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PCF8576DT/2,118

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P54P55-P57P58-P59
PCF8576D All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 15 — 12 February 2015 13 of 59
NXP Semiconductors
PCF8576D
40 × 4 universal LCD driver for low multiplex rates
7.4.2 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 8 and
Figure 9
.
(1) V
state1
(t) = V
Sn
(t) V
BP0
(t).
(2) V
on(RMS)
= 0.791V
LCD
.
(3) V
state2
(t) = V
Sn+1
(t) V
BP1
(t).
(4) V
off(RMS)
= 0.354V
LCD
.
Fig 8. Waveforms for the 1:2 multiplex drive mode with
1
⁄
2
bias
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PCF8576D All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 15 — 12 February 2015 14 of 59
NXP Semiconductors
PCF8576D
40 × 4 universal LCD driver for low multiplex rates
(1) V
state1
(t) = V
Sn
(t) V
BP0
(t).
(2) V
on(RMS)
= 0.745V
LCD
.
(3) V
state2
(t) = V
Sn+1
(t) V
BP1
(t).
(4) V
off(RMS)
= 0.333V
LCD
.
Fig 9. Waveforms for the 1:2 multiplex drive mode with
1
⁄
3
bias
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PCF8576D All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 15 — 12 February 2015 15 of 59
NXP Semiconductors
PCF8576D
40 × 4 universal LCD driver for low multiplex rates
7.4.3 1:3 Multiplex drive mode
When three backplanes are provided in the LCD, the 1:3 multiplex drive mode applies
(see Figure 10
).
(1) V
state1
(t) = V
Sn
(t) V
BP0
(t).
(2) V
on(RMS)
= 0.638V
LCD
.
(3) V
state2
(t) = V
Sn+1
(t) V
BP1
(t).
(4) V
off(RMS)
= 0.333V
LCD
.
Fig 10. Waveforms for the 1:3 multiplex drive mode with
1
⁄
3
bias
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P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45P46-P48P49-P51P52-P54P55-P57P58-P59

PCF8576DT/2,118

Mfr. #:
Buy PCF8576DT/2,118
Manufacturer:
NXP Semiconductors
Description:
LCD Drivers LCD DRIVER 40/160SEG
Lifecycle:
New from this manufacturer.
Delivery:
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