Datasheet

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Issue Interrupt
PENIRQ
Turn On Drivers: Y+, Y-
Is PENSTS =1
Start Clock
Is Panel Voltage
Stabilization Done
Convert Y coordinates
Store Y Coordinates in Y
Register
Is Screen Touched
Turn On Drivers: X+, X-
Is Panel Voltage
Stabilization Done
Convert X coordinates
Store X Coordinates in X
Register
Set /DAV = 0
Is Screen Touched
Turn off clock
Screen
Touch
Done
Go To Host Controlled
Conversion
N
Turn off clock
Reset PENIRQ and Scan
Trigger
Done
Power up ADC
Power Down ADC
Power up ADC
Power Down ADC
Is Data
Averaging
Done
Is Data
Averaging
Done
N
Y
N
Y
N
Y
N
N
Y
Y
N
Done
Host Writes A/D
Converter
Control Register
Reset PENIRQ
Y
TSC2301
SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004
Touch Screen Scan X and Y Host Initiated
Figure 53. X and Y Coordinate Touch Screen Scan, Initiated by Host
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