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): 3/46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
11 of 46
NXP Semiconductors
PCF8578
LCD row/column driver for dot matrix graphic displays
where the values for n are determined by the multiplex rate (1:n). Valid values for n are:
n = 8 for 1:8 multiplex
n = 16 for 1:16 multiplex
n = 24 for 1:24 multiplex
n = 32 for 1:32 multiplex
Figure 6 shows the values of Table 6 as graphs.
Table 6.
Optimum LCD voltages
Bias ratios
Multiplex rate
1:8
1:16
1:24
1:32
0.739
0.800
0.830
0.850
0.522
0.600
0.661
0.700
0.478
0.400
0.339
0.300
0.261
0.200
0.170
0.150
Table 7.
Discrimination ratios
Discrimination
ratios
Multiplex rate
1:8
1:16
1:24
1:32
0.297
0.245
0.214
0.193
0.430
0.316
0.263
0.230
1.447
1.291
1.230
1.196
3.370
4.080
4.680
5.190
V
2
V
oper
--------------
V
3
V
oper
--------------
V
4
V
oper
--------------
V
5
V
oper
--------------
V
off RMS
()
V
oper
-------------------------
V
on RMS
()
V
oper
-----------------------
D
V
on RMS
()
V
off RMS
()
-------------------------
=
V
oper
V
th
--------------
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