參數(shù)資料
型號: 935263925005
廠商: NXP SEMICONDUCTORS
元件分類: 顯示驅(qū)動器
英文描述: LIQUID CRYSTAL DISPLAY DRIVER, UUC56
封裝: DIE-56
文件頁數(shù): 6/46頁
文件大?。?/td> 246K
代理商: 935263925005
1998 Jul 30
14
Philips Semiconductors
Product specication
Universal LCD driver for low multiplex
rates
PCF8576C
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.9.
MBE543
2V
/3
op
Vop
state 1
0
BP0
(b) resultant waveforms
at LCD segment
LCD segments
state 2
Tframe
BP1
Vop
state 1
V
/3
op
2V
/3
op
V
/3
op
2V
/3
op
Vop
state 2
0
Vop
V
/3
op
2V
/3
op
V
/3
op
Sn 1
BP2
S n 2
Sn 3
(a) waveforms at driver
Sn
BP3
VDD
V
/3
DD
op
VLCD
V
2V
/3
DD
op
VDD
V
/3
DD
op
VLCD
V
2V
/3
DD
op
VDD
V
/3
DD
op
VLCD
V
2V
/3
DD
op
VDD
V
/3
DD
op
VLCD
V
2V
/3
DD
op
VDD
V
/3
DD
op
VLCD
V
2V
/3
DD
op
VDD
V
/3
DD
op
VLCD
V
2V
/3
DD
op
VDD
V
/3
DD
op
VLCD
V
2V
/3
DD
op
VDD
V
/3
DD
op
VLCD
V
2V
/3
DD
op
Fig.9 Waveforms for the 1 : 4 multiplex drive mode (Vop =VDD VLCD).
V
state1 t
()
V
S
n
t
()
V
BP0 t
()
=
V
on(rms)
0.577V
op
=
V
state2 t
()
V
S
n
t
()
V
BP1 t
()
=
V
off(rms)
0.333V
op
=
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