Filter
Top Products
933
Chapter 47 LCD Controller
5.Operation
5.4 1/4 Duty Cycle Output Waveform
In the 1/4 duty cycle output mode, COM0, COM1, COM2, and COM3 outputs are all used for LCD display.
• Example of 1/3 Bias Output Waveform
LCD cells with the maximum voltage difference between common and segment output are lit.
Table 5-3 Example of Data Memory Contents for Display
Segment
Contents of data memory for display
COM3 output COM2 output COM1 output COM0 output
SEG 2n
output
0100
SEG2n+1
output
0101
COM3 output
COM0 output
COM1 output
COM2 output
V
0
V1
V2
V3
V
0
V1
V2
V
3
V
0
V1
V2
V3
V
0
V1
V2
V
3
SEG 2n output
V
0
V1
V2
V
3
SEG 2n+1 output
V0
V1
V2
V3
LCD cell corresponding to SEG 2n, COM0 output
LCD cell corresponding to SEG 2n, COM1 output
LCD cell corresponding to SEG 2n, COM2 output
LCD cell corresponding to SEG 2n, COM3 output
LCD cell corresponding to SEG 2n+1, COM0 output
LCD cell corresponding to SEG 2n+1, COM1 output
LCD cell corresponding to SEG 2n+1, COM2 output
LCD cell corresponding to SEG 2n+1, COM3 output
O
N
O
FF
O
N
OFF
ON
O
FF
O
N
O
FF
ON
OFF
O
N
O
FF
ON
OFF
O
N
O
FF