Four Touch Key -- BS83A04A-3

Four Touch Key
BS83A04A-3
Touch Key
Flash MCU
Characteristics
 Touch Key MCU : BS83A04A-3 10MSOP
8-bit Flash type MCU
 System clock : Internal RC OSC HIRC (8MHz) / LIRC (32KHz)
 8 bidirectional I/O lines
 102416 Flash Program Memory
 968 RAM Data Memory
 Single external interrupt input shared with an I/O line
 Watchdog Timer
 4-level subroutine nesting
 Single 8-bit Timer / Event Counter
 Single Time-Base functions for generation of fixed time interrupt signals
 Four touch key functions
BS83A04A-3
Application Areas
Consumer Products, Home Appliances, Industrial Control, Health Care Products, etc.
Application Circuit
VBAT
J1
VDD
R5
1
2
0
BT1
BATTERY
CON2
C1
10UF
KEY1
C2
0.1UF
VDD
1
KEY2
1
KEY3
1
J2
U1
1
2
3
4
5
VDD
PA5/KEY1
PA1/KEY2
PA3/KEY3
PA4/KEY4
VSS
PA2
PA0/INT
PA6
PA7
1
2
3
4
5
10
9
8
7
6
CON5
BS83A04A_1OMSOP
VBAT
KEY4
1
R1
4.7K
R2
4.7K
R3
4.7K
R4
4.7K
D1
LED
D2
LED
D3
LED
D4
LED