參數(shù)資料
型號(hào): EFM32G842F32
廠商: Energy Micro
文件頁數(shù): 41/67頁
文件大小: 0K
描述: IC MCU 32BIT 32KB FLASH LQFP64
標(biāo)準(zhǔn)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: 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(chǔ)器容量: 32KB(32K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 8K 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: 帶卷 (TR)
...the world's most energy friendly microcontrollers
2013-06-28 - EFM32G842FXX - d0070_Rev1.60
46
www.energymicro.com
3.14 LCD
Table 3.18. LCD
Symbol
Parameter
Condition
Min
Typ
Max
Unit
fLCDFR
Frame rate
30
200
Hz
NUMSEG
Number of segments sup-
ported
4×40
seg
VLCD
LCD supply voltage range
Internal boost circuit enabled
2.0
3.8
V
Display disconnected, stat-
ic mode, framerate 32 Hz, all
segments on.
250
nA
ILCD
Steady state current con-
sumption.
Display disconnected,
quadruplex mode, framer-
ate 32 Hz, all segments on,
bias mode to ONETHIRD in
LCD_DISPCTRL register.
550
nA
Internal voltage boost off
0
A
ILCDBOOST
Steady state Current contri-
bution of internal boost.
Internal voltage boost on,
boosting from 2.2 V to 3.0 V.
8.4
A
VBLEV of LCD_DISPCTRL
register to LEVEL0
3.0
V
VBLEV of LCD_DISPCTRL
register to LEVEL1
3.08
V
VBLEV of LCD_DISPCTRL
register to LEVEL2
3.17
V
VBLEV of LCD_DISPCTRL
register to LEVEL3
3.26
V
VBLEV of LCD_DISPCTRL
register to LEVEL4
3.34
V
VBLEV of LCD_DISPCTRL
register to LEVEL5
3.43
V
VBLEV of LCD_DISPCTRL
register to LEVEL6
3.52
V
VBOOST
Boost Voltage
VBLEV of LCD_DISPCTRL
register to LEVEL7
3.6
V
The total LCD current is given by Equation 3.3 (p. 46) . ILCDBOOST is zero if internal boost is off.
Total LCD Current Based on Operational Mode and Internal Boost
ILCDTOTAL = ILCD + ILCDBOOST
(3.3)
3.15 Digital Peripherals
Table 3.19. Digital Peripherals
Symbol
Parameter
Condition
Min
Typ
Max
Unit
IUSART
USART current
USART idle current, clock en-
abled
7.5
A/
MHz
IUART
UART current
UART idle current, clock en-
abled
5.63
A/
MHz
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