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8051微控制器指令周期
| Date: | 2022-04-04 00:00:00 |
| Description: | 8051微控制器指令周期汇总。 |
| Keywords: | mcs-51, 8051, 指令周期 |
| Category: | engineering_technology/electronic_electrical/mcu |
| Tag: | MCS-51, mcu |
| Link: | https://www.diewuxi.com/blog/article/71.html |
Changelog
- 2022-04-04
- Done
数据传输指令
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inst type transfer type machine duration
--------- ------------------------------------------- ----------------
XRAM A <--> @R/DPTR 2
ROM A <--> @A+PC/@A+DPTR 2
STACK 2
exchange A <--> R/@R/direct 1
RAM mem <--> mem 2
mem <--> R/@R 2
mem/DPTR <--> direct 2
A <--> mem 1
A <--> R/@R 1
A/R/@R <--> direct 1
--------------------------------------------------------------------------------
算术运算
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inst type transfer type machine duration
--------- ------------------------------------------- ----------------
ADD A <--> R/@R/mem/direct 1
ADDC A <--> R/@R/mem/direct 1
INC A/R/@R/mem 1
DPTR 2
SUBB A <--> R/@R/mem/direct 1
DEC A/R/@R/mem 1
DA A 1
MUL A B 4
DIV A B 4
--------------------------------------------------------------------------------
逻辑运算
--------------------------------------------------------------------------------
inst type transfer type machine duration
--------- ------------------------------------------- ----------------
ANL A <--> mem 1
A <-- R/@R/direct 1
mem <-- direct 2
ORL A <--> mem 1
A <-- R/@R/direct 1
mem <-- direct 2
XRL A <--> mem 1
A <-- R/@R/direct 1
mem <-- direct 2
CLR A 1
CPL A 1
RL A 1
RR A 1
RLC A 1
RRC A 1
--------------------------------------------------------------------------------
流程控制
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inst type transfer type machine duration
--------- ------------------------------------------- ----------------
LJMP 2
AJMP 2
SJMP 2
JMP 2
JZ 2
JNZ 2
CJNE A <-- mem/direct 2
R/@R <-- direct 2
DJNZ R/mem 2
ACALL 2
LCALL 2
RET 2
RETI 2
NOP 1
--------------------------------------------------------------------------------
位操作
--------------------------------------------------------------------------------
inst type transfer type machine duration
--------- ------------------------------------------- ----------------
MOV C <-- bit 1
SET C/bit 1
CPL C/bit 1
ANL C/bit 2
ORL C/bit 2
JCL 2
JNL 2
JB bit 2
JNB bit 2
JBC bit 2
--------------------------------------------------------------------------------
Last modified: 2022-04-04
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