參數(shù)資料
型號: EFM32LG942F256
廠商: Energy Micro
文件頁數(shù): 39/68頁
文件大?。?/td> 0K
描述: IC MCU 32BIT 256KB FLASH QFP64
標準包裝: 1,000
系列: Leopard Gecko
核心處理器: ARM? Cortex?-M4
芯體尺寸: 32-位
速度: 48MHz
連通性: I²C,IrDA,智能卡,SPI,UART/USART,USB
外圍設(shè)備: 欠壓檢測/復(fù)位,DMA,LCD,POR,PWM,WDT
輸入/輸出數(shù): 50
程序存儲器容量: 256KB(256K x 8)
程序存儲器類型: 閃存
RAM 容量: 32K x 8
電壓 - 電源 (Vcc/Vdd): 1.85 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)
Preliminary
...the world's most energy friendly microcontrollers
2013-06-28 - EFM32LG942FXX - d0121_Rev1.10
44
www.energymicro.com
3.15 LCD
Table 3.19. LCD
Symbol
Parameter
Condition
Min
Typ
Max
Unit
fLCDFR
Frame rate
30
200
Hz
NUMSEG
Number of segments sup-
ported
16×8
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. 44) . ILCDBOOST is zero if internal boost is off.
Total LCD Current Based on Operational Mode and Internal Boost
ILCDTOTAL = ILCD + ILCDBOOST
(3.3)
3.16 Digital Peripherals
Table 3.20. 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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EFM32LG942F64 功能描述:ARM微控制器 - MCU 64KB FL 32KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT