参数资料
型号: PCA85132U/2DA/Q1,0
厂商: NXP Semiconductors
文件页数: 42/62页
文件大小: 0K
描述: IC LCD DRIVER 32 UNCASED
标准包装: 600
显示器类型: LCD
配置: 多重
接口: I²C
数字或字符: 任何数字类型
电流 - 电源: 60µA
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 95°C
封装/外壳: 模具
供应商设备封装: 模具
包装: 散装
NXP Semiconductors
6
R PU(max)
(k Ω )
5
4
3
2
1
0
PCA85132
LCD driver for low multiplex rates
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20
60
100
140
180
220
260
300
340
380
420
460
500
C b (pF)
Fig 30. Values for R PU(max)
6
R PU(min)
(k Ω )
5
4
3
2
1
0
001aak440
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
V DD (V)
Fig 31. Values for R PU(min)
14.2 ITO track resistance
If an application requires to have a low V DD supply voltage compared to the V LCD supply
voltage, it is recommended to increase the ITO resistance on the V LCD supply track in
order to reduce the noise induced on the V SS line when display is enabled. A low V DD
voltage supply and noise peaks on V SS induced by display activities may introduce
disturbances into the I 2 C communication with the microcontroller.
Figure 32 shows that, when the ITO resistance of the V SS pin has a certain value, it is
indicated to have a higher ITO resistance on the V LCD track, especially if V LCD (for
example, 9 V) is sharply higher than V DD (for example, 1.8 V). With a higher ITO
resistance on the V LCD track, the noise spikes induced to the V SS of the PCA85132 are
getting smaller and the functionality is less affected.
PCA85132
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 11 July 2013
? NXP B.V. 2013. All rights reserved.
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