参数资料
型号: PCF8576T,118
厂商: NXP Semiconductors
文件页数: 9/44页
文件大小: 0K
描述: IC LCD DVR UNVRSL LOW-MUX 56VSO
标准包装: 500
显示器类型: LCD
配置: 8 段,15 段,160 元件
接口: I²C,2 线串口
数字或字符: 10 字符,20 字符,160 元件
电流 - 电源: 180µA
电源电压: 2 V ~ 9 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 56-BSOP(0.435",11.50mm 宽)
供应商设备封装: 56-VSOP
包装: 带卷 (TR)
其它名称: 933740730118
PCF8576TD-T
PCF8576TD-T-ND
Philips Semiconductors
Universal LCD driver for low multiplex rates
Product speci?cation
PCF8576
6.4
LCD drive mode waveforms
When three backplanes are provided in the LCD, the 1 : 3
The static LCD drive mode is used when a single
backplane is provided in the LCD. Backplane and segment
drive waveforms for this mode are shown in Fig.4.
multiplex drive mode applies, as shown in Fig.7.
When four backplanes are provided in the LCD, the 1 : 4
multiplex drive mode applies, as shown in Fig.8.
When two backplanes are provided in the LCD, the 1 : 2
multiplex mode applies. The PCF8576 allows use of
1 ? 2 bias or 1 ? 3 bias in this mode as shown in Figs 5 and 6.
T frame
BP0
V DD
LCD segments
V state1 ( t ) = V S n ( t ) – V BP0 ( t )
V on(rms) = V op
Sn
Sn 1
state 1
state 2
V LCD
V DD
V LCD
VDD
V LCD
V op
0
Vop
V op
0
Vop
state 1
(on)
(a) waveforms at driver
(b) resultant waveforms
at LCD segment
MBE539
state 2
(off)
V state2 ( t ) = V S
n + 1
( t ) – V BP0 ( t )
V off(rms) = 0 V
Fig.4 Static drive mode waveforms (V op = V DD ? V LCD ).
2001 Oct 02
9
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