參數(shù)資料
型號: EFM32G840F64
廠商: Energy Micro
文件頁數(shù): 11/69頁
文件大?。?/td> 0K
描述: MCU 32BIT 64KB FLASH 64-QFN
標準包裝: 1,000
系列: Gecko
核心處理器: ARM? Cortex?-M3
芯體尺寸: 32-位
速度: 32MHz
連通性: EBI/EMI,I²C,IrDA,智能卡,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復位,DMA,LCD,POR,PWM,WDT
輸入/輸出數(shù): 56
程序存儲器容量: 64KB(64K 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-VFQFN 裸露焊盤
包裝: 帶卷 (TR)
其它名稱: EFM32G840F64-QFN64
...the world's most energy friendly microcontrollers
2013-06-28 - EFM32G840FXX - d0008_Rev1.60
19
www.energymicro.com
Table 3.6. Power Management
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VBODextthr-
BOD threshold on falling
external supply voltage
1.82
1.85
V
VBODintthr-
BOD threshold on falling
internally regulated supply
voltage
1.62
1.68
V
VBODextthr+
BOD threshold on rising ex-
ternal supply voltage
1.85
V
VPORthr+
Power-on Reset (POR)
threshold on rising external
supply voltage
1.98
V
tRESETdly
Delay from reset is re-
leased until program execu-
tion starts
Applies to Power-on Reset,
Brown-out Reset and pin re-
set.
163
s
tRESET
negative pulse length to en-
sure complete reset of de-
vice
50
ns
CDECOUPLE
Voltage regulator decou-
pling capacitor.
X5R capacitor recommended.
Apply between DECOUPLE
pin and GROUND
1
F
3.7 Flash
Table 3.7. Flash
Symbol
Parameter
Condition
Min
Typ
Max
Unit
ECFLASH
Flash erase cycles before
failure
20000
cycles
TAMB<150°C
10000
h
TAMB<85°C
10
years
RETFLASH
Flash data retention
TAMB<70°C
20
years
tW_PROG
Word (32-bit) programming
time
20
s
tP_ERASE
Page erase time
20
20.4
20.8
ms
tD_ERASE
Device erase time
40
40.8
41.6
ms
IERASE
Erase current
7
1
mA
IWRITE
Write current
7
1
mA
VFLASH
Supply voltage during flash
erase and write
1.8
3.8
V
1Measured at 25°C
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