User manual

...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 798
www.energymicro.com
Bit Name Reset Access Description
Value Mode Description
0 LEVEL0 Minimum boost level
1 LEVEL1
2 LEVEL2
3 LEVEL3
4 LEVEL4
5 LEVEL5
6 LEVEL6
7 LEVEL7 Maximum boost level
17 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
16 VLCDSEL 0 RW V
LCD
Selection
This bit controls which Voltage source that is connected to V
LCD
.
Value Mode Description
0 VDD VDD
1 VEXTBOOST Voltage Booster/External VDD
15 CONCONF 0 RW Contrast Configuration
This bit selects whether the contrast adjustment is done relative to V
LCD
or Ground.
Value Mode Description
0 VLCD Contrast is adjusted relative to V
LCD
1 GND Contrast is adjusted relative to Ground
14:13 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
12:8 CONLEV 0x1F RW Contrast Level
These bits control the contrast setting according to this formula: V
LCD_OUT
= V
LCD
× 0.5(1+CONLEV/31).
Value Mode Description
0 MIN Minimum contrast
31 MAX Maximum contrast
7:5 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
4 WAVE 0 RW Waveform Selection
This bit configures the output waveform.
Value Mode Description
0 LOWPOWER Low power waveform
1 NORMAL Normal waveform
3:2 BIAS 0x0 RW Bias Configuration
These bits set the bias mode for the LCD Driver.
Value Mode Description
0 STATIC Static
1 ONEHALF 1/2 Bias
2 ONETHIRD 1/3 Bias
3 ONEFOURTH 1/4 Bias
1:0 MUX 0x0 RW Mux Configuration
These bits set the multiplexing mode for the LCD Driver. The field is dependent on the value of MUXE field
MUX MUXE Mode Description
0 0 STATIC Static. Uses com line LCD_COM0.
1 0 DUPLEX Duplex. Uses com lines LCD_COM0-
LCD_COM1.
2 0 TRIPLEX Triplex. Uses com lines LCD_COM0-
LCD_COM2.
3 0 QUADRUPLEX Quadruplex. Uses com lines LCD_COM0-
LCD_COM3.