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TTP225 Datasheet(PDF) 2 Page - Tontek Design Technology

Part # TTP225
Description  8 KEYS TOUCH PAD DETECTOR IC
PDF  15 Pages
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Manufacturer  TONTEK [Tontek Design Technology]
Direct Link  http://www.tontek.com.tw
Logo TONTEK - Tontek Design Technology

TTP225 Datasheet(HTML) 2 Page - Tontek Design Technology

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Preliminary
TTP225
TonTouchTM
09’/08/25
Page 2 of 15
Ver : 1.3
BLOCK DIAGRAM FOR DIRECT MODE :
TEST
Sensitivity selection
OPW1
OPW0
OPST
OPT1
OPT0
OPS1=1
OPS0=1
DV
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
Key-on
timing
driver
&
selection
8 outputs
key
de-bounce
8 Sets
SLSE5
SLSE4
SLSE3
SLSE2
SLSE1
SLSE0
OSC1
control
System timing
Sensor OSC2
Key Detection
I7
I6
I5
I4
I3
I2
I1
I0
Reference OSC1
Switch
Scan &
Inputs
BLOCK DIAGRAM FOR SERIAL INTERFACE MODE :
TEST
OPS1=0
CK(Q7)
DV
RST(Q6)
DO(Q0)
Sensitivity selection
OPW1
OPW0
OPST
OPT1
OPT0
OPS0=1
Key-on
timing
driver
&
selection
8 outputs
key
de-bounce
8 Sets
SLSE5
SLSE4
SLSE3
SLSE2
SLSE1
SLSE0
OSC1
control
System timing
Sensor OSC2
Key Detection
I7
I6
I5
I4
I3
I2
I1
I0
Reference OSC1
Switch
Scan &
Inputs



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