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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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ST7713 数据表(PDF) 28 Page - Sitronix Technology Co., Ltd. |
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ST7713 数据表(HTML) 28 Page - Sitronix Technology Co., Ltd. |
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28 / 159 page  ST7713 Ver 1.6 2008-05 28 9.2.2 Read cycle sequence The read cycle (RDX high-low-high sequence) means that the host reads information from LCD driver via interface. The driver sends data (D[17:0]) to the host when there is a falling edge of RDX and the host reads data when there is a rising edge of RDX. Fig. 9.2.3 8080-series RDX protocol Note: RDX is an unsynchronized signal (It can be stopped). CMD DM PA CMD DM & data Data Data S P CMD DM PA CMD DM & data Data Data S P D[17:0] RESX CSX D/CX RDX WRX D[17:0] Host D[17:0] Host to LCD Driver D[17:0] LCD to Host “1” Hi-Z Read parameter Read display data CMD: write command code PA: parameter or display data Signals on D[17:0], D/CX, R/WX, E pins during CSX=1 are ignored. DM PA1 DM & data PAN-2 PAN-1 P S CMD CMD S P Hi-Z Hi-Z Hi-Z Fig. 9.2.4 8080-series parallel bus protocol, read data from register or display RAM |
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