pcf8534 NXP Semiconductors, pcf8534 Datasheet - Page 11

• Manufacturer Part Number: pcf8534
• Description: Universal Driver Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8534_0
Preliminary datasheet
Fig 6. Waveforms for the 1:2 multiplex drive mode with
V
V
V
V
state1
ON(rms)
state2
OFF(rms)
S
state 1
state 2
n+1
BP0
BP1
(t) = V
(t) = V
S
n
= 0.745 V
= 0.333 V
sn
(sn)
(t) − V
Rev. 00.05 — 20 February 2007
(t) − V
−V
−V
−V
−V
V
V
V
V
−2V
−2V
V
2V
V
V
2V
V
V
2V
V
V
2V
V
V
2V
V
V
2V
V
SS
SS
SS
SS
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
0 V
LCD
LCD
0 V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
BP0
/3
/3
/3
/3
/3
/3
BP1
.
/3
/3
/3
/3
/3
/3
/3
/3
.
/3
/3
(t).
(t).
(a) Waveforms at driver.
(b) Resultant waveforms
Universal LCD driver for low multiplex rates
at LCD segment.
T
frame
1
⁄
3
bias.
mgl747
state 1
state 2
LCD segments
PCF8534
© NXP B.V. 2007. All rights reserved.
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