Datasheet

www.ti.com
Turn On Drivers: Y+, Y-
Issue Interrupt
PENIRQ
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
Reset PENIRQ and Scan
Trigger
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
Is Data
Averaging
N
Y
Y
N
Y
N
Y
Y
N
N
Y
Y
N
Done
Done
TSC2301
SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004
Touch Screen Scan X and Y PENIRQ Initiated
Figure 51. X & Y Coordinate Touch Screen Scan, Initiated by Touch
41