参数资料
型号: EFM32TG210F32
厂商: Energy Micro
文件页数: 109/136页
文件大小: 0K
描述: MCU 32BIT 32KB FLASH 32-QFN
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: EBI/EMI,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: 24
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: 32-VQFN 裸露焊盘
包装: 标准包装
其它名称: 914-1034-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
74
www.energymicro.com
Mnemonic
Brief description
See
BX
Branch indirect
CBNZ
Compare and Branch if Non Zero
CBZ
Compare and Branch if Non Zero
IT
If#Then
TBB
Table Branch Byte
TBH
Table Branch Halfword
3.9.1 B, BL, BX, and BLX
Branch instructions.
3.9.1.1 Syntax
B{cond} label
BL{cond} label
BX{cond} Rm
BLX{cond} Rm
where:
B
is branch (immediate).
BL
is branch with link (immediate).
BX
is branch indirect (register).
BLX
is branch indirect with link (register).
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
label
is a PC#relative expression. See Section 3.3.6 (p. 42) .
Rm
is a register that indicates an address to branch to. Bit[0] of the value in Rm must be 1, but the
address to branch to is created by changing bit[0] to 0.
3.9.1.2 Operation
All these instructions cause a branch to label, or to the address indicated in Rm. In addition:
The BL and BLX instructions write the address of the next instruction to LR (the link register, R14).
The BX and BLX instructions cause a UsageFault exception if bit[0] of Rm is 0.
Bcond
label
is the only conditional instruction that can be either inside or outside an IT block. All
other branch instructions must be conditional inside an IT block, and must be unconditional outside the
IT block, see Section 3.9.3 (p. 76) .
Table 3.12 (p. 74) shows the ranges for the various branch instructions.
Table 3.12. Branch ranges
Instruction
Branch range
B label
#16 MB to +16 MB
Bcond label
(outside IT
block)
#1 MB to +1 MB
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