参数资料
型号: EFM32-TG110F32-SK
厂商: Energy Micro
文件页数: 109/136页
文件大小: 0K
描述: IC MICRO KIT GECKO 24QFN
标准包装: 1
系列: Tiny Gecko
套件类型: 微控制器
值: 2 件 - 闪存 - 32KB
包装: 纸板盒
安装类型: 表面贴装
包括封装: 24-QFN
工具箱内容: (2) 914-1033-2-ND - MCU 32BIT 32KB FLASH 24-QFN
其它名称: 914-1022
...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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