參數(shù)資料
型號(hào): PCF8578T
廠商: NXP Semiconductors N.V.
元件分類: LCD驅(qū)動(dòng)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(yè)數(shù): 7/46頁(yè)
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
15 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 9.
LCD drive mode waveform for 1:16 multiplex rate
msa836
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
ROW 1
R1 (t)
ROW 2
R2 (t)
COL 1
C1 (t)
COL 2
C2 (t)
dot matrix
1:16 multiplex rate
state 1 (OFF)
state 2 (ON)
0.2 Voper
0 V
Voper
Vstate 1(t)
Vstate 2(t)
0.2 Voper
0 V
Voper
0.6 Voper
V
on RMS
()
V
oper
-----------------------
1
16
------
16
1
16
1
+
()
------------------------------
+
0.316
=
V
off RMS
()
V
oper
------------------------
216
1
()
16
1
+
()2
-------------------------------------
0.254
==
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