PCF8576DT/S400/2,1 NXP Semiconductors, PCF8576DT/S400/2,1 Datasheet - Page 16
PCF8576DT/S400/2,1
Manufacturer Part Number
PCF8576DT/S400/2,1
Description
LCD Drivers 2.64KHz 50mA 400mW
Manufacturer
NXP Semiconductors
Datasheet
1.PCF8576DTS40021.pdf
(56 pages)
Specifications of PCF8576DT/S400/2,1
Rohs
yes
Maximum Clock Frequency
2.64 kHz
Operating Supply Voltage
1.8 V to 5.5 V
Package / Case
TSSOP-56
Maximum Power Dissipation
400 mW
Maximum Supply Current
50 mA
Mounting Style
SMD/SMT
Factory Pack Quantity
2000
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NXP Semiconductors
PCF8576D
Product data sheet
7.4.4 1:4 Multiplex drive mode
When four backplanes are provided in the LCD, the 1:4 multiplex drive mode applies (see
Figure
Fig 11. Waveforms for the 1:4 multiplex drive mode with
Sn+1
Sn+2
Sn+3
state 1
state 2
BP2
BP0
BP1
BP3
Sn
(1) V
(2) V
(3) V
(4) V
11).
state1
on(RMS)
state2
off(RMS)
(t) = V
(t) = V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
−V
−2V
−V
V
2V
V
−V
−2V
−V
0 V
0 V
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
LCD
LCD
All information provided in this document is subject to legal disclaimers.
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
= 0.333V
= 0.577V
LCD
LCD
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
Sn
Sn+1
/ 3
/ 3
(t) − V
(t) − V
Rev. 13 — 10 May 2012
LCD
LCD
BP0
.
.
BP1
(t).
(t).
(b) Resultant waveforms
(a) Waveforms at driver.
at LCD segment.
Universal LCD driver for low multiplex rates
T
fr
1
⁄
3
bias
PCF8576D
state 1
state 2
mgl749
© NXP B.V. 2012. All rights reserved.
LCD segments
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