Rev. 1.40
�34
De�e��e� 1�� �01�
Rev. 1.40
�3�
De�e��e� 1�� �01�
BS67F340/BS67F350/BS67F360/BS67F370
Enhanced Touch A/D Flash MCU with LCD Driver
BS67F340/BS67F350/BS67F360/BS67F370
Enhanced Touch A/D Flash MCU with LCD Driver
Touch Key Scan Operation Flow Chart
Sta�t
W�ite Ref. OSC Capa�ito�
to TKMnROH/TKMnROL
Tou�h Key Manual S�an Ope�ation Sta�t
Set Sta�t �it TKST 0
1
Busy flag TKBUSY=1
All Ti�e Slot
Counte� ove�flow ?
TKRCOV=0
Initiate Ti�e Slot &
16-bit C/F Counter
All Ti�e Slot &
16-bit C/F Counter
Sta�t to �ount
Ti�e Slot &
16-bit C/F Counter
Keep �ounting
TKRCOV=1
Tou�h key �usy flag
TKBUSY=0
Gene�ate Inte��upt
�equest flag
Read C/F counter from
TKMn16DH/TKMn16DL
Tou�h key s�an end
Set TKST �it 1
0
End
Touch Key Manual Scan Mode Flow Chart – TKMOD=1, TSCS=0