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XPT7603 Datasheet(HTML) 18 Page - List of Unclassifed Manufacturers

Part No. XPT7603
Description  4-wire resistive touch screen controller
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Maker  ETC2 [List of Unclassifed Manufacturers]
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XPT7603 Datasheet(HTML) 18 Page - List of Unclassifed Manufacturers

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9.1
Write Command
Order timing, as shown in Figure 12.
Figure 1 I2C interface write command timing diagram
First byte for byte address:
Table 4 address byte
Bit7 (MSB)
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0(LSB)
1
0
0
1
0
A1
A0
R/W
The lowest R / W (bit0), said write command is 0, 1, said read command
A0 (Bit1), A1 (bit2) control bit for the hardware address (Note: MSOP10 package, only A0), which
must be two and chip 13 feet, 14 feet in line-level to the corresponding selection XPT7603.
The highest 5-bit address for the software, you must enter a fixed code "10010", as shown in
Figure 12.
In the first byte received after all, XPT7603 No. 9 in the clock cycle, the issue of response signal
ACK (0-level), indicating that the data has been received.
Order to write the second byte for byte order:
Table 5 Command Byte
Bit7 (MSB)
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0(LSB)
C3
C2
C1
C0
PD1
PD0
M
X
C3, C2, C1, C0 - decided XPT7603 configuration of the input signal and the corresponding
measurement function, specifically as shown in table 3.
PD1, PD0 - used to control the internal reference voltage source and the pen interrupt signal, as
shown in table 6:
Table 6 PD1、PD0 Control Bit
PD1
PD0
PENIRQ
Function Discprition
0
0
Enable
Energy-saving mode, only in order to write the beginning of the second byte, the


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