參數(shù)資料
型號: PCF8576C
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(qū)動器的低復(fù)用率
文件頁數(shù): 9/40頁
文件大?。?/td> 243K
代理商: PCF8576C
1998 Feb 06
9
Philips Semiconductors
Product specification
Universal LCD driver for low multiplex
rates
PCF8576
6.4
LCD drive mode waveforms
6.4.1
S
TATIC DRIVE MODE
The static LCD drive mode is used when a single
backplane is provided in the LCD. Backplane and
segment drive waveforms for this mode are shown in
Fig.4.
6.4.2
1 : 2
MULTIPLEX DRIVE MODE
When two backplanes are provided in the LCD, the 1 : 2
multiplex mode applies. The PCF8576 allows use of
1
2
bias or
1
3
bias in this mode as shown in Figs 5 and 6.
6.4.3
1 : 3
MULTIPLEX DRIVE MODE
When three backplanes are provided in the LCD, the 1 : 3
multiplex drive mode applies, as shown in Fig.7.
6.4.4
1 : 4
MULTIPLEX DRIVE MODE
When four backplanes are provided in the LCD, the 1 : 4
multiplex drive mode applies, as shown in Fig.8.
V
state1
t)
V
S
n
t)
V
BP0
t)
=
V
on(rms)
V
op
=
V
state2
t)
V
S
n
1
+
t)
V
BP0
t)
=
V
off(rms)
0 V
=
Fig.4 Static drive mode waveforms (V
op
= V
DD
V
LCD
).
MBE539
VDD
VLCD
VLCD
VDD
VLCD
Vop
Vop
state 1
0
BP0
Sn
Sn 1
Vop
Vop
state 2
0
(a) waveforms at driver
(b) resultant waveforms
at LCD segment
LCD segments
state 1
(on)
state 2
(off)
Tframe
VDD
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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