參數(shù)資料
型號(hào): MC68HC705C9ACFN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: Microcontrollers
中文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 120/160頁
文件大小: 2076K
代理商: MC68HC705C9ACFN
Instruction Set
Advance Information
MC68HC705C9A — Rev. 4.0
120
Instruction Set
MOTOROLA
11.4.2 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 11-2. 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
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