pcf8534ah-1 NXP Semiconductors, pcf8534ah-1 Datasheet - Page 12

• Manufacturer Part Number: pcf8534ah-1
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1999 Jul 30
handbook, full pagewidth
Universal LCD driver for low multiplex rates
V
V
state1
state2
(t) = V
(t) = V
S n
S n
S n
state 1
state 2
BP2
BP0
BP1
BP3
S n
sn
sn
1
2
3
(t)
(t)
V
V
BP0
BP1
(t): V
(t): V
V LCD
V LCD /3
V LCD /3
V LCD
V LCD /3
V LCD
V LCD /3
V LCD
V LCD /3
2V LCD /3
V SS
V LCD
V LCD /3
V SS
V LCD
2V LCD /3
V LCD /3
V SS
V LCD
V LCD /3
V SS
V LCD
2V LCD /3
V LCD /3
V SS
V LCD
2V LCD /3
V SS
2V LCD /3
V SS
2V LCD /3
2V LCD /3
V LCD
V LCD /3
V SS
2V LCD /3
2V LCD /3
2V LCD /3
V LCD /3
V LCD
V LCD /3
2V LCD /3
2V LCD /3
V LCD
0 V
0 V
on(rms)
off(rms)
= 0.577V
= 0.333V
Fig.7 Waveforms for the 1 : 4 multiplex drive mode.
LCD
LCD
.
.
(b) Resultant waveforms
(a) Waveforms at driver.
at LCD segment.
T frame
12
state 1
state 2
MGL749
LCD segments
Product specification
PCF8533