PCF8576DT/2,118 NXP Semiconductors, PCF8576DT/2,118 Datasheet - Page 15

• Manufacturer Part Number: PCF8576DT/2,118
• Description: IC LCD DRIVER 40/160SEG 56TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF8576DT/2,118

• Package / Case: 56-TSSOP
• Display Type: LCD
• Configuration: 40 Segment
• Interface: I²C
• Current - Supply: 24µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 20
• Number Of Segments: 160
• 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
• Maximum Supply Current: 50 mA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4703 - DEMO BOARD LCD GRAPHIC DRIVER
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-3558-2; 935276166118; PCF8576DT/2-T

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 10. Waveforms for the 1:4 multiplex drive mode with
Sn+1
Sn+2
Sn+3
state 1
state 2
BP2
BP0
BP1
BP3
(1) V
(2) V
(3) V
(4) V
Sn
10).
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
Rev. 10 — 14 February 2011
(t) − V
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
PCF8576D
state 1
state 2
mgl749
© NXP B.V. 2011. All rights reserved.
LCD segments
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