PCA9620H NXP [NXP Semiconductors], PCA9620H Datasheet - Page 29

• Manufacturer Part Number: PCA9620H
• Description: Universal LCD driver for low multiplex rates
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCA9620
Product data sheet
Fig 21. Waveforms for 1:8 multiplex drive mode with
state 1
state 2
Sn + 1
BP0
BP1
BP2
BP3
BP4
BP5
BP6
BP7
Sn
V
state1
−3V
−3V
3V
3V
3V
3V
3V
3V
3V
3V
3V
−V
3V
−V
−V
V
V
V
V
V
V
V
V
V
V
V
V
3
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
−V
−V
7.4.2.5 1:8 Multiplex drive mode
V
V
V
V
V
V
V
V
V
V
V
V
(t) = V
LCD
V
V
V
V
V
V
V
V
V
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 4
/ 2
/ 2
/ 4
/ 4
/ 4
/ 4
/ 4
/ 2
/ 4
/ 4
/ 2
/ 4
Sn
(t) − V
BP0
(t). V
state2
(t) = V
All information provided in this document is subject to legal disclaimers.
Sn
(t) − V
Rev. 1 — 9 December 2010
BP1
(t). V
1
on(RMS)
⁄
Tfr
4
bias (line inversion mode)
(t) = 0.424V
Universal LCD driver for low multiplex rates
LCD
. V
off(RMS)
(t) = 0.293V
LCD
state 1
.
PCA9620
© NXP B.V. 2010. All rights reserved.
LCD segments
001aal398
state 2
29 of 71