pcf8562 NXP Semiconductors, pcf8562 Datasheet - Page 13

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

NXP Semiconductors
PCF8562_2
Product data sheet
Fig 8. Waveforms for the 1 : 4 multiplex drive mode
a. Waveforms at driver
b. Resultant waveforms at LCD segment
V
state1
(t) = V
Sn 1
Sn 2
Sn 3
BP0
BP1
BP2
BP3
Sn
Sn
(t)
2V
2V
2V
2V
2V
2V
2V
2V
V
V
V
V
V
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
BP0
state 1
state 2
/ 3
/ 3
SS
/ 3
/ 3
SS
/ 3
/ 3
SS
/ 3
/ 3
SS
/ 3
/ 3
SS
/ 3
/ 3
SS
/ 3
/ 3
SS
/ 3
/ 3
SS
(t); V
2V
2V
2V
2V
on(rms)
V
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
V
V
V
V
LCD
LCD
LCD
LCD
0 V
0 V
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
= 0.577V
LCD
Rev. 02 — 22 January 2007
; V
T
state2
frame
(t) = V
Sn
(t)
V
BP1
Universal LCD driver for low multiplex rates
(t); V
off(rms)
= 0.333V
state 1
state 2
001aac321
LCD segments
LCD
001aac320
PCF8562
© NXP B.V. 2007. All rights reserved.
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