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PCF8533U/2/F2,026

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P53
PCF8533 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 6 — 1 October 2012 13 of 53
NXP Semiconductors
PCF8533
Universal LCD driver for low multiplex rates
7.3.3.2 1:2 multiplex drive mode
The 1:2 multiplex drive mode is used when two backplanes are provided in the LCD. This
mode allows fractional LCD bias voltages of
1
⁄
2
bias or
1
⁄
3
bias as shown in Figure 7 and
Figure 8
.
V
state1
(t) = V
Sn
(t) V
BP0
(t).
V
on(RMS)
= 0.791V
LCD
.
V
state2
(t) = V
Sn
(t) V
BP1
(t).
V
off(RMS)
= 0.354V
LCD
.
Fig 7. Waveforms for the 1:2 multiplex drive mode with
1
⁄
2
bias
mgl746
state 1
BP0
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
LCD segments
state 2
BP1
state 2
state 1
V
SS
V
LCD
V
LCD
/ 2
V
SS
V
SS
V
LCD
V
LCD
V
SS
V
LCD
V
LCD
V
LCD
0 V
0 V
V
LCD
/ 2
V
LCD
/ 2
V
LCD
/ 2
−V
LCD
−V
LCD
−V
LCD
/ 2
−V
LCD
/ 2
S
n
Sn+1
T
fr
PCF8533 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 6 — 1 October 2012 14 of 53
NXP Semiconductors
PCF8533
Universal LCD driver for low multiplex rates
V
state1
(t) = V
Sn
(t) V
BP0
(t).
V
on(RMS)
= 0.745V
LCD
.
V
state2
(t) = V
Sn
(t) V
BP1
(t).
V
off(RMS)
= 0.333V
LCD
.
Fig 8. Waveforms for the 1:2 multiplex drive mode with
1
⁄
3
bias
mgl747
state 1
BP0
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
LCD segments
state 2
BP1
state 1
state 2
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
0 V
V
LCD
2V
LCD
/ 3
−2V
LCD
/ 3
V
LCD
/ 3
−V
LCD
/ 3
−V
LCD
−V
LCD
0 V
V
LCD
2V
LCD
/ 3
−2V
LCD
/ 3
V
LCD
/ 3
−V
LCD
/ 3
S
n
Sn+1
T
fr
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
PCF8533 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 6 — 1 October 2012 15 of 53
NXP Semiconductors
PCF8533
Universal LCD driver for low multiplex rates
7.3.3.3 1:3 multiplex drive mode
The 1:3 multiplex drive mode is used when three backplanes are provided in the LCD as
shown in Figure 9
.
V
state1
(t) = V
Sn
(t) V
BP0
(t).
V
on(RMS)
= 0.638V
LCD
.
V
state2
(t) = V
Sn
(t) V
BP1
(t).
V
off(RMS)
= 0.333V
LCD
.
Fig 9. Waveforms for the 1:3 multiplex drive mode with
1
⁄
3
bias
mgl748
state 1
BP0
(b) Resultant waveforms
at LCD segment.
LCD segments
state 2
BP1
state 1
state 2
(a) Waveforms at driver.
BP2
Sn
Sn+1
Sn+2
T
fr
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
0 V
V
LCD
2V
LCD
/ 3
−2V
LCD
/ 3
V
LCD
/ 3
−V
LCD
/ 3
−V
LCD
0 V
V
LCD
2V
LCD
/ 3
−2V
LCD
/ 3
V
LCD
/ 3
−V
LCD
/ 3
−V
LCD
V
SS
V
LCD
2V
LCD
/ 3
V
LCD
/ 3
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P53

PCF8533U/2/F2,026

Mfr. #:
Buy PCF8533U/2/F2,026
Manufacturer:
NXP Semiconductors
Description:
LCD Drivers PCF8533U/WLCSP107//2/F2/DIE 2 WAFFLE CARRIERS NDP
Lifecycle:
New from this manufacturer.
Delivery:
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