PM0044 datasheet(32/162 Pages) STMICROELECTRONICS

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STM8 addressing modes

PM0044

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Doc ID 13590 Rev 3

6.1

Inherent addressing mode

All related instructions are 1 or 2 byte. The op-code fully specifies all required information for

the CPU to process the operation.

Example:

1000

RCF

; Reset carry flag

1001

NOP

; No operation

1002

LD A,X; Transfer X register content into accumulator

1004

PUSH A; Push accumulator content onto the stack

Table 18.

Inherent addressing instructions

Instructions

Functions

NOP

No operation

TRAP

S/W Interrupt

WFI, WFE

Wait For Interrupt / Event (Low Power Mode)

HALT

Halt Oscillator (Lowest Power Mode)

RET

Sub-routine Return

RETF

Far Sub-routine Return

IRET

Interrupt Sub-routine Return

SIM

Set Interrupt Mask

RIM

Reset Interrupt Mask

SCF

Set Carry Flag

RCF

Reset Carry Flag

RVF

Reset Overflow Flag

CCF

Complement Carry Flag

LD, LDW

Load

CLR, CLRW

Clear

PUSH, POP, PUSHW, POPW

Push/Pop to/from the stack

INC, DEC, INCW, DECW

Increment/Decrement

TNZ, TNZW

Test Negative or Zero

CPL, NEG, CPLW, NEGW

1’s or 2’s Complement

MUL

Byte Multiplication

DIV, DIVW

Division

EXG, EXGW

Exchange

SLA, SLL, SRL, SRA, RLC,

RRC, SLAW, SLLW, SRLW,

SRAW, RLCW, RRCW

Shift and Rotate Operations

SWAP, SWAPW

Swap Nibbles/Bytes

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