Toshiba TLCS-900/H1 Series Manual page 492

P96/INT4 pin
Reset the debounce time counter
INT4
Start the debounce time counter
Debounce time
The debounce time counter matches with a
specified debounce time, which generates an
INT4 interrupt.
No INT4 interrupt is generated due to edge interrupt even though
the debounce time counter matches a specified debounce time.
Figure 3.19.4 Timing diagram of debounce circuit
Debounce time
After the pen is released, an INT4 interrupt can
be received again.
92CF30-490
TMP92CF30
Debounce time
2009-06-12