參數(shù)資料
型號(hào): EFM32-TG-STK3300
廠商: Energy Micro
文件頁數(shù): 77/136頁
文件大小: 0K
描述: KIT STARTER EFM32 GECKO
特色產(chǎn)品: EFM32 Tiny Gecko
標(biāo)準(zhǔn)包裝: 1
系列: EFM®32
類型: MCU
適用于相關(guān)產(chǎn)品: EFM32-TGXXX
所含物品: 板,線纜,CD 和文檔
其它名稱: 914-1018
...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(guān)PDF資料
PDF描述
HSC08DRYH-S13 CONN EDGECARD 16POS .100 EXTEND
TH3D336M016A0600 CAP TANT 33UF 16V 20% 2917
GBA18DTKT-S288 CONN EDGECARD 36POS .125 EXTEND
RSM03DRKN CONN EDGECARD 6POS DIP .156 SLD
GBA22DRMI-S288 CONN EDGECARD 44POS .125 EXTEND
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EFM32TG-STK3300 制造商:Energy Micro AS 功能描述:STARTER KIT STK3300 TINY GEC 制造商:Energy Micro AS 功能描述:STARTER KIT, STK3300, TINY GECKO; Silicon Manufacturer:Energy Micro; Core Architecture:ARM; Core Sub-Architecture:Cortex-M3; Silicon Core Number:EFM32TG840; Silicon Family Name:EFM32; Kit Contents:Starter Kit EFM32TG840; SVHC:No SVHC;RoHS Compliant: Yes
EFM32WG230F128 功能描述:ARM微控制器 - MCU 128kb flash 32kb RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)器大小:256 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
EFM32WG230F128-QFN64 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, WONDER GECKO - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64QFN
EFM32WG230F128-QFN64T 制造商:Energy Micro AS 功能描述:WONDER GECKO 32 BIT ARM CORTEX MCU - Trays
EFM32WG230F128-QFN64-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64QFN