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EFM32WG980 Datasheet(PDF) 52 Page - List of Unclassifed Manufacturers |
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EFM32WG980 Datasheet(HTML) 52 Page - List of Unclassifed Manufacturers |
52 / 80 page Preliminary ...the world's most energy friendly microcontrollers 2013-05-06 - EFM32WG980FXX - d0202_Rev1.10 52 www.energymicro.com 3.15 LCD Table 3.20. LCD Symbol Parameter Condition Min Typ Max Unit fLCDFR Frame rate 30 200 Hz NUMSEG Number of segments sup- ported 34×8 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 µA ILCDBOOST Steady state Current contri- bution of internal boost. Internal voltage boost on, boosting from 2.2 V to 3.0 V. 8.4 µA 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. 52) . 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 3.21. Digital Peripherals Symbol Parameter Condition Min Typ Max Unit IUSART USART current USART idle current, clock en- abled 7.5 µA/ MHz IUART UART current UART idle current, clock en- abled 5.63 µA/ MHz |
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