參數(shù)資料
型號: EFM32G842F128
廠商: Energy Micro
文件頁數(shù): 118/136頁
文件大?。?/td> 0K
描述: IC MCU 32BIT 128KB FLASH 64LQFP
標準包裝: 1
系列: Gecko
核心處理器: ARM? Cortex?-M3
芯體尺寸: 32-位
速度: 32MHz
連通性: I²C,IrDA,智能卡,SPI,UART/USART
外圍設備: 欠壓檢測/復位,DMA,LCD,POR,PWM,WDT
輸入/輸出數(shù): 53
程序存儲器容量: 128KB(128K x 8)
程序存儲器類型: 閃存
RAM 容量: 16K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 3.8 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x12b,D/A 2x12b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-TQFP
包裝: 標準包裝
其它名稱: 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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