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参数资料
型号： EFM32-TG108F32-SK
厂商： Energy Micro
文件页数： 77/136页
文件大小： 0K
描述： IC MICRO KIT GECKO 24QFN
标准包装： 1
系列： Tiny Gecko
套件类型： 微控制器
值： 2 件 - 闪存 - 32KB
包装： 纸板盒
安装类型： 表面贴装
包括封装： 24-QFN
工具箱内容： (2) 914-1032-2-ND - MCU 32BIT 32KB FLASH 24-QFN
其它名称： 914-1025
...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
Section 3.4.1 (p. 46)
CLREX
Clear Exclusive
Section 3.4.9 (p. 56)
LDM{mode}
Load Multiple registers
Section 3.4.6 (p. 52)
LDR{type}
Load Register using immediate offset
Section 3.4.2 (p. 46)
LDR{type}
Load Register using register offset
Section 3.4.3 (p. 48)
LDR{type}T
Load Register with unprivileged access
Section 3.4.4 (p. 50)
LDR
Load Register using PC-relative address
Section 3.4.5 (p. 51)
LDREX{type}
Load Register Exclusive
Section 3.4.8 (p. 54)
POP
Pop registers from stack
Section 3.4.7 (p. 53)
PUSH
Push registers onto stack
Section 3.4.7 (p. 53)
STM{mode}
Store Multiple registers
Section 3.4.6 (p. 52)
STR{type}
Store Register using immediate offset
Section 3.4.2 (p. 46)
相关PDF资料
PDF描述
FAM1-400-400-1.5-1A FAM1 SHEET 400X400X1.5MM W/ADH
EFM32-G890F128-SK IC MICRO KIT GECKO 112BGA
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相关代理商/技术参数
参数描述
EFM32TG108F32-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 24QFN
EFM32TG108F4 功能描述:ARM微控制器 - MCU 4KB Flash 1KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
EFM32TG108F4-QFN24 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 4KB FLASH 24QFN
EFM32TG108F4-QFN24T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, TINY GECKO - Trays
EFM32TG108F4-QFN24-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 4KB FLASH 24QFN
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