MK712 Datasheet, PDF (3/16 Pages) Integrated Circuit Systems – Touch Screen Controller

I CR O C LOC K
IC Operation
(Periodic Conversions Enabled)
MK712
Touch Screen Controller
Power ON
Is
Screen
N
Touched?
Y
Write D4, D5 Reg 0 And
D2, D3 Reg 1 To 1
Issue Interrupt
(If Enabled)
Convert
Y Co-Ordinates
Store Y Co-Ordinates In
Reg 4 and Reg 5
Convert
X Co-Ordinates
Store X Co-Ordinates in
Reg 2 and Reg 3
Write D7 Reg 0 To 1
Issue Interrupt
(If Enabled)
Is
Screen
Y
Touched?
N
Write D4, D5 Reg 0 And
D2, D3 Reg 1 To 0
Issue Interrupt
(if Enabled)
MDS 712 I
3
Revision 100899 Printed 11/16/00
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