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参数资料
| 型号： | PCF8566P,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 8/48页 |
| 文件大小： | 0K |
| 描述： | IC LCD DVR UNVRSL LOW-MUX 40-DIP |
| 产品培训模块： | LCD Driver I²C Bus Fundamentals |
| 标准包装： | 9 |
| 显示器类型： | LCD |
| 配置： | 7 段 + DP，14 段（24 段） |
| 接口： | I²C |
| 电流 - 电源： | 30µA |
| 电源电压： | 2.5 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 40-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 40-DIP |
| 包装： | 管件 |
| 产品目录页面： | 844 (CN2011-ZH PDF) |
| 其它名称： | 568-1069-5 933865310112 PCF8566PN |
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NXP Semiconductors
PCF8566
Universal LCD driver for low multiplex rates
Table 5.
Preferred LCD drive modes: summary of characteristics
V off ( RMS )
V on ( RMS )
V on ( RMS )
LCD drive mode Number of:
Backplanes
Bias levels
LCD bias
con?guration
--------------------------
V LCD
-------------------------
V LCD
D = --------------------------
V off ( RMS )
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
A practical value for V LCD is determined by equating V off(RMS) with a de?ned LCD
threshold voltage (V th ), typically when the LCD exhibits approximately 10 % contrast. In
the static drive mode a suitable choice is V LCD > 3V th .
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.
1
Bias is calculated by ------------- , where the values for a are
1 + a
a = 1 for 1 ? 2 bias
a = 2 for 1 ? 3 bias
The RMS on-state voltage (V on(RMS) ) for the LCD is calculated with the equation
--- + ( n – 1 ) × ? ------------- ?
1
1
V on ( RMS ) =
V LCD
2
n ? 1 + a ?
------------------------------------------------------------
n
(1)
where V LCD is the resultant voltage at the LCD segment and where the values for n are
n = 1 for static mode
n = 2 for 1:2 multiplex
n = 3 for 1:3 multiplex
n = 4 for 1:4 multiplex
The RMS off-state voltage (V off(RMS) ) for the LCD is calculated with the equation:
a – ( 2a + n )
---------------------------------
n × ( 1 + a )
V off ( RMS ) =
V LCD
2
2
(2)
Discrimination is the ratio of V on(RMS) to V off(RMS) and is determined from the equation:
V on ( RMS )
( a + 1 ) + ( n – 1 )
--------------------------------------------
( a – 1 ) + ( n – 1 )
------------------------ =
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
PCF8566_7
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 07 — 25 February 2009
8 of 48
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCF8566PN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LCD Display Driver |
| PCF8566T | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates |
| PCF8566T/1 | 制造商:NXP Semiconductors 功能描述:LCD DRIVER LOW-MUX 40VSOP 制造商:NXP Semiconductors 功能描述:LCD DRIVER, LOW-MUX, 40VSOP 制造商:NXP Semiconductors 功能描述:LCD DRIVER, LOW-MUX, 40VSOP; No. of Digits / Alpha:6; No. of Segments:14; Driver Case Style:VSO; No. of Pins:40; Supply Voltage Min:2.5V; Supply Voltage Max:6V; Interface Type:I2C; Operating Temperature Min:-40C; Operating ;RoHS Compliant: Yes |
| PCF8566T/1,112 | 功能描述:LCD 驱动器 96 SGMT LCD SGMT DRV 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 |
| PCF8566T/1,118 | 功能描述:LCD 驱动器 LCD DVR UNVRSL LOW-MUX 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 |
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