參數(shù)資料
型號(hào)： EFM32G232F128
廠商： Energy Micro
文件頁數(shù)： 50/136頁
文件大?。?/td> 0K
描述： IC MCU 32BIT 128KB FLASH 64LQFP
標(biāo)準(zhǔn)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(shè)備： 欠壓檢測(cè)/復(fù)位，DMA，POR，PWM，WDT
輸入/輸出數(shù)： 53
程序存儲(chǔ)器容量： 128KB（128K x 8）
程序存儲(chǔ)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 1x12b
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 64-TQFP
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： 914-1026-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
20
www.energymicro.com
Bits[31:1] of the alias word have no effect on the bit-band bit. Writing 0x01 has the same effect as writing
0xFF
. Writing 0x00 has the same effect as writing 0x0E.
Reading a word in the alias region:
0x00000000 indicates that the targeted bit in the bit-band region is set to zero
0x00000001 indicates that the targeted bit in the bit-band region is set to 1
2.2.5.2 Directly accessing a bit-band region
Section 2.2.3 (p. 16) describes the behavior of direct byte, halfword, or word accesses to the bit-
band regions.
2.2.6 Memory endianness
The processor views memory as a linear collection of bytes numbered in ascending order from
zero. For example, bytes 0-3 hold the first stored word, and bytes 4-7 hold the second stored word.
Section 2.2.6.1 (p. 20) describes how words of data are stored in memory.
2.2.6.1 Little-endian format
The EFM32 uses a little-endian format, in which the processor stores the least significant byte of a word
at the lowest-numbered byte, and the most significant byte at the highest-numbered byte. For example:
Mem ory
Regist er
Address A
A+ 1
lsbyt e
m sbyt e
A+ 2
A+ 3
0
7
B0
B1
B3
B2
31
2423
1615
8 7
0
B0
B1
B2
B3
2.2.7 Synchronization primitives
The Cortex-M3 instruction set includes pairs of synchronization primitives. These provide a non-blocking
mechanism that a thread or process can use to obtain exclusive access to a memory location. Software
can use them to perform a guaranteed read-modify-write memory update sequence, or for a semaphore
mechanism.
A pair of synchronization primitives comprises:
A Load-Exclusive instruction
Used to read the value of a memory location, requesting exclusive
access to that location.
A Store-Exclusive instruction
Used to attempt to write to the same memory location, returning a
status bit to a register. If this bit is:
0
it indicates that the thread or process gained exclusive access to
the memory, and the write succeeds,
1
it indicates that the thread or process did not gain exclusive
access to the memory, and no write is performed,
The pairs of Load-Exclusive and Store-Exclusive instructions are:
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EFM32G232F128G-E-QFP64R 功能描述:128K FLASH, 16K RAM, AES 制造商:silicon labs 系列:Gecko 包裝:剪切帶（CT） 零件狀態(tài):在售 核心處理器:ARM? Cortex?-M3 核心尺寸:32-位 速度:32MHz 連接性:I2C，IrDA，智能卡，SPI，UART/USART 外設(shè):欠壓檢測(cè)/復(fù)位，DMA，POR，PWM，WDT I/O 數(shù):53 程序存儲(chǔ)容量:128KB（128K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 容量:- RAM 容量:16K x 8 電壓 - 電源（Vcc/Vdd）:1.98 V ~ 3.8 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x12b，D/A 1x12b 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:64-TQFP 供應(yīng)商器件封裝:64-TQFP（10x10） 標(biāo)準(zhǔn)包裝:1
EFM32G232F128-QFP64 制造商:Energy Micro AS 功能描述:GECKO MCU - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64TQFP
EFM32G232F128-QFP64T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, GECKO - Trays
EFM32G232F128-QFP64-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64TQFP
EFM32G232F128-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 128KB FLASH 64TQFP
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