PCF8566T NXP Semiconductors, PCF8566T Datasheet - Page 11

• 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
7.4.2 1:2 Multiplex drive mode
When two backplanes are provided in the LCD, the 1:2 multiplex mode applies. The
PCF8566 allows the use of
Fig 6.
V
V
V
V
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
= 0.791V
= 0.354V
Sn
Sn
(t)
(t)
Rev. 07 — 25 February 2009
V
V
V
V
V
V
V
V
V
V
V
V
V
V
0 V
0 V
V
V
V
V
LCD
LCD
SS
LCD
LCD
SS
LCD
SS
LCD
SS
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
V
V
/ 2
/ 2
/ 2
/ 2
BP0
BP1
.
/ 2
/ 2
1
(t).
(t).
2
bias or
1
3
(a) Waveforms at driver.
(b) Resultant waveforms
bias (see
Universal LCD driver for low multiplex rates
at LCD segment.
T
fr
Figure 6
1
2
and
bias
state 1
state 2
mgl746
Figure
LCD segments
PCF8566
7).
© NXP B.V. 2009. All rights reserved.
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