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PCF8579T/1 데이터시트(PDF) 11 Page - NXP Semiconductors

부품명 PCF8579T/1
상세설명  LCD column driver for dot matrix graphic displays
PDF  41 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8579T/1 데이터시트(HTML) 11 Page - NXP Semiconductors

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PCF8579_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 11 May 2009
11 of 41
NXP Semiconductors
PCF8579
LCD column driver for dot matrix graphic displays
Vstate1(t) = C1(t) − R1(t).
Vstate2(t) = C2(t) − R2(t).
Fig 7.
LCD drive mode waveforms for 1:8 multiplex rate
msa840
ROW 1
R1 (t)
ROW 2
R2 (t)
COL 1
C1 (t)
COL 2
C2 (t)
dot matrix
1:8 multiplex rate
0.261 Voper
0.261 Voper
0 V
0.261 Voper
0.261 Voper
0 V
Voper
0.478 Voper
0.478 Voper
state 1 (OFF)
state 2 (ON)
VDD
V2
V3
V4
V5
VLCD
VDD
V2
V3
V4
V5
VLCD
VDD
V2
V3
V4
V5
VLCD
VDD
V2
V3
V4
V5
VLCD
Tfr
Voper
Voper
Voper
Vstate 1(t)
Vstate 2(t)
V
on RMS
()
V
oper
-----------------------
1
8
---
81
–
88
1
+
()
------------------------
+
0.430
=
=
V
off RMS
()
V
oper
------------------------
28
1
–
()
88
1
+
()2
-------------------------------
0.297
==



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