pcf8562 NXP Semiconductors, pcf8562 Datasheet - Page 10

• Manufacturer Part Number: pcf8562
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8562_2
Product data sheet
Fig 6. Waveforms for the 1 : 2 multiplex drive mode with
a. Waveforms at driver
b. Resultant waveforms at LCD segment
V
V
state1
off(rms)
(t) = V
= 0.333V
Sn 1
BP0
BP1
Sn
Sn
(t)
2V
2V
2V
2V
V
V
V
V
state 1
state 2
Rev. 02 — 22 January 2007
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
V
V
V
V
V
V
V
V
V
LCD
LCD
LCD
LCD
BP0
/ 3
/ 3
SS
/ 3
/ 3
SS
/ 3
/ 3
SS
/ 3
/ 3
SS
2V
2V
2V
2V
(t); V
V
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
V
V
V
V
on(rms)
LCD
LCD
LCD
LCD
0 V
0 V
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
= 0.745V
T
Universal LCD driver for low multiplex rates
frame
LCD
; V
state2
(t) = V
1
Sn+1
3
bias
001aac317
state 1
state 2
(t)
LCD segments
V
BP1
001aac316
(t);
PCF8562
© NXP B.V. 2007. All rights reserved.
10 of 36