User manual

...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 781
www.energymicro.com
Figure 33.20. LCD 1/2 Bias and Triplex Multiplexing - LCD_SEG0
V
LC0
(V
LCD
)
V
LC1
(1/2V
LCD
)
V
LC3
(V
SS
)
Fram e Start Frame End
Figure 33.21. LCD 1/2 Bias and Triplex Multiplexing - LCD_SEG0 Connection
com1
com2
com0
seg0
1/2 bias and triplex multiplexing - LCD_SEG0-LCD_COM0
• DC voltage = 0 (over one frame)
• V
RMS
= 0.4 × V
LCD_OUT
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM0 will be OFF with this waveform
Figure 33.22. LCD 1/2 Bias and Triplex Multiplexing - LCD_SEG0-LCD_COM0
V
LC0
(V
LCD
)
V
LC3
(V
SS
)
-V
LC0
(V
LCD
)
V
LC1
(1/2V
LCD
)
-V
LC1
(1/2V
LCD
)
Fram e Start Fram e End
1/2 bias and triplex multiplexing - LCD_SEG0-LCD_COM1
• DC voltage = 0 (over one frame)
• V
RMS
= 0.7 V
LCD_OUT
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM1 will be ON with this waveform
Figure 33.23. LCD 1/2 Bias and Triplex Multiplexing - LCD_SEG0-LCD_COM1
V
LC0
(V
LCD
)
V
LC3
(V
SS
)
-V
LC0
(V
LCD
)
V
LC1
(1/2V
LCD
)
-V
LC1
(1/2V
LCD
)
Fram e Start Fram e End
1/2 bias and triplex multiplexing - LCD_SEG0-LCD_COM2
• DC voltage = 0 (over one frame)
• V
RMS
= 0.4 × V
LCD_OUT
• The LCD display pixel that is connected to LCD_SEG0 and LCD_COM2 will be OFF with this waveform