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參數資料
型號: EFM32-TG222F32-SK
廠商: Energy Micro
文件頁數: 77/136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
45
www.energymicro.com
Example 3.2 (p. 45) shows the use of conditional instructions to update the value of R4 if the signed
values R0 is greater than R1 and R2 is greater than R3.
Example 3.2. Compare and update value
CMP
R0, R1
; Compare R0 and R1, setting flags
ITT
GT
; IT instruction for the two GT conditions
CMPGT
R2, R3
; If 'greater than', compare R2 and R3, setting flags
MOVGT
R4, R5
; If still 'greater than', do R4 = R5
3.3.8 Instruction width selection
There are many instructions that can generate either a 16-bit encoding or a 32-bit encoding depending on
the operands and destination register specified. For some of these instructions, you can force a specific
instruction size by using an instruction width suffix. The .W suffix forces a 32-bit instruction encoding.
The .N suffix forces a 16-bit instruction encoding.
If you specify an instruction width suffix and the assembler cannot generate an instruction encoding of
the requested width, it generates an error.
Note
In some cases it might be necessary to specify the .W suffix, for example if the operand
is the label of an instruction or literal data, as in the case of branch instructions. This is
because the assembler might not automatically generate the right size encoding.
To use an instruction width suffix, place it immediately after the instruction mnemonic and condition
code, if any. Example 3.3 (p. 45) shows instructions with the instruction width suffix.
Example 3.3. Instruction width selection
BCS.W
label
; creates a 32-bit instruction even for a short branch
ADDS.W R0, R0, R1 ; creates a 32-bit instruction even though the same
; operation can be done by a 16-bit instruction
3.4 Memory access instructions
Table 3.5 (p. 45) shows the memory access instructions:
Table 3.5. Memory access instructions
Mnemonic
Brief description
See
ADR
Load PC-relative address
CLREX
Clear Exclusive
LDM{mode}
Load Multiple registers
LDR{type}
Load Register using immediate offset
LDR{type}
Load Register using register offset
LDR{type}T
Load Register with unprivileged access
LDR
Load Register using PC-relative address
LDREX{type}
Load Register Exclusive
POP
Pop registers from stack
PUSH
Push registers onto stack
STM{mode}
Store Multiple registers
STR{type}
Store Register using immediate offset
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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