TTP226 Datasheet, PDF (1/15 Pages) Tontek Design Technology – 8 KEYS TOUCH PAD DETECTOR IC

Preliminary
TTP226
TonTouch^TM
8 KEYS TOUCH PAD DETECTOR IC
GENERAL DESCRIPTION
The TTP226 TonTouch^TM 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 mode、matrix 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 11
I1 12
TTP226
I0 13 ^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
10’/01/13
Page 1 of 15
Ver : 1.3