PCF8534AH/1,518 NXP Semiconductors, PCF8534AH/1,518 Datasheet - Page 12

• Manufacturer Part Number: PCF8534AH/1,518
• Description: IC LCD DVR UNVRSL LOW-MUX 80LQFP
• Manufacturer: NXP Semiconductors

Specifications of PCF8534AH/1,518

• Package / Case: 80-LQFP
• Display Type: LCD
• Configuration: 60 Segment
• Interface: I²C
• Current - Supply: 8µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 30
• Number Of Segments: 240
• 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
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Details
• Other names: 935284829518; PCF8534AH/1-T; PCF8534AH/1-T

NXP Semiconductors
PCF8534A_3
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 9.
Sn+1
Sn+2
Sn+3
state 1
state 2
BP2
BP0
BP1
BP3
Sn
Figure
V
V
V
V
Waveforms for the 1:4 multiplex drive mode with
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
0 V
0 V
V
2V
V
V
2V
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
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
9.
= 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
Rev. 03 — 10 November 2008
(t)
(t)
LCD
LCD
V
V
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
PCF8534A
state 1
state 2
mgl749
© NXP B.V. 2008. All rights reserved.
LCD segments
12 of 44