Touch Direct-Key LED BS83B16 + HT74164

Touch Direct-Key LED
BS83B16 + HT74164
Touch Key
Flash MCU
Characteristics
 Touch MCU : BS83B16 24SSOP ( 8-bit Flash type MCU)
 Up to 16 keys (KEY0~KEY15) Touch Key with integrated EEPROM
 Few peripheral components needed and high stability
 Excellent S/N ratio and stable touch control with 5mm thick acrylic case covering
the touch pad
DATA
CLK
CS
5V net
Buzzer
Control
I/O
16 Keys
POW
VDD,VSS
Vin= 16~6V
Power
Management
( HT7550 )
5V net
Operating Procedure
 Power on : Press power-on switch - emits a long beep and power LED (Red)




illuminated - displays shows 8312, -LEd for 1 sec, then ---- in standby
mode.
Press [F1] -- display shows F-01 for the following functions : Press the [0]~[9]
for display input - four digits max. [#] saves displayed digits - display will show
SEAL. [*] to delete displayed digit - display shows dELE. Press [F1] after
storing - display shows F-01 to save the digits, otherwise □□□□ will be
shown after deletion.
Press [F2] -- display shows F-02
Operates in similar way to above [F1] function.
Press [F3] -- display shows F-03
Operates in similar way to above [F1] function.
When [ ] is pressed for 2 seconds or no touch key is pressed for more than 3
minutes, four short Beeps are emitted and the system powered down.
Application Circuit