參數(shù)資料
型號： PCF8562
廠商： NXP Semiconductors N.V.
英文描述： Universal LCD driver for low multiplex rates
中文描述： 通用LCD驅(qū)動器的低復(fù)用率
文件頁數(shù)： 9/36頁
文件大?。?/td> 928K
代理商： PCF8562
November 22, 2004
9
Philips Semiconductors
Preliminary specification
Universal LCD driver
for low multiplex rates
PCF8562
Discrimination is the ratio of V
on
to V
off
, and is determined by the formula
Using the above formula, the discrimination for an LCD drive mode of 1 : 3 with
1
2
bias is
= 1.732, and the
discrimination for an LCD drive mode of 1 : 4 with
1
2
bias is
= 1.528.
The advantage of these LCD drive modes is a reduction of the LCD full-scale voltage V
LCD
as follows:
1 : 3 multiplex (
1
2
bias): V
LCD
=
= 2.449 V
off(rms)
1 : 4 multiplex (
1
2
bias): V
LCD
=
= 2.309 V
off(rms)
These compare with V
LCD
= 3 V
off(rms)
when
1
3
bias is used.
Table 2
Discrimination ratios
LCD DRIVE MODE
NUMBER OF
LCD BIAS
CONFIGURATION
BACKPLANES
LEVELS
static
1 : 2 multiplex
1 : 2 multiplex
1 : 3 multiplex
1 : 4 multiplex
1
2
2
3
4
2
3
4
4
4
static
1
2
1
3
1
3
1
3
0
0.354
0.333
0.333
0.333
1
0.791
0.745
0.638
0.577
∞
2.236
2.236
1.915
1.732
V
off
V
a
1
1
+
–
(
)
2
)
2
N
N
1
1
–
–
(
(
)
)
+
+
-a
=
3
---3
6
V
off(rms)
×
3
×
-4
)
3
V
lcd
-----V
V
lcd
---V
D
V
off(rms)
V
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCF8562_09 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates
PCF8562_11 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates
PCF8562DTT/2,518 制造商:NXP Semiconductors 功能描述:Tape & Reel
PCF8562TT/2 制造商:NXP Semiconductors 功能描述:
PCF8562TT/2,118 功能描述:LCD 驅(qū)動器 LCD DRIVER 32/128SEG RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
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