參數(shù)資料
型號(hào)： 935198780557
廠商： NXP SEMICONDUCTORS
元件分類： 顯示驅(qū)動(dòng)器
英文描述： LIQUID CRYSTAL DISPLAY DRIVER, PQFP64
封裝： PLASTIC, LQFP-64
文件頁(yè)數(shù)： 3/43頁(yè)
文件大?。?/td> 327K
代理商： 935198780557
1997 Apr 01
11
Philips Semiconductors
Product specication
LCD column driver for dot matrix graphic
displays
PCF8579
Fig.7 LCD drive mode waveforms for 1 : 16 multiplex rate.sa.
MSA836
VDD
V2
V
3
4
5
LCD
T frame
ROW 1
R1 (t)
VDD
V2
V
3
4
5
LCD
ROW 2
R2 (t)
VDD
V2
V
3
4
5
LCD
COL 1
C1 (t)
VDD
V2
V
3
4
5
LCD
COL 2
C2 (t)
dot matrix
1:16 multiplex rate
state 1 (OFF)
state 2 (ON)
0.2 Vop
0 V
Vop
V state 1 (t)
0.2 Vop
0 V
Vop
V state 2 (t)
0.6 Vop
Vstate 1 (t) = C1(t) R1(t):
Von(rms)
Vop
=
1
16
16 1
()
16
= 0.316
Vstate 2 (t) = C2(t) R2(t):
Voff(rms)
Vop
=
16 1
()
16
= 0.254
2
2 ()
general relationship (n = multiplex rate)
Von(rms)
Vop
=
1
n
1
n
1
()
n
Voff(rms)
Vop
=
n 1
()
n
2
2 ()
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