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参数资料
型号： EFM32-TG-STK3300
厂商： Energy Micro
文件页数： 85/136页
文件大小： 0K
描述： KIT STARTER EFM32 GECKO
特色产品： EFM32 Tiny Gecko
标准包装： 1
系列： EFM®32
类型： MCU
适用于相关产品： EFM32-TGXXX
所含物品： 板，线缆，CD 和文档
其它名称： 914-1018
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
52
www.energymicro.com
if the instruction is conditional, it must be the last instruction in the IT block.
3.4.5.4 Condition flags
These instructions do not change the flags.
3.4.5.5 Examples
LDR
R0, LookUpTable
; Load R0 with a word of data from an address
; labelled as LookUpTable
LDRSB
R7, localdata
; Load a byte value from an address labelled
; as localdata, sign extend it to a word
; value, and put it in R7
3.4.6 LDM and STM
Load and Store Multiple registers.
3.4.6.1 Syntax
op{addr_mode}{cond} Rn{!}, reglist
where:
op
is one of:
LDM
Load Multiple registers.
STM
Store Multiple registers.
addr_mode
is any one of the following:
IA
Increment address After each access. This is the default.
DB
Decrement address Before each access.
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
Rn
is the register on which the memory addresses are based.
!
is an optional writeback suffix. If ! is present the final address, that is loaded from or
stored to, is written back into Rn.
reglist
is a list of one or more registers to be loaded or stored, enclosed in braces. It can contain
register ranges. It must be comma separated if it contains more than one register or
register range, see Section 3.4.6.5 (p. 53) .
LDM
and LDMFD are synonyms for LDMIA. LDMFD refers to its use for popping data from Full Descending
stacks.
LDMEA
is a synonym for LDMDB, and refers to its use for popping data from Empty Ascending stacks.
STM
and STMEA are synonyms for STMIA. STMEA refers to its use for pushing data onto Empty Ascending
stacks.
STMFD
is s synonym for STMDB, and refers to its use for pushing data onto Full Descending stacks
3.4.6.2 Operation
LDM
instructions load the registers in reglist with word values from memory addresses based on Rn.
STM
instructions store the word values in the registers in reglist to memory addresses based on Rn.
For LDM, LDMIA, LDMFD, STM, STMIA, and STMEA the memory addresses used for the accesses are
at 4-byte intervals ranging from Rn to Rn + 4 * (n-1), where n is the number of registers in reglist.
The accesses happens in order of increasing register numbers, with the lowest numbered register using
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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 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
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
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