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ST7773 Datasheet(PDF) 23 Page - Sitronix Technology Co., Ltd.

Part # ST7773
Description  262K Color Single-Chip TFT Controller/Driver
PDF  128 Pages
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Manufacturer  SITRONIX [Sitronix Technology Co., Ltd.]
Direct Link  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7773 Datasheet(HTML) 23 Page - Sitronix Technology Co., Ltd.

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ST7773
Ver. 2.0
2008-07-07
23
9. Function description
9.1 Interface type selection
The selection of given interfaces are done by setting IM2, IM1, and IM0 pins as shown in following table.
Table 9.1.1 Selection of MCU interface
IM2
IM1
IM0
Interface
Read back selection
0
-
-
3-line serial interface
Via the read instruction
1
0
0
8080 MCU 8-bit parallel
RDX strobe (8-bit read data and 8-bit read parameter)
1
0
1
8080 MCU 16-bit parallel
RDX strobe (16-bit read data and 8-bit read parameter)
1
1
0
8080 MCU 9-bit parallel
RDX strobe (9-bit read data and 8-bit read parameter)
1
1
1
8080 MCU 18-bit parallel
RDX strobe (18-bit read data and 8-bit read parameter)
Table 9.1.2 Pin connection according to various MCU interface
IM2
IM1
IM0
Interface
RDX
WRX
D/CX
Read back selection
0
-
-
3-line serial interface
Note1
Note1
SCL
D[17:1]: unused, D0: SDA
1
0
0
8080 8-bit parallel
RDX
WRX
D/CX
D[17:8]: unused, D7-D0: 8-bit data
1
0
1
8080 16-bit parallel
RDX
WRX
D/CX
D[17:16]: unused, D15-D0: 16-bit data
1
1
0
8080 9-bit parallel
RDX
WRX
D/CX
D[17:9]: unused, D8-D0: 9-bit data
1
1
1
8080 18-bit parallel
RDX
WRX
D/CX
D17-D0: 18-bit data
Note 1. Unused pins must be connected to DGND or VDDI.
9.2 Write cycle sequence
The write cycle means that the host writes information (command or/and data) to the display via the interface. Each write
cycle (WRX high-low-high sequence) consists of 3 control signals (D/CX, RDX, WRX) and data signals (D[17:0]). D/CX bit
is a control signal, which tells if the data is a command or a data. The data signals are the command if the control signal is
low (=’0’) and vice versa it is data (=’1’).
Fig. 9.2.1 8080-series WRX protocol
Note: WRX is an unsynchronized signal (It can be stopped).



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