TTP258
TonTouchTM
Preliminary
MCKS[20EH]: Modulation clock selector register [R/W], default value [0111]
Register
Bit Name
Read/Write
Bit3
Bit2
MCKS2
R/W
Bit1
MCKS1
R/W
Bit0
MCKS0
R/W
-
-
MCKS2~MCKS0: Modulation clock selector
MCKS2 ~ MCKS0 Sample time MCKS2 ~ MCKS0 Sample time
000
001
010
011
OSCH/1
OSCH/2
OSCH/4
OSCH/8
100
101
110
111
OSCH/16
OSCH/32
OSCH/64
OSCL
The TPCMPF will be set as no modulation clock going into duty counter
with de-bounce feature and will also call the interrupt as TPCMPIE=1 .
TPCHS0[20FH]: Touch pad channel selector register0 [R/W], default value [0000]
Register
Bit Name
Read/Write
Bit3
TPEN3
R/W
Bit2
TPEN2
R/W
Bit1
TPEN1
R/W
Bit0
TPEN0
R/W
TPEN3~TPEN0: Touch pad channel selector 1st nibble
TPCHS1[210H]: Touch pad channel selector register1 [R/W], default value [0000]
Register
Bit Name
Read/Write
Bit3
TPEN7
R/W
Bit2
TPEN6
R/W
Bit1
TPEN5
R/W
Bit0
TPEN4
R/W
TPEN7~TPEN4: Touch pad channel selector 2nd nibble
TPCHS2[211H]: Touch pad channel selector register2 [R/W], default value [0000]
Register
Bit Name
Read/Write
Bit3
Bit2
Bit1
TPEN9
R/W
Bit0
TPEN8
R/W
-
-
-
-
TPEN9~TPEN8: Touch pad channel selector 3rd nibble
As program writes the TPCHS0 register hardware automatically discharges
the external capacitor and enables the sensor clock input until period end.
16’/04/06
Page 39 of 44
Ver.: 1.2
TTELEC [ TT Electronics ]
