PCF8566T NXP Semiconductors, PCF8566T Datasheet - Page 13

• Manufacturer Part Number: PCF8566T
• Manufacturer: NXP Semiconductors

Specifications of PCF8566T

• Operating Supply Voltage (typ): 3.3/5V
• Number Of Digits: 12
• Number Of Segments: 96
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: VSO
• Pin Count: 40
• Mounting: Surface Mount
• Power Dissipation: 400mW
• Frequency (max): 315KHz
• Operating Supply Voltage (min): 2.5V
• Operating Supply Voltage (max): 6V
• Lead Free Status / Rohs Status: Not Compliant

NXP Semiconductors
PCF8566_7
Product data sheet
7.4.3 1:3 Multiplex drive mode
When three backplanes are provided in the LCD, the 1:3 multiplex drive mode applies as
shown in
Fig 8.
state 1
state 2
S n+1
S n+2
BP2
Figure
BP0
BP1
V
V
V
V
Waveforms for the 1:3 multiplex drive mode with
S n
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
2V
V
0 V
0 V
8.
V
2V
V
V
2V
V
= 0.638V
= 0.333V
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
Sn
Sn
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
(t)
(t)
Rev. 07 — 25 February 2009
/ 3
/ 3
LCD
LCD.
V
V
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
state 1
state 2
LCD segments
mgl748
PCF8566
© NXP B.V. 2009. All rights reserved.
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