參數(shù)資料
型號: EFM32G842F128
廠商: Energy Micro
文件頁數(shù): 32/136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(shè)備: 欠壓檢測/復(fù)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
127
www.energymicro.com
Should Be Zero (SBZ)
Write as 0, or all 0s for bit fields, by software. Writing as 1 produces
Unpredictable results.
Should
Be
Zero
or
Preserved (SBZP)
Write as 0, or all 0s for bit fields, by software, or preserved by writing the
same value back that has been previously read from the same field on the
same processor.
Thread-safe
In a multi-tasking environment, thread-safe functions use safeguard
mechanisms when accessing shared resources, to ensure correct operation
without the risk of shared access conflicts.
Thumb instruction
One or two halfwords that specify an operation for a processor to perform.
Thumb instructions must be halfword-aligned.
Unaligned
A data item stored at an address that is not divisible by the number of bytes
that defines the data size is said to be unaligned. For example, a word stored
at an address that is not divisible by four.
Undefined
Indicates an instruction that generates an Undefined instruction exception.
Unpredictable (UNP)
You cannot rely on the behavior. Unpredictable behavior must not represent
security holes. Unpredictable behavior must not halt or hang the processor,
or any parts of the system.
Warm reset
Also known as a core reset. Initializes the majority of the processor excluding
the debug controller and debug logic. This type of reset is useful if you are
using the debugging features of a processor.
WA
See Write-allocate.
WB
See Write-back.
Word
A 32-bit data item.
Write
Writes are defined as operations that have the semantics of a store. Writes
include the Thumb instructions STM, STR, STRH, STRB, and PUSH.
Write-allocate (WA)
In a write-allocate cache, a cache miss on storing data causes a cache line
to be allocated into the cache.
Write-back (WB)
In a write-back cache, data is only written to main memory when it is forced
out of the cache on line replacement following a cache miss. Otherwise,
writes by the processor only update the cache. This is also known as
copyback.
Write buffer
A block of high-speed memory, arranged as a FIFO buffer, between the
data cache and main memory, whose purpose is to optimize stores to main
memory.
Write-through (WT)
In a write-through cache, data is written to main memory at the same time
as the cache is updated.
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EFM32G842F128G-E-QFP64 功能描述:128K FLASH, 16K RAM, 4X22 LCD, A 制造商:silicon labs 系列:Gecko 包裝:托盤 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/復(fù)位,DMA,LCD,POR,PWM,WDT I/O 數(shù):53 程序存儲容量:128KB(128K x 8) 程序存儲器類型: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 2x12b 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) 標準包裝:160
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