数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

PCF85162 数据表(PDF) 7 Page - NXP Semiconductors

部件名 PCF85162
功能描述  Universal LCD driver for low multiplex rates
PDF  46 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF85162 数据表(HTML) 7 Page - NXP Semiconductors

Back Button PCF85162 Datasheet HTML 3Page - NXP Semiconductors PCF85162 Datasheet HTML 4Page - NXP Semiconductors PCF85162 Datasheet HTML 5Page - NXP Semiconductors PCF85162 Datasheet HTML 6Page - NXP Semiconductors PCF85162 Datasheet HTML 7Page - NXP Semiconductors PCF85162 Datasheet HTML 8Page - NXP Semiconductors PCF85162 Datasheet HTML 9Page - NXP Semiconductors PCF85162 Datasheet HTML 10Page - NXP Semiconductors PCF85162 Datasheet HTML 11Page - NXP Semiconductors Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 46 page
background image
PCF85162
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3 — 16 June 2011
7 of 46
NXP Semiconductors
PCF85162
Universal LCD driver for low multiplex rates
Discrimination is a term which is defined as the ratio of the on and off RMS voltage across
a segment. It can be thought of as a measurement of contrast.
A practical value for VLCD is determined by equating Voff(RMS) with a defined LCD
threshold voltage (Vth(off)), typically when the LCD exhibits approximately 10 % contrast. In
the static drive mode a suitable choice is VLCD >3Vth(off).
Multiplex drive modes of 1:3 and 1:4 with 1⁄2 bias are possible but the discrimination and
hence the contrast ratios are smaller.
Bias is calculated by
, where the values for a are
a = 1 for 1⁄2 bias
a = 2 for 1⁄3 bias
The RMS on-state voltage (Von(RMS)) for the LCD is calculated with Equation 1:
(1)
where the values for n are
n = 1 for static drive mode
n = 2 for 1:2 multiplex drive mode
n = 3 for 1:3 multiplex drive mode
n = 4 for 1:4 multiplex drive mode
The RMS off-state voltage (Voff(RMS)) for the LCD is calculated with Equation 2:
(2)
Discrimination is the ratio of Von(RMS) to Voff(RMS) and is determined from Equation 3:
(3)
Table 5.
Biasing characteristics
LCD drive
mode
Number of:
LCD bias
configuration
Backplanes Levels
static
1
2
static
0
1
1:2 multiplex
2
3
1⁄2
0.354
0.791
2.236
1:2 multiplex
2
4
1⁄3
0.333
0.745
2.236
1:3 multiplex
3
4
1⁄3
0.333
0.638
1.915
1:4 multiplex
4
4
1⁄3
0.333
0.577
1.732
V
off RMS

V
LCD
-------------------------
V
on RMS

V
LCD
------------------------
D
V
on RMS

V
off RMS

-------------------------
=
1
1a
+
-------------
V
on RMS

a2
2a
n
++
n
1a
+

2
------------------------------
V
LCD
=
V
off RMS

a2
2a
–
n
+
n
1a
+

2
------------------------------
V
LCD
=
D
V
on RMS

V
off RMS

-----------------------
a
2
2a
n
++
a
2
2a
–
n
+
---------------------------
==



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com