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參數資料
型號： EFM32-TG222F32-SK
廠商： Energy Micro
文件頁數： 91/136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
58
www.energymicro.com
The SBC instruction subtracts the value of Operand2 from the value in Rn. If the carry flag is clear, the
result is reduced by one.
The RSB instruction subtracts the value in Rn from the value of Operand2. This is useful because of
the wide range of options for Operand2.
Use ADC and SBC to synthesize multiword arithmetic, see Section 3.5.1.6 (p. 59) .
Note
ADDW
is equivalent to the ADD syntax that uses the imm12 operand. SUBW is equivalent to
the SUB syntax that uses the imm12 operand.
3.5.1.3 Restrictions
In these instructions:
Operand2 must not be SP and must not be PC
Rd can be SP only in ADD and SUB, and only with the additional restrictions:
Rn must also be SP
any shift in Operand2 must be limited to a maximum of 3 bits using LSL
Rn can be SP only in ADD and SUB
Rd can be PC only in the ADD{cond} PC, PC, Rm instruction where:
you must not specify the S suffix
Rm must not be PC and must not be SP
if the instruction is conditional, it must be the last instruction in the IT block
with the exception of the ADD{cond} PC, PC, Rm instruction, Rn can be PC only in ADD and SUB,
and only with the additional restrictions:
you must not specify the S suffix
the second operand must be a constant in the range 0 to 4095.
Note
When using the PC for an addition or a subtraction, bits[1:0] of the PC are rounded
to b00 before performing the calculation, making the base address for the calculation
word-aligned.
If you want to generate the address of an instruction, you have to adjust the constant
based on the value of the PC. ARM recommends that you use the ADR instruction
instead of ADD or SUB with Rn equal to the PC, because your assembler automatically
calculates the correct constant for the ADR instruction.
When Rd is PC in the ADD{cond} PC, PC, Rm instruction:
bit[0] of the value written to the PC is ignored
a branch occurs to the address created by forcing bit[0] of that value to 0.
3.5.1.4 Condition flags
If S is specified, these instructions update the N, Z, C and V flags according to the result.
3.5.1.5 Examples
ADD
R2, R1, R3
SUBS
R8, R6, #240
; Sets the flags on the result
RSB
R4, R4, #1280
; Subtracts contents of R4 from 1280
ADCHI
R11, R0, R3
; Only executed if C flag set and Z
; flag clear
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
EFM32TG222F32-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 48TQFP
EFM32TG222F8 功能描述:ARM微控制器 - MCU 8KB Flash 2KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數據總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數據 RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風格:SMD/SMT
EFM32TG222F8-QFP48 制造商:Energy Micro AS 功能描述:TINY GECKO MCU - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 8KB FLASH 48TQFP
EFM32TG222F8-QFP48T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, TINY GECKO - Trays
EFM32TG222F8-QFP48-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 8KB FLASH 48TQFP
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