参数资料
型号: EFM32G842F128
厂商: Energy Micro
文件页数: 118/136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
82
www.energymicro.com
3.10.3.4 Examples
DMB
; Data Memory Barrier
3.10.4 DSB
Data Synchronization Barrier.
3.10.4.1 Syntax
DSB{cond}
where:
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
3.10.4.2 Operation
DSB
acts as a special data synchronization memory barrier. Instructions that come after the DSB, in
program order, do not execute until the DSB instruction completes. The DSB instruction completes when
all explicit memory accesses before it complete.
3.10.4.3 Condition flags
This instruction does not change the flags.
3.10.4.4 Examples
DSB ; Data Synchronisation Barrier
3.10.5 ISB
Instruction Synchronization Barrier.
3.10.5.1 Syntax
ISB{cond}
where:
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
3.10.5.2 Operation
ISB
acts as an instruction synchronization barrier. It flushes the pipeline of the processor, so that all
instructions following the ISB are fetched from cache or memory again, after the ISB instruction has
been completed.
3.10.5.3 Condition flags
This instruction does not change the flags.
3.10.5.4 Examples
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