Holtek BS83B24C Manual page 149

BS83B24C/BS83C40C
Touch Flash MCU
to Data Memo�� (Secto� 6 )
To�ch Ke� A�to Scan Ope�ation Sta�t
Sto�e C/� co�nte� val�e to
Time Slot &
No
16-�it C/� Co�nte�
Keep co�nting
Rev. 1.00
Sta�t
W�ite Ref. OSC inte�nal
Capacito� val�e
Set Sta�t �it TKST 0 1
B�s� flag TKBUSY=1
Load Ref. OSC inte�nal
Capacito� val�e f�om
Data Memo�� (Secto� 6 )
Data Memo�� (Secto� 5 )
Initiate Time Slot &
16-�it C/� Co�nte�
All Time Slot co�nte� &
16-�it C/� co�nte�
Sta�t to co�nt
All Time Slot
Co�nte� ove�flow ?
Yes
No
All ke� scan finish ?
Yes
Touch Key Auto Scan Mode Flowchart
149
To�ch ke� ��s� flag
TKBUSY=0
TKRCOV = 1
Gene�ate Inte���pt
�eq�est flag
To�ch ke� scan end
Set TKST �it 1
Read C/� co�nte� val�e f�om
Data Memo�� (Secto� 5)
Change next ke�
�e���a�� 0�� �01�
0
End