ST72361AR4-Auto datasheet(223/279 Pages) STMICROELECTRONICS

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ST72361xx-Auto

Instruction set

Doc ID 12468 Rev 3

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18.1.7

Relative mode (direct, indirect)

This addressing mode is used to modify the PC register value, by adding an 8-bit signed

offset to it.

The relative addressing mode consists of two submodes:

Relative (direct)

The offset is following the opcode.

Relative (indirect)

The offset is defined in memory, which address follows the opcode.

18.2

Instruction groups

The ST7 family devices use an instruction set consisting of 63 instructions. The instructions

may be subdivided into 13 main groups as illustrated in the following table:

BSET, BRES

Bit Operations

BTJT, BTJF

Bit Test and Jump Operations

SLL, SRL, SRA, RLC, RRC

Shift and Rotate Operations

SWAP

Swap Nibbles

CALL, JP

Call or Jump subroutine

Table 89.

Instructions supporting direct, indexed, indirect and indirect indexed

addressing (part 2) (continued)

Short instructions only

Function

Available relative direct/indirect instructions

Function

JRxx

Conditional Jump

CALLR

Call Relative

Table 90.

Instruction groups

Description

Instruction

Load and transfer

CLR

Stack operation

PUSH

POP

RSP

Increment/ decrement

INC

DEC

Compare and tests

TNZ

BCP

Logical operations

AND

XOR

CPL

NEG

Bit operation

BSET

BRES

Conditional bit test and branch

BTJT

BTJF

Arithmetic operations

ADC

ADD

SUB

SBC

MUL

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