HTG12N0 datasheet(21/30 Pages) HOLTEK

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DEC [R3R2]

Decrement data memory

Machine Code

0 0 0 0 1 1 1 1

Description

Data in the data memory specified by register pair “R3,R2” is decremented

by one. Carry flag is not affected.

Operation

M(R3,R2)

← M(R3,R2)–1

Disable interrupt

Machine Code

0 0 1 0 1 1 0 1

Description

Internal time–out interrupt and external interrupt are disabled.

Enable interrupt

Machine Code

0 0 1 0 1 1 0 0

Description

Internal time-out interrupt and external interrupt are enabled.

HALT

Halt system clock

Machine Code

0 0 1 1 0 1 1 1

0 0 1 1 1 1 1 0

Description

Turn off system clock, and enter power down mode.

Operation

← (PC)+1

IN A,Pi

Input port to accumulator

Machine Code

0 0 1 1 0 0 1 0 PM

0 0 1 1 0 0 1 1 PS

Description

The data on port “Pi” is transferred to the accumulator.

Operation

ACC

← Pi; Pi=PM or PS

INC A

Increment accumulator

Machine Code

0 0 1 1 0 0 0 1

Description

Data in the accumulator is incremented by one. Carry flag is not affected.

Operation

ACC

← ACC+1

INC Rn

Increment register

Machine Code

0 0 0 1 n n n 0

Description

Data in the working register “Rn” is incremented by one. Carry flag is not

affected.

Operation

← Rn+1; Rn=R0,R1,R2,R3,R4 for nnn=0,1,2,3,4

INC [R1R0]

Increment data memory

Machine Code

0 0 0 0 1 1 0 0

Description

Data in the data memory specified by the register pair “R1,R0” is incre-

mented by one. Carry flag is not affected.

Operation

M(R1,R0)

← M(R1,R0)+1

HTG12N0

18th Mar ’99

HTG12N0 数据表(PDF) 21 Page - Holtek Semiconductor Inc

HTG12N0 数据表(HTML) 21 Page - Holtek Semiconductor Inc

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HTG12N0 数据表(PDF) 21 Page - Holtek Semiconductor Inc

HTG12N0 数据表(HTML) 21 Page - Holtek Semiconductor Inc

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