pca8576d NXP Semiconductors, pca8576d Datasheet - Page 11

• Manufacturer Part Number: pca8576d
• Description: Automotive 40 X 4 Lcd Segment Driver For Low Multiplex Rates Up To 1 4
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA8576D
Product data sheet
Fig 7.
(1) V
(2) V
(3) V
(4) V
Waveforms for the 1:2 multiplex drive mode with
state1
on(RMS)
state2
off(RMS)
S n+1
state 1
state 2
BP0
BP1
S n
(t) = V
(t) = V
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= 0.333V
= 0.745V
Sn
Sn+1
(t)  V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
−V
−2V
−V
V
2V
V
−V
−2V
−V
0 V
0 V
(t)  V
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
LCD
LCD
Automotive 40 x 4 LCD segment driver for low multiplex rates
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
Rev. 1 — 4 April 2011
LCD
LCD
BP0
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
.
.
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
BP1
/ 3
/ 3
(t).
(t).
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
T
fr
1

3
bias
mgl747
state 1
state 2
LCD segments
PCA8576D
© NXP B.V. 2011. All rights reserved.
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