DETECTOR IC. TTP226 Datasheet

TTP226 IC. Datasheet pdf. Equivalent


TONTEK TTP226
Preliminary
TTP226
8 KEYS TOUCH PAD DETECTOR IC
GENERAL DESCRIPTION
The TTP222 is a touch pad detector IC which offers 8 touch keys. The touching detection
IC is designed for replacing traditional direct button key with fixed pad size. Low power
consumption and wide operating voltage are the contact key features for DC or AC application.
FEATURES
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Operating voltage 2.0V~5.5V
Operating current typical 100uA, max 160uA at VDD=3V
The output refresh rate about 55Hz at VDD=3V
64 steps sensitivity selectable (SLSE0~5 pin option)
Another have offer 2 kinds of base-step (OPST pin option)
Stable touching detection of human body for replacing traditional direct switch key
Provides direct modematrix mode and serial mode selected by pad option
Maximum 8 input pads and 8 outputs for direct mode;
Maximum 8 input pads for serial interface mode;
Maximum 8 input pads provide fixed 2*4 and 3*3 matrix types
Outputs can be selected active high or active low by pad option
After power-on have 0.8~1.0sec stable-time, during the time do not touch the
key-pad, And the function is disabled.
Auto calibration for life. And the re-calibration period is 0.8~1.0sec.
When all keys do not touched.
APPLICATION
ƒ Wide consumer products
ƒ Button key replacement
PACKAGE CONFIGURATION
OSC2
1
TOPAD
2
I7 3
I6 4
NC 5
NC 6
NC 7
I5 8
I4 9
I3 10
I2
I1
I0
11
12
13
TTP226
SSOP-48
OPW0
14
OPW1
15
OPT0
16
NC 17
OPT1
18
NC 19
NC 20
OSC1
21
VSS
22
VDD
23
OPS1
24
48 SLSE5
47 SLSE4
46 SLSE3
45 SLSE2
44 NC
43 SLSE1
42 NC
41 SLSE0
40 VSS
39 DV
38 Q7
37 Q6
36 Q5
35 Q4
34 Q3
33 Q2
32 NC
31 OPST
30 NC
29 Q1
28 Q0
27 TEST
26 AHL
25 OPS0
08’/06/10
Page 1 of 15
Ver : 1.1


TTP226 Datasheet
Recommendation TTP226 Datasheet
Part TTP226
Description 8 KEYS TOUCH PAD DETECTOR IC
Feature TTP226; Preliminary TTP226 8 KEYS TOUCH PAD DETECTOR IC GENERAL DESCRIPTION The TTP222 is a touch pad de.
Manufacture TONTEK
Datasheet
Download TTP226 Datasheet




TONTEK TTP226
Preliminary
BLOCK DIAGRAM FOR DIRECT MODE :
OSC2
TOPAD
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
System timing
control
8 Sets
key
de-bounce
Sensitivity selection
TTP226
8 outputs
selection
&
driver
Key-on
timing
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
DV
AHL
OPS0=1
OPS1=1
OPT0
OPT1
OPST
OPW0
OPW1
BLOCK DIAGRAM FOR SERIAL INTERFACE MODE :
OSC2
TOPAD
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
System timing
control
8 Sets
key
de-bounce
Sensitivity selection
8 outputs
selection
&
driver
Key-on
timing
DO(Q0)
RST(Q6)
CK(Q7)
DV
AHL
OPS0=1
OPS1=0
OPT0
OPT1
OPST
OPW0
OPW1
08’/06/10
Page 2 of 15
Ver : 1.1



TONTEK TTP226
Preliminary
BLOCK DIAGRAM FOR KEY-MATRIX MODE :
OSC2
TOPAD
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
System timing
control
8 Sets
key
de-bounce
Sensitivity selection
TTP226
8 outputs
selection
&
driver
Key-on
timing
Q0(SCN0)
Q1(SCN1)
Q2(SCN2)
Q3(SCN3)
Q4(SCN4)
Q5(SCN5)
DV
AHL
OPS0=0
OPS1
(3*3 or 2*4)
OPT0
OPT1
OPST
OPW0
OPW1
08’/06/10
Page 3 of 15
Ver : 1.1







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