参数资料
| 型号： | PCA85134H/Q900/1,1 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 8/45页 |
| 文件大小： | 0K |
| 描述： | IC LCD DRIVER 80-LQFP |
| 特色产品： | NXP - I2C Interface |
| 标准包装： | 1 |
| 显示器类型： | LCD |
| 配置： | 7段 + DP，14段 + DP + AP，点阵 |
| 接口： | I²C，2 线串口 |
| 数字或字符： | 15 字符，30 字符，240 元件 |
| 电流 - 电源： | 8µA |
| 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： | 80-LQFP |
| 供应商设备封装： | 80-LQFP（12x12） |
| 包装： | 标准包装 |
| 其它名称： | 568-8594-6 |
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NXP Semiconductors
PCA85134
Automotive 60 x 4 LCD segment driver for low multiplex rates
D = ----------------------- ? =
a + 2a + n
a – 2a + n
V on ? RMS
V off ? RMS ?
2
---------------------------
2
(3)
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.
V LCD is sometimes referred as the LCD operating voltage.
7.3.1 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 is switched on or off, determines 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.
It is important to match the module properties to those of the driver in order to achieve
optimum performance.
PCA85134
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 28 July 2011
? NXP B.V. 2011. All rights reserved.
8 of 45
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| PCA8514T | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Stand-alone OSD |
| PCA8515 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Stand-alone OSD |
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