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参数资料
型号： EFM32G842F128
厂商： Energy Micro
文件页数： 70/136页
文件大小： 0K
描述： IC MCU 32BIT 128KB FLASH 64LQFP
标准包装： 1
系列： 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，LCD，POR，PWM，WDT
输入/输出数： 53
程序存储器容量： 128KB（128K x 8）
程序存储器类型： 闪存
RAM 容量： 16K x 8
电压 - 电源 (Vcc/Vdd)： 1.8 V ~ 3.8 V
数据转换器： A/D 8x12b，D/A 2x12b
振荡器型： 外部
工作温度： -40°C ~ 85°C
封装/外壳： 64-TQFP
包装： 标准包装
其它名称： 914-1028-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
39
www.energymicro.com
#constant
where constant can be:
any constant that can be produced by shifting an 8#bit value left by any number of bits within a 32#bit
word
any constant of the form 0x00XY00XY
any constant of the form 0xXY00XY00
any constant of the form 0xXYXYXYXY.
Note
In the constants shown above, X and Y are hexadecimal digits.
In addition, in a small number of instructions, constant can take a wider range of values. These are
described in the individual instruction descriptions.
When an Operand2 constant is used with the instructions MOVS, MVNS, ANDS, ORRS, ORNS, EORS, BICS,
TEQ
or TST, the carry flag is updated to bit[31] of the constant, if the constant is greater than 255 and
can be produced by shifting an 8-bit value. These instructions do not affect the carry flag if Operand2
is any other constant.
3.3.3.1.1 Instruction substitution
Your assembler might be able to produce an equivalent instruction in cases where you specify a constant
that is not permitted. For example, an assembler might assemble the instruction CMP Rd, #0xFFFFFFFE
as the equivalent instruction CMN Rd, #0x2.
3.3.3.2 Register with optional shift
You specify an Operand2 register in the form:
Rm {, shift}
where:
Rm
is the register holding the data for the second operand.
shift
is an optional shift to be applied to Rm. It can be one of:
ASR #n
arithmetic shift right n bits, 1 # n # 32.
LSL #n
logical shift left n bits, 1 # n # 31.
LSR #n
logical shift right n bits, 1 # n # 32.
ROR #n
rotate right n bits, 1 # n # 31.
RRX
rotate right one bit, with extend.
-
if omitted, no shift occurs, equivalent to LSL #0.
If you omit the shift, or specify LSL #0, the instruction uses the value in Rm.
If you specify a shift, the shift is applied to the value in Rm, and the resulting 32-bit value is used by the
instruction. However, the contents in the register Rm remains unchanged. Specifying a register with shift
also updates the carry flag when used with certain instructions. For information on the shift operations
and how they affect the carry flag, see Section 3.3.4 (p. 39)
3.3.4 Shift Operations
Register shift operations move the bits in a register left or right by a specified number of bits, the shift
length. Register shift can be performed:
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相关代理商/技术参数
参数描述
EFM32G842F128G-E-QFP64 功能描述:128K FLASH, 16K RAM, 4X22 LCD, A 制造商:silicon labs 系列:Gecko 包装:托盘 零件状态:在售 核心处理器:ARM? Cortex?-M3 核心尺寸:32-位 速度:32MHz 连接性:I2C，IrDA，智能卡，SPI，UART/USART 外设:欠压检测/复位，DMA，LCD，POR，PWM，WDT I/O 数:53 程序存储容量:128KB（128K x 8） 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:16K x 8 电压 - 电源（Vcc/Vdd）:1.98 V ~ 3.8 V 数据转换器:A/D 8x12b，D/A 2x12b 振荡器类型:内部 工作温度:-40°C ~ 85°C（TA） 封装/外壳:64-TQFP 供应商器件封装:64-TQFP（10x10） 标准包装:160
EFM32G842F128-QFP64 制造商:Energy Micro AS 功能描述:GECKO MCU - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64TQFP
EFM32G842F128-QFP64T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, GECKO - Trays
EFM32G842F128-QFP64-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64TQFP
EFM32G842F128-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64TQFP
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