OM4068 Philips Semiconductors, OM4068 Datasheet - Page 12

• Manufacturer Part Number: OM4068
• Description: LCD driver for low multiplex rates
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 Jun 18
handbook, full pagewidth
LCD driver for low multiplex rates
BP1
BP2
BP3
DRIVER OUTPUTS
SEG N
SEG N
SEG N
SEG N
SEG N
SEG N
SEG N
BACKPLANE
SEG N
2
3
4
5
6
7
1
2/3V LCD
1/3V LCD
2/3V LCD
1/3V LCD
2/3V LCD
1/3V LCD
2/3V LCD
1/3V LCD
2/3V LCD
1/3V LCD
2/3V LCD
1/3V LCD
2/3V LCD
1/3V LCD
2/3V LCD
1/3V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V SS
V SS
V SS
V SS
V SS
V SS
V SS
V SS
Fig.7 Waveforms for 1 : 3 multiplex drive motive (V
off
off
off
T frame
N
MBK821
N + 1 N + 2 N + 3 N + 4 N + 5 N + 6 N + 7
on
off
off
off
on
off
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
1/3V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V SS
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
SEG - BP1
on
on
off
SEGMENTS
T frame
BP1
off
off
on
12
on
off
on
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
1/3V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V SS
off
on
on
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
SEG - BP2
OP
T frame
on
on
on
= V
BP2
LCD
V
SS
).
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
2/3V LCD
1/3V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V LCD
V SS
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
Product specification
SEG - BP3
OM4068
T frame
BP3