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参数资料
型号： EFM32G222F128
厂商： Energy Micro
文件页数： 76/136页
文件大小： 0K
描述： IC MCU 32BIT 128KB FLASH 48LQFP
特色产品： EFM32 Gecko
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，POR，PWM，WDT
输入/输出数： 37
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 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： 914-1027-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
44
www.energymicro.com
if the result of an addition is greater than or equal to 2
32
if the result of a subtraction is positive or zero
as the result of an inline barrel shifter operation in a move or logical instruction.
Overflow occurs if the result of an add, subtract, or compare is greater than or equal to 2
31, or less
than –2
31.
Note
Most instructions update the status flags only if the S suffix is specified. See the instruction
descriptions for more information.
3.3.7.2 Condition code suffixes
The instructions that can be conditional have an optional condition code, shown in syntax descriptions
as {cond}. Conditional execution requires a preceding IT instruction. An instruction with a condition
code is only executed if the condition code flags in the APSR meet the specified condition. Table 3.4 (p.
44) shows the condition codes to use.
You can use conditional execution with the IT instruction to reduce the number of branch instructions
in code.
Table 3.4 (p. 44) also shows the relationship between condition code suffixes and the N, Z, C, and
V flags.
Table 3.4. Condition code suffixes
Suffix
Flags
Meaning
EQ
Z = 1
Equal
NE
Z = 0
Not equal
CS or
HS
C = 1
Higher or same, unsigned #
CC or
LO
C = 0
Lower, unsigned <
MI
N = 1
Negative
PL
N = 0
Positive or zero
VS
V = 1
Overflow
VC
V = 0
No overflow
HI
C = 1 and Z = 0
Higher, unsigned >
LS
C = 0 or Z = 1
Lower or same, unsigned #
GE
N = V
Greater than or equal, signed #
LT
N != V
Less than, signed <
GT
Z = 0 and N = V
Greater than, signed >
LE
Z = 1 and N != V
Less than or equal, signed #
AL
Can have any value
Always. This is the default when no suffix is specified.
Example 3.1 (p. 44) shows the use of a conditional instruction to find the absolute value of a number.
R0
= ABS(R1).
Example 3.1. Absolute value
MOVS
R0, R1
; R0 = R1, setting flags
IT
MI
; IT instruction for the negative condition
RSBMI
R0, R1, #0
; If negative, R0 = -R1
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相关代理商/技术参数
参数描述
EFM32G222F128G-E-QFP48R 功能描述:128K FLASH, 16K RAM, AES 制造商:silicon labs 系列:Gecko 包装:剪切带（CT） 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，POR，PWM，WDT I/O 数:37 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 4x12b，D/A 1x12b 振荡器类型:内部 工作温度:-40°C ~ 85°C（TA） 封装/外壳:48-TQFP 供应商器件封装:48-TQFP（7x7） 标准包装:1
EFM32G222F128-QFP48 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:GECKO MCU - Cut TR (SOS) 制造商:Energy Micro 功能描述:Energy Micro As EFM32G222F128-QFP48 Microcontrollers (MCU) 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 48TQFP
EFM32G222F128-QFP48T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, GECKO - Trays
EFM32G222F128-QFP48-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 48TQFP
EFM32G222F128-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 48TQFP
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