PCF8562TT/2,518 NXP Semiconductors, PCF8562TT/2,518 Datasheet - Page 10

• Manufacturer Part Number: PCF8562TT/2,518
• Description: LCD Drivers LCD DRIVER 32/128SEG
• Manufacturer: NXP Semiconductors

Specifications of PCF8562TT/2,518

• Number Of Digits: 16
• Number Of Segments: 128
• Maximum Clock Frequency: 400 KHz
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Package / Case: TSSOP-48
• Maximum Supply Current: 20 uA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935276218518 PCF8562TT/2-T

NXP Semiconductors
PCF8562_5
Product data sheet
7.4.2 1:2 Multiplex drive mode
The 1:2 multiplex drive mode is used when two backplanes are provided in the LCD. This
mode allows fractional LCD bias voltages of
Figure
Fig 5.
(1) V
(2) V
(3) V
(4) V
6.
Waveforms for the 1:2 multiplex drive mode with
state1
on(RMS)
state2
off(RMS)
Sn+1
state 1
state 2
(t) = V
(t) = V
BP0
BP1
S n
All information provided in this document is subject to legal disclaimers.
= 0.791V
= 0.354V
Sn
Sn+1
(t) − V
V
V
V
V
V
V
V
V
V
V
V
V
−V
−V
V
V
−V
−V
0 V
0 V
(t) − V
LCD
LCD
SS
LCD
LCD
SS
LCD
SS
LCD
SS
LCD
LCD
LCD
LCD
Rev. 05 — 19 May 2010
LCD
LCD
LCD
LCD
LCD
LCD
BP0
/ 2
/ 2
/ 2
/ 2
.
.
/ 2
/ 2
BP1
(t).
(t).
(a) Waveforms at driver.
(b) Resultant waveforms
Universal LCD driver for low multiplex rates
at LCD segment.
1
⁄
2
bias or
T
fr
1
⁄
3
1
bias as shown in
⁄
2
bias
state 1
state 2
mgl746
LCD segments
PCF8562
© NXP B.V. 2010. All rights reserved.
Figure 5
10 of 37
and