Datasheet

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TSC2000
SBAS257
FIGURE 17. Z-Coordinate Reading Controlled by Host.
Screen
Touch
Issue Interrupt
PENIRQ
Go to Host-Controlled
Conversion
Host-Controlled
Z-Coordinate
No
Reset PENIRQ
No
Is Panel Voltage
Stabilization Done
Turn On Drivers: Y+, X–
Turn On Drivers: Y+, X–
No
Yes
Yes
Yes
Is Data
Averaging Done
No
Is Data
Averaging Done
Convert Z
1
-Coordinates
Start Clock
Start Clock
Power Up A/D Converter
Is PSM = 1
Done
Done
Host Writes A/D
Converter
Control Register
Reset PENIRQ
Host Writes A/D
Converter
Control Register
Done
Convert Z
2
-Coordinates
No
Yes
Is Data
Averaging Done
Store Z
2
-Coordinates
in Z
2
-Register
Power Down A/D Converter
Turn Off Clock
Issue Data Available
Store Z
1
-Coordinates
in Z
1
-Register