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XPT7603 Datasheet(PDF) 20 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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9.3
High-Speed Mode
When the host sent data "00001XXX", was received XPT7603 after having to wait for the host response,
XPT7603 will enter the high-speed mode (serial rate can 3.4Mhz), until the host issued a STOP signal.
High-speed mode, the format command to read and write standard mode and fast mode is the same as the
order in writing after the STOP signal can not be made, otherwise the end of high-speed mode.
9.4
Digital Timing
Figure 8 XPT7603 Digital Interface
Table 7 timing specification
+VDD = 2.7V, CLOAD = 50pF
Unit
Serial
Number
Instruction
Test Condition
Min
Max
fSCL
SCL Clock Frequency
Standard Mode
Fast Mode
High-Speed Mode, Cb = 100pF max
High-Speed Mode, Cb = 400pF max
0
0
0
0
100
400
3.4
1.7
kHz
kHz
MHz
MHz
tBUF
Bus Free Time Between a STOP and Start
Condition
Standard Mode
Fast Mode
4.7
1.3
µ
s
µ
s
tHD; STA
Hold Time (Repeated) START Condition
Standard Mode
Fast Mode
High-Speed Mode
4.0
600
160
µs
ns
ns
tLOW
LOW Period of the SCL Clock
Standard Mode
Fast Mode
High-Speed Mode, Cb = 100pF max
High-Speed Mode, Cb = 400pF max
4.7
1.3
160
320
µs
µs
ns
ns
tHIGH
HIGH Period of the SCL Clock
Standard Mode
Fast Mode
High-Speed Mode, Cb = 100pF max
High-Speed Mode, Cb = 400pF max
4.0
600
60
120
µs
ns
ns
ns
tSU; STA
Setup Time for a Repeated START Condition
Standard Mode
Fast Mode
High-Speed Mode
4.7
600
160
µs
ns
ns
tSU; DAT
Data Setup Time
Standard Mode
Fast Mode
High-Speed Mode
250
100
10
ns
ns
ns
tHD; DAT
Data Hold Time
Standard Mode
Fast Mode
High-Speed Mode, Cb = 100pF max
High-Speed Mode, Cb = 400pF max
0
0
0
0
3.45
0.9
70
150
µs
µs
ns
ns
trCL
Rise Time of SCL Signal
Standard Mode
Fast Mode
High-Speed Mode, Cb = 100pF max
20 + 0.1Cb
10
1000
300
40
ns
ns
ns




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