参数资料
型号: PCF8534AU/DA/1,026
厂商: NXP Semiconductors
文件页数: 38/52页
文件大小: 0K
描述: IC LCD DISPLAY DVR 60SEG
标准包装: 720
显示器类型: LCD
配置: 60 段
接口: I²C
电流 - 电源: 8µA
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 模具
供应商设备封装: 模具
包装: 托盘 - 晶粒
NXP Semiconductors
Table 22.
SYNC contact resistance
PCF8534A
Universal LCD driver for low multiplex rates
Number of devices
2
3 to 5
6 to 10
11 to 16
Maximum contact resistance
6000 ?
2200 ?
1200 ?
700 ?
The PCF8534A can always be cascaded with other devices of the same type or
conditionally with other devices of the same family. This allows optimal drive selection for
a given number of pixels to display. Figure 22 and Figure 24 show the timing of the
synchronization signals.
BP0
T fr =
1
f fr
SYNC
BP0
(1/2 bias)
BP0
(1/3 bias)
SYNC
BP0
(1/3 bias)
SYNC
BP0
(1/3 bias)
SYNC
(a) static drive mode.
(b) 1:2 multiplex drive mode.
(c) 1:3 multiplex drive mode.
(d) 1:4 multiplex drive mode.
mgl755
Fig 24. Synchronization of the cascade for various PCF8534A drive modes
In a cascaded configuration, only one PCF8534A master must be used as clock source.
All other PCF8534A in the cascade must be configured as slave such that they receive
the clock from the master.
PCF8534A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 25 July 2011
? NXP B.V. 2011. All rights reserved.
38 of 52
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