參數(shù)資料
型號: PCF8533
廠商: NXP Semiconductors N.V.
英文描述: Universal LCD driver for low multiplex rates
中文描述: 通用LCD驅動器的低復用率
文件頁數(shù): 9/36頁
文件大?。?/td> 158K
代理商: PCF8533
1999 Jul 30
9
Philips Semiconductors
Product specification
Universal LCD driver for low multiplex rates
PCF8533
6.4.2
1 : 2
MULTIPLEX DRIVE MODE
When two backplanes are provided in the LCD, the 1 : 2 multiplex mode applies. The PCF8533 allows the use of
1
2
bias
or
1
3
bias in this mode as shown in Figs 4 and 5.
Fig.4 Waveforms for the 1 : 2 multiplex drive mode with
1
2
bias.
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
.
handbook, full pagewidth
MGL746
state 1
BP0
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
LCD segments
state 2
BP1
state 2
state 1
VSS
VLCD
VLCD/2
VSS
VSS
VLCD
VLCD
VSS
VLCD
VLCD
VLCD/2
VLCD
VLCD/2
0 V
0 V
VLCD/2
VLCD
VLCD
VLCD/2
VLCD/2
Sn
Sn
+
1
Tframe
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