HTG1390 Просмотр технического описания (PDF) - Holtek Semiconductor

Номер в каталоге

Компоненты Описание

Список матч

HTG1390

4-bit Microcontroller

Holtek Semiconductor 

INC [R1R0]

Machine code

Description

Operation

INC [R3R2]

Machine code

Description

Operation

JAn address

Machine code

Description

Operation

JC address

Machine code

Description

Operation

JMP address

Machine code

Description

Operation

JNC address

Machine code

Description

Operation

Preliminary

HTG1390

Increment data memory

00001100

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

mented by one. Carry flag is not affected.

M(R1,R0) ← M(R1,R0)+1

Increment data memory

00001110

Data memory specified by the register pair “R3,R2” is incremented by one.

Carry flag is not affacted.

M(R3,R2) ← M(R3,R2)+1

Jump if accumulator bit n is set

100nnaaa aaaaaaaa

Bits 0~10 of the program counter are replaced with the directly-specified

address but bit 11 of the program counter is unaffected, if accumulator bit

n is set to one.

PC (bit 0~10) ← address, if ACC bit n=1(n=0~3)

PC ← PC+2, if ACC bit n=0

Jump if carry is set

11000aaa aaaaaaaa

Bits 0~10 of the program counter are replaced with the directly-specified

address but bit 11 of the program counter is unaffected, if the CF (Carry

flag) is set to one.

PC (bit 0~10) ← address, if CF=1

PC ← PC+2, if CF=0

Direct jump

1110aaaa aaaaaaaa

Bits 0~11 of the program counter are replaced with the directly-specified

address.

PC ← address

Jump if carry is not set

11001aaa aaaaaaaa

Bits 0~10 of the program counter are replaced with the directly-specified

address and bit 11 of the program counter is unaffected, if the CF (Carry

flag) is set to zero.

PC (bit 0~10) ← address, if CF=0

PC ← PC+2, if CF=1

19

17th Nov ’98

Share Link: