參數(shù)資料
型號(hào): MC68HSC05J1A
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 83/128頁
文件大小: 1620K
代理商: MC68HSC05J1A
Instruction Set
Instruction Types
MC68HC05J1A — Rev. 3.0
Technical Data
MOTOROLA
Instruction Set
83
9.4.2 Read-Modify-Write Instructions
These instructions read a memory location or a register, modify its
contents, and write the modified value back to the memory location or to
the register.
NOTE:
Do not use read-modify-write operations on write-only registers.
Table 9-2. Read-Modify-Write Instructions
Instruction
Mnemonic
Arithmetic shift left (same as LSL)
ASL
Arithmetic shift right
ASR
Bit clear
BCLR
(1)
1. Unlike other read-modify-write instructions, BCLR and BSET use
only direct addressing.
2. TST is an exception to the read-modify-write sequence because it
does not write a replacement value.
Bit set
BSET
(1)
Clear register
CLR
Complement (one’s complement)
COM
Decrement
DEC
Increment
INC
Logical shift left (same as ASL)
LSL
Logical shift right
LSR
Negate (two’s complement)
NEG
Rotate left through carry bit
ROL
Rotate right through carry bit
ROR
Test for negative or zero
TST
(2)
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
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