BS85B12-3 HOLTEK [Holtek Semiconductor Inc], BS85B12-3 Datasheet - Page 113

• Manufacturer Part Number: BS85B12-3
• Description: Touch Key Flash Type 8-Bit MCU with LCD/LED Driver
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

BS85B12-3/BS85C20-3
Touch Key Flash MCU with LCD/LED Driver
Rev. 1.00
Bits 7~4
Bits 3~0
Name
POR
R/W
Bit
TKMnC1 Register
MnK4OEN MnK3OEN MnK2OEN MnK1OEN
R/W
MnK4OEN~ MnK1OEN: key selector control
I/O Pin or Touch Key Function Select
7
0
MnK4OEN
MnK3OEN
MnK2OEN
MnK1OEN
MnK4IO
MnK3IO
MnK2IO
MnK1IO
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
R/W
6
0
Key 4
Key 3
Key 2
Key 1
PC3/Key 4
PC2/Key 3
PC1/Key 2
PC0/Key 1
M0
M0
M0
M0
M0
M0
M0
M0
R/W
5
0
Key 8
Key 7
Key 6
Key 5
M1
M1
M1
M1
PC7/Key 8
PC6/Key 7
PC5/Key 6
PC4/Key 5
R/W
107
4
0
Disable
Disable
Disable
Disable
Key 12
Key 11
Key 10
M1
M1
M1
M1
Enable
Enable
Enable
Enable
Key 9
M2
M2
M2
M2
For the BS85B12-3 n=0~2 while for the BS85C20-3 n=0~4.
Touch Key
Touch Key
Touch Key
Touch Key
I/O pin
I/O pin
I/O pin
I/O pin
MnK4IO
Key 16
Key 15
Key 14
Key 13
R/W
PD3/Key 16
PD2/Key 15
PD1/Key 14
PD0/Key 13
3
0
M3
M3
M3
M3
M3
M3
M3
M3
Key 20
Key 19
Key 18
Key 17
MnK3IO
M4
M4
M4
M4
R/W
2
0
PD7/Key 20
PD6/Key 19
PD5/Key 18
PD4/Key 17
M4
M4
M4
M4
MnK2IO
R/W
1
0
February 1, 2011
MnK1IO
R/W
0
0