Affected

BCR R, bit Clear bit in R

1

11 11bb brrr rrrr None

BSR R, bit Set bit in R

1

11 10bb brrr rrrr None

BTRSC R, bit Test bit in R and skip if clear

1 or

11 01bb brrr rrrr

2(skip)

None

BTRSS R, bit Test bit in R and skip if set

1 or

11 00bb brrr rrrr

2(skip)

None

CLRWDT

Clear Watchdog Timer

1

01 0000 0000 0001 TO, PD

T0MODE

Load T0MODE Register

1

01 0000 0000 0010 None

SLEEP

Go into standby mode

1

01 0000 0000 0011 TO, PD

IOST R

Load IOST Register

1

01 0000 0000 0rrr None

ANDIA I

AND immediate with Acc

1

00 1001 iiii iiii

Z

XORIA I

Exclusive OR immediate with Acc

1

00 1000 iiii iiii

Z

MOVIA I

Move immediate to Acc

1

00 0001 iiii iiii None

IORIA I

Inclusive OR immediate with Acc

1

00 0011 iiii iiii

Z

RETIA I

Return, place immediate in A

2

00 1100 iiii iiii None

LCALL I

Call subroutine

2

10 0iii iiii iiii None

LGOTO I

Unconditional branch

2

10 1iii iiii iiii None

NOP

No operation

1

01 0000 0000 0000 None

MOVAR R

Move Acc to R

1

01 0000 1rrr rrrr None

COMR R, d Complement R

1

01 0010 drrr rrrr

Z

MOVR R

Move R

1

01 0011 drrr rrrr

Z

RRR R, d

Rotate right R

1

01 1110 drrr rrrr

C

RLR R, d

Rotate left R

1

01 1100 drrr rrrr

C

SWAPR R, d Swap halves R

1

01 1101 drrr rrrr None

CLRA

Clear Acc

1

01 0001 0000 0000

Z

CLRR R

Clear R

1

01 0001 1rrr rrrr

Z

INCR R, d

Increment R

1

01 1000 drrr rrrr

Z

INCRSZ R, d Increment R, Skip if 0

1 or

01 1001 drrr rrrr

2(skip)

None

Revision 1.2

-7-

24 October 2000

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