参数资料
型号: EFM32TG822F32
厂商: Energy Micro
文件页数: 99/136页
文件大小: 0K
描述: IC MCU 32BIT 32KB FLASH 48LQFP
特色产品: EFM32 Tiny Gecko
标准包装: 1
系列: Tiny Gecko
核心处理器: ARM? Cortex?-M3
芯体尺寸: 32-位
速度: 32MHz
连通性: I²C,IrDA,智能卡,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,I²S,LCD,POR,PWM,WDT
输入/输出数: 37
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 4K x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 3.8 V
数据转换器: A/D 4x12b,D/A 1x12b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 48-TQFP
包装: 标准包装
其它名称: 914-1031-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
65
www.energymicro.com
where:
op
is any of:
REV
Reverse byte order in a word.
REV16
Reverse byte order in each halfword independently.
REVSH
Reverse byte order in the bottom halfword, and sign extend to 32 bits.
RBIT
Reverse the bit order in a 32#bit word.
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
Rd
is the destination register.
Rn
is the register holding the operand.
3.5.8.2 Operation
Use these instructions to change endianness of data:
REV
converts 32#bit big#endian data into little#endian data or 32#bit little#endian data into
big#endian data.
REV16
converts 16#bit big#endian data into little#endian data or 16#bit little#endian data into
big#endian data.
REVSH
converts either:
16#bit signed big#endian data into 32#bit signed little#endian data
16#bit signed little#endian data into 32#bit signed big#endian data.
3.5.8.3 Restrictions
Do not use SP and do not use PC.
3.5.8.4 Condition flags
These instructions do not change the flags.
3.5.8.5 Examples
REV
R3, R7
; Reverse byte order of value in R7 and write it to R3
REV16
R0, R0
; Reverse byte order of each 16-bit halfword in R0
REVSH
R0, R5
; Reverse Signed Halfword
REVHS
R3, R7
; Reverse with Higher or Same condition
RBIT
R7, R8
; Reverse bit order of value in R8 and write the result to R7
3.5.9 TST and TEQ
Test bits and Test Equivalence.
3.5.9.1 Syntax
TST{cond} Rn, Operand2
TEQ{cond} Rn, Operand2
where:
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
Rn
is the register holding the first operand.
Operand2
is a flexible second operand. See Section 3.3.3 (p. 38) for details of the options.
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