参数资料
型号: EFM32-TG108F32-SK
厂商: Energy Micro
文件页数: 84/136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) 914-1032-2-ND - MCU 32BIT 32KB FLASH 24-QFN
其它名称: 914-1025
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
51
www.energymicro.com
3.4.5 LDR, PC#relative
Load register from memory.
3.4.5.1 Syntax
LDR{type}{cond} Rt, label
LDRD{cond} Rt, Rt2, label
; Load two words
where:
type
is one of:
B
unsigned byte, zero extend to 32 bits.
SB
signed byte, sign extend to 32 bits.
H
unsigned halfword, zero extend to 32 bits.
SH
signed halfword, sign extend to 32 bits.
#
omit, for word.
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
Rt
is the register to load or store.
Rt2
is the second register to load or store.
label
is a PC#relative expression. See Section 3.3.6 (p. 42) .
3.4.5.2 Operation
LDR
loads a register with a value from a PC-relative memory address. The memory address is specified
by a label or by an offset from the PC.
The value to load or store can be a byte, halfword, or word. For load instructions, bytes and halfwords
can either be signed or unsigned. See Section 3.3.5 (p. 42) .
label
must be within a limited range of the current instruction. Table 3.7 (p. 51) shows the possible
offsets between label and the PC.
Table 3.7. Offset ranges
Instruction type
Offset range
Word, halfword, signed halfword, byte, signed byte
#4095 to 4095
Two words
#1020 to 1020
Note
You might have to use the .W suffix to get the maximum offset range. See Section 3.3.8 (p.
3.4.5.3 Restrictions
In these instructions:
Rt can be SP or PC only for word loads
Rt2 must not be SP and must not be PC
Rt must be different from Rt2.
When Rt is PC in a word load instruction:
bit[0] of the loaded value must be 1 for correct execution, and a branch occurs to this halfword-aligned
address
相关PDF资料
PDF描述
FAM1-400-400-1.5-1A FAM1 SHEET 400X400X1.5MM W/ADH
EFM32-G890F128-SK IC MICRO KIT GECKO 112BGA
176C TRANSFORMER AUTO STEP UP/PLG IN
EFM32-G880F128-SK IC MICRO KIT GECKO 100LQFP
FAM1-400-400-1.0-1A FAM1 SHEET 400X400X1MM W/ADH
相关代理商/技术参数
参数描述
EFM32TG108F32-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 24QFN
EFM32TG108F4 功能描述:ARM微控制器 - MCU 4KB Flash 1KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
EFM32TG108F4-QFN24 制造商:Energy Micro AS 功能描述:TINY GECKO MCU - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 4KB FLASH 24QFN
EFM32TG108F4-QFN24T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, TINY GECKO - Trays
EFM32TG108F4-QFN24-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 4KB FLASH 24QFN