TTP225 Datasheet, PDF (2/15 Pages) Tontek Design Technology – 8 KEYS TOUCH PAD DETECTOR IC

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