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TTP258 Datasheet(PDF) 39 Page - Tontek Design Technology

Part # TTP258
Description  Preliminary
PDF  44 Pages
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Manufacturer  TONTEK [Tontek Design Technology]
Direct Link  http://www.tontek.com.tw
Logo TONTEK - Tontek Design Technology

TTP258 Datasheet(HTML) 39 Page - Tontek Design Technology

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Preliminary
TTP258
TonTouch
TM
16’/04/06
Page 39 of 44
Ver.: 1.2
MCKS[20EH]: Modulation clock selector register [R/W], default value [0111]
Register
Bit3
Bit2
Bit1
Bit0
Bit Name
-
MCKS2
MCKS1
MCKS0
Read/Write
-
R/W
R/W
R/W
MCKS2~MCKS0: Modulation clock selector
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
Bit3
Bit2
Bit1
Bit0
Bit Name
TPEN3
TPEN2
TPEN1
TPEN0
Read/Write
R/W
R/W
R/W
R/W
TPEN3~TPEN0: Touch pad channel selector 1st nibble
TPCHS1[210H]: Touch pad channel selector register1 [R/W], default value [0000]
Register
Bit3
Bit2
Bit1
Bit0
Bit Name
TPEN7
TPEN6
TPEN5
TPEN4
Read/Write
R/W
R/W
R/W
R/W
TPEN7~TPEN4: Touch pad channel selector 2nd nibble
TPCHS2[211H]: Touch pad channel selector register2 [R/W], default value [0000]
Register
Bit3
Bit2
Bit1
Bit0
Bit Name
-
-
TPEN9
TPEN8
Read/Write
-
-
R/W
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.
MCKS2 ~ MCKS0
Sample time MCKS2 ~ MCKS0 Sample time
000
OSCH/1
100
OSCH/16
001
OSCH/2
101
OSCH/32
010
OSCH/4
110
OSCH/64
011
OSCH/8
111
OSCL



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