ST7LITE20F2 datasheet(114/166 Pages) STMICROELECTRONICS

114 / 166 page

Instruction set

ST7LITE20F2 ST7LITE25F2 ST7LITE29F2

114/166

Doc ID 8349 Rev 5

12.1.7

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 follows the opcode.

●

Relative (indirect)

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

12.2

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 Table 55:

BTJT, BTJF

Bit Test and Jump operations

SLL, SRL, SRA, RLC, RRC

Shift and Rotate operations

SWAP

Swap nibbles

CALL, JP

Call or Jump sub-routine

Table 53.

Short instructions supporting direct, indexed, indirect and indirect

indexed addressing modes (continued)

Short instructions only

Function

Table 54.

Relative direct and indirect instructions and functions

Available relative direct/indirect instructions

Function

JRxx

Conditional Jump

CALLR

Call Relative

Table 55.

Instruction groups

Group

Instructions

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

−−

−

Shift and Rotates

SLL

SRL

SRA

RLC

RRC

SWAP

SLA

−

Unconditional Jump or Call

JRA

JRT

JRF

CALL

CALLR

NOP

RET

ST7LITE20F2 数据表(PDF) 114 Page - STMicroelectronics

ST7LITE20F2 数据表(HTML) 114 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载