EFM32G200F64 Energy Micro, EFM32G200F64 Datasheet - Page 424

• Manufacturer Part Number: EFM32G200F64
• Description: MCU 32BIT 64KB FLASH 32-QFN
• Manufacturer: Energy Micro
• Series: Geckor

Specifications of EFM32G200F64

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IrDA, SmartCard, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.8 V
• Data Converters: A/D 4x12b, D/A 1x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad
• Processor Series: EFM32G200
• Core: ARM Cortex-M3
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, UART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 2
• Operating Supply Voltage: 1.8 V to 3.8 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

29.3.4 LCD Contrast
2010-09-06 - d0001_Rev1.00
Figure 29.42. LCD 1/3 Bias and Quadruplex Multiplexing- LCD_SEG0-LCD_COM3
Different LCD panels have different characteristics and also temperature may affect the characteristics
of the LCD panels. To compensate for such variations, the LCD driver has a programmable contrast that
adjusts the V
to either V
Table 29.5 (p. 424) , Table 29.5 (p. 424) and Table 29.6 (p. 425) .
Table 29.4. LCD Contrast
Note
Table 29.5. LCD Contrast Function
BIAS
00
01
10
CONCONF
0
1
-V
-V
V
V
LC1
LC2
LC2
LC1
-V
V
V
CONLEV
00000-11111
00000-11111
00000-11111
LC0
(2/3V
(1/3V
(1/3V
(2/3V
LC0
LC3
Reset value is maximum contrast
DD
(V
(V
(V
LCD_OUT
LCD
LCD
(V
LCD
LCD
LCD
LCD
SS
)
)
)
LCD
)
)
)
)
Fram e Start
) or Ground using CONCONF in LCD_DISPCTRL. See Table 29.4 (p. 424) and
. The contrast is set by CONLEV in LCD_DISPCTRL, and can be adjusted relative
Equation
V
V
V
LCD_OUT
LCD_OUT
LCD_OUT
Function
Contrast is adjusted relative to V
Contrast is adjusted relative to Ground
= V
= V
= V
LCD
LCD
LCD
x (0.61 x (1 + CONLEV/(2
x (0.53 x (1 + CONLEV/(2
x (0.61 x (1 + CONLEV/(2
Fram e End
...the world's most energy friendly microcontrollers
424
DD
(V
LCD
5
5
5
- 1)))
- 1)))
- 1)))
)
Range
CONLEV = 0 => V
CONLEV = 31 => V
CONLEV = 0 => V
CONLEV = 31 => V
CONLEV = 0 => V
CONLEV = 31 => V
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LCD_OUT
LCD_OUT
LCD_OUT
LCD_OUT
LCD_OUT
LCD_OUT
= 0.61V
= 0.53V
= 0.61V
= V
= V
= V
LCD
LCD
LCD
LCD
LCD
LCD