參數(shù)資料
型號(hào)： EFM32-TG-STK3300
廠商： Energy Micro
文件頁數(shù)： 106/136頁
文件大?。?/td> 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
71
www.energymicro.com
; saturate it as a signed 16-bit value and
; write it back to R7
USATNE
R0, #7, R5
; Conditionally saturate value in R5 as an
; unsigned 7 bit value and write it to R0
3.8 Bitfield instructions
Table 3.10 (p. 71) shows the instructions that operate on adjacent sets of bits in registers or bitfields:
Table 3.10. Packing and unpacking instructions
Mnemonic
Brief description
See
BFC
Bit Field Clear
BFI
Bit Field Insert
SBFX
Signed Bit Field Extract
SXTB
Sign extend a byte
SXTH
Sign extend a halfword
UBFX
Unsigned Bit Field Extract
UXTB
Zero extend a byte
UXTH
Zero extend a halfword
3.8.1 BFC and BFI
Bit Field Clear and Bit Field Insert.
3.8.1.1 Syntax
BFC{cond} Rd, #lsb, #width
BFI{cond} Rd, Rn, #lsb, #width
where:
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
Rd
is the destination register.
Rn
is the source register.
lsb
is the position of the least significant bit of the bitfield. lsb must be in the range 0 to 31.
width
is the width of the bitfield and must be in the range 1 to 32#lsb.
3.8.1.2 Operation
BFC
clears a bitfield in a register. It clears width bits in Rd, starting at the low bit position lsb. Other
bits in Rd are unchanged.
BFI
copies a bitfield into one register from another register. It replaces width bits in Rd starting at the
low bit position lsb, with width bits from Rn starting at bit[0]. Other bits in Rd are unchanged.
3.8.1.3 Restrictions
Do not use SP and do not use PC.
3.8.1.4 Condition flags
These instructions do not affect the flags.
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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
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