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參數資料
型號: EFM32-TG222F32-SK
廠商: Energy Micro
文件頁數: 95/136頁
文件大小: 0K
描述: IC MICRO KIT GECKO 48LQFP
標準包裝: 1
系列: Tiny Gecko
套件類型: 微控制器
值: 2 件 - 閃存 - 32KB
包裝: 紙板盒
安裝類型: 表面貼裝
包括封裝: 48-LQFP
其它名稱: 914-1021
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
61
www.energymicro.com
RRX
moves the bits in register Rm to the right by 1.
In all these instructions, the result is written to Rd, but the value in register Rm remains unchanged. For
details on what result is generated by the different instructions, see Section 3.3.4 (p. 39) .
3.5.3.3 Restrictions
Do not use SP and do not use PC.
3.5.3.4 Condition flags
If S is specified:
these instructions update the N and Z flags according to the result
the C flag is updated to the last bit shifted out, except when the shift length is 0, see Section 3.3.4 (p.
3.5.3.5 Examples
ASR
R7, R8, #9
; Arithmetic shift right by 9 bits
LSLS
R1, R2, #3
; Logical shift left by 3 bits with flag update
LSR
R4, R5, #6
; Logical shift right by 6 bits
ROR
R4, R5, R6
; Rotate right by the value in the bottom byte of R6
RRX
R4, R5
; Rotate right with extend
3.5.4 CLZ
Count Leading Zeros.
3.5.4.1 Syntax
CLZ{cond} Rd, Rm
where:
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
Rd
is the destination register.
Rm
is the operand register.
3.5.4.2 Operation
The CLZ instruction counts the number of leading zeros in the value in Rm and returns the result in Rd.
The result value is 32 if no bits are set in the source register, and zero if bit[31] is set.
3.5.4.3 Restrictions
Do not use SP and do not use PC.
3.5.4.4 Condition flags
This instruction does not change the flags.
3.5.4.5 Examples
CLZ
R4,R9
CLZNE
R2,R3
相關PDF資料
PDF描述
EFM32-TG230F32-SK IC MICRO KIT GECKO 64QFN
EFM32-TG210F32-SK IC MICRO KIT GECKO 32QFN
1267 X 6" TAPE ALUMINUM FOIL 6" X 1FT
7810 0.25MM ECAP COND PAD .25MM 7.7" X 10"
7810 0.20MM ECAP COND PAD .20MM 7.7" X 10"
相關代理商/技術參數
參數描述
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