PCF8576CT/1,112 NXP Semiconductors, PCF8576CT/1,112 Datasheet - Page 17

• Manufacturer Part Number: PCF8576CT/1,112
• Description: IC LCD DVR UNVRSL LOW-MUX 56VSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF8576CT/1,112

• Package / Case: 56-VSOP
• Display Type: LCD
• Configuration: 40 Segment
• Interface: I²C
• Current - Supply: 120µA
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 20
• Number Of Segments: 160
• Maximum Clock Frequency: 315 KHz
• Operating Supply Voltage: 2 V to 6 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Attached Touch Screen: No
• Maximum Supply Current: 120 uA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 935278818112; PCF8576CTD; PCF8576CTD

NXP Semiconductors
PCF8576C
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, as
shown in
Fig 12. Waveforms for the 1:4 multiplex mode with
Sn+1
Sn+2
Sn+3
state 1
state 2
BP2
BP0
BP1
BP3
Sn
Figure
V
V
V
V
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
12.
= 0.577V
= 0.333V
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
/ 3
/ 3
(t) − V
(t) − V
Rev. 10 — 22 July 2010
LCD.
LCD
BP0
BP1
.
(t).
(t).
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
Universal LCD driver for low multiplex rates
T
fr
1
⁄
3
bias
PCF8576C
state 1
state 2
mgl749
© NXP B.V. 2010. All rights reserved.
LCD segments
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