參數(shù)資料
型號: PCF8578T
廠商: NXP Semiconductors N.V.
元件分類: LCD驅(qū)動器
英文描述: LCD row-column driver for dot matrix graphic displays
封裝: PCF8578HT/1<SOT357-1 (TQFP64)|<<http://www.nxp.com/packages/SOT357-1.html<1<Always Pb-free,;PCF8578T/1<SOT190-1 (VSO56)|<<http://www.nxp.com/packages/SOT190-1.html<1&l
文件頁數(shù): 6/46頁
文件大?。?/td> 274K
代理商: PCF8578T
PCF8578_6
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 06 — 5 May 2009
14 of 46
NXP Semiconductors
PCF8578
LCD row/column driver for dot matrix graphic displays
Vstate1(t) = C1(t) R1(t).
Vstate2(t) = C2(t) R2(t).
Fig 8.
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 V
0.261 Voper
0 V
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
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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