User manual

...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 783
www.energymicro.com
Figure 33.28. LCD 1/3 Bias and Triplex Multiplexing - LCD_SEG0
V
LC0
(V
LCD
)
V
LC3
(V
SS
)
V
LC1
(2/3V
LCD
)
V
LC2
(1/3V
LCD
)
Fram e Start Fram e End
Figure 33.29. LCD 1/3 Bias and Triplex Multiplexing - LCD_SEG0 Connection
com1
com2
com0
seg0
1/3 bias and triplex multiplexing - LCD_SEG0-LCD_COM0
• DC voltage = 0 (over one frame)
• V
RMS
= 0.33 V
LCD_OUT
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM0 will be OFF with this waveform
Figure 33.30. LCD 1/3 Bias and Triplex Multiplexing - LCD_SEG0-LCD_COM0
V
LC3
(V
SS
)
V
LC0
(V
LCD
)
V
LC1
(2/3V
LCD
)
V
LC2
(1/3V
LCD
)
-V
LC0
(V
LCD
)
-V
LC1
(2/3V
LCD
)
-V
LC2
(1/3V
LCD
)
Fram e Start Frame End
1/3 bias and triplex multiplexing - LCD_SEG0-LCD_COM1
• DC voltage = 0 (over one frame)
• V
RMS
= 0.64 × V
LCD_OUT
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM1 will be ON with this waveform
Figure 33.31. LCD 1/3 Bias and Triplex Multiplexing - LCD_SEG0-LCD_COM1
V
LC3
(V
SS
)
V
LC0
(V
LCD
)
V
LC1
(2/3V
LCD
)
V
LC2
(1/3V
LCD
)
-V
LC0
(V
LCD
)
-V
LC1
(2/3V
LCD
)
-V
LC2
(1/3V
LCD
)
Fram e Start Frame End