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参数资料
| 型号： | PCA85176H/Q900/1,5 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 14/59页 |
| 文件大小： | 0K |
| 描述： | IC LCD DRIVER 40SEG 64TQFP |
| 产品培训模块： | I²C Bus Fundamentals |
| 标准包装： | 1 |
| 显示器类型： | LCD |
| 配置： | 40 段 |
| 接口： | I²C |
| 电流 - 电源： | 80µA |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 95°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-TQFP |
| 供应商设备封装： | 64-TQFP（10x10） |
| 包装： | 标准包装 |
| 其它名称： | 568-5108-6 |
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NXP Semiconductors
PCA85176
Automotive LCD driver for low multiplex rates
Using Equation 3 , the discrimination for an LCD drive mode of 1:3 multiplex with
1 ?
2
bias is
3 = 1.732 and the discrimination for an LCD drive mode of 1:4 multiplex with
bias is ---------- = 1.528 .
1 ?
2
21
3
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 =
6 ? V off ? RMS ? = 2.449V off ? RMS ?
? 1:4 multiplex ( 1 ? 2 bias): V LCD = ? ---------------------- ? = 2.309V off ? RMS ?
4 ? 3
3
These compare with V LCD = 3V off ? RMS ? when 1 ? 3 bias is used.
It should be noted that V LCD is sometimes referred as the LCD operating voltage.
7.3.3.1
Electro-optical performance
Suitable values for V on(RMS) and V off(RMS) are dependent on the LCD liquid used. The
RMS voltage, at which a pixel will be switched on or off, determine the transmissibility of
the pixel.
For any given liquid, there are two threshold values defined. One point is at 10 % relative
transmission (at V th(off) ) and the other at 90 % relative transmission (at V th(on) ), see
V on ? RMS ? ? V th ? on ?
V off ? RMS ? ? V th ? off ?
(4)
(5)
V on(RMS) and V off(RMS) are properties of the display driver and are affected by the selection
of a, n (see Equation 1 to Equation 3 ) and the V LCD voltage.
V th(off) and V th(on) are properties of the LCD liquid and can be provided by the module
manufacturer. V th(off) is sometimes just named V th . V th(on) is sometimes named saturation
voltage V sat .
It is important to match the module properties to those of the driver in order to achieve
optimum performance.
PCA85176
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 11 July 2013
? NXP B.V. 2013. All rights reserved.
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相关代理商/技术参数 |
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|---|---|
| PCA85176T/Q900/1,1 | 功能描述:LCD 驱动器 40 SGMT 4800Hz RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
| PCA85176T/Q900/1,118 | 制造商:NXP Semiconductors 功能描述:Cut Tape |
| PCA85176T-Q900 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates |
| PCA8521 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Infrared remote control transmitter RC5 |
| PCA8521BP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Infrared remote control transmitter RC5 |
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