參數(shù)資料
型號: PCF85176T
廠商: NXP SEMICONDUCTORS
元件分類: 顯示驅(qū)動器
英文描述: Universal LCD driver for low multiplex rates
中文描述: LIQUID CRYSTAL DISPLAY DRIVER, PDSO56
封裝: 6.10 MM, PLASTIC, MO-153, SOT364-1, TSSOP-56
文件頁數(shù): 12/47頁
文件大?。?/td> 405K
代理商: PCF85176T
PCF85176
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 27 June 2011
12 of 47
NXP Semiconductors
PCF85176
Universal LCD driver for low multiplex rates
7.4.2
1:2 Multiplex drive mode
When two backplanes are provided in the LCD, the 1:2 multiplex mode applies. The
PCF85176 allows the use of
1
2
bias or
1
3
bias in this mode as shown in
Figure 8
and
Figure 9
.
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
.
Waveforms for the 1:2 multiplex drive mode with
1
2
bias
Fig 8.
013aaa208
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
Sn
Sn+1
T
fr
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