參數(shù)資料
型號: HD66523R
廠商: Hitachi,Ltd.
英文描述: 240-Channel Common Driver with Internal LCD Timing Circuit(帶內(nèi)部LCD定時電路的240通道驅動器)
中文描述: 240頻道共同的內(nèi)部LCD定時電路(帶內(nèi)部液晶定時電路的240通道驅動器驅動程序)
文件頁數(shù): 12/30頁
文件大?。?/td> 139K
代理商: HD66523R
HD66523R
12
Internal Function Description
1. Generation of Signals CL1 and FLM:
Signal CL1 shifts the scanning signal of the common driver. It
is a 50% duty-ratio clock that changes level synchronously with the rising edge of oscillator clock CR.
FLM is a clock signal that goes high once every frame. One frame consists of display lines, 240 lines if
DUTY is high and 200 lines if DUTY is low, and vertical retrace period which is set with BP4 to BP0.
2. Auto Display-off Control:
This functions prevents incorrect display after reset release. The display is
turned off four frames following after reset release. In addition, the display off control signal shown in
Figure 4 is output by pin
DOC
. This pin is connected to pin
DISPOFF
of the HD66522.
240
(200)
1
2
Vertical retrace period
CR
CL1
FLM
Figure 3 Generation of Signals CL1 and FLM
RESET
FLM
DOC
1
2
3
4
5
Figure 4 Automatic Display-off Control Function
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