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PDF TTP229-LSF Data sheet ( Hoja de datos )
| Número de pieza | TTP229-LSF | |
| Descripción | 16 KEYS OR 8 KEYS TOUCH PAD DETECTOR IC | |
| Fabricantes | TONTEK | |
| Logotipo |  |
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Preliminary
TTP229-LSF
TonTouchTM
16 KEYS OR 8 KEYS TOUCH PAD DETECTOR IC
GENERAL DESCRIPTION
The TTP229-LSF TonTouchTM IC is capacitive sensing design specifically for touch pad controls.
The device built in regulator for touch sensor. Stable sensing method can cover diversity conditions.
Human interfaces control panel links through non-conductive dielectric material. The main application
is focused at replacing of the mechanical switch or button. The ASSP can independently handle the 8
touch pads or up to 16 touch pads.
FEATURES
Operating voltage：2.4V~5.5V
Built-in regulator
Stand-by current
At 3V, and sleep mode slow sampling rate 8Hz：
=> Typical 2.5uA for 16 input keys
=> Typical 2.0uA for 8 input keys
Provides to set 8 direct keys or 16 direct keys by option
Provides to set 8 separate outputs only for 8 direct input keys mode
Has I2C-bus slave interface, both can use for 8 and 16 direct input keys mode
TTP229-LSF Slave Device Identifier and Address => [1010 111R]
8 separate outputs can select output driving types by option
(CMOS/OD/OC with active high/low)
Offer multi-key or single-key feature by option
Provides two kinds of sampling rate that slow sampling rate 8Hz
and fast sampling rate 64Hz at sleep mode
Have the maximum key-on time about 80sec by pin option
Sensitivity can adjust by the capacitance(1~50pF) outside
After power-on have about 0.5sec stable-time,
During the time do not touch the key pad, and all functions are disabled
Auto calibration for environment changing
And the re-calibration period is about 4.0sec, when all keys are not activated for fixed time
APPLICATION
Wide consumer products
Button key replacement
本資料為通泰積體電路股份有限公司專有之財產，非經書面許可不准透露或使用本資料，亦不准複印、複製或轉變成任何其他形式使用
The information contained herein is the exclusive property of TONTEK and shall not be distributed, reproduced or disclosed in whole or in part without
prior written permission of TONTEK
10’/02/25
Page 1 of 18
Ver : 1.0
Free Datasheet http://www.Datasheet4U.com
1 page  
Preliminary
ELECTRICAL CHARACTERISTICS
‧Absolute Maximum Ratings
Parameter
Symbol
Operating Temperature
TOP
Storage Temperature
TSTG
Power Supply Voltage
VDD
Input Voltage
Human Body Mode
VIN
ESD
Note：VSS symbolizes for system ground
Conditions
─
─
Ta=25°C
Ta=25°C
─
TTP229-LSF
TonTouchTM
Value
-40 ~ +85
-50 ~ +125
VSS-0.3 ~ VSS+6.0
VSS-0.3 to VDD+0.3
6
Unit
℃
℃
V
V
KV
‧DC/AC Characteristics：(Test condition at room temperature=25℃)
Parameter
Symbol
Test Condition
Min. Typ. Max. Unit
Operating Voltage
VDD
2.4 - 5.5 V
Internal Regulator Output VREG
2.2 2.3 2.4 V
Operating Current
(no load)
Stand-by Current
(VDD=3.0V)
(Sampling length 4.0mS)
IOP VDD=3.0V
Sampling rate Set 8-Keys
8Hz Set 16-Keys
ISD Sampling rate Set 8-Keys
64Hz
Set 16-Keys
20 uA
2.0
2.5
5.5 uA
9.0
Input Ports
VIL Input Low Voltage
0 - 0.2 VDD
Input Ports
VIH Input High Voltage
0.8 - 1.0 VDD
Output Port Sink Current
IOL VDD=3V, VOL=0.6V
- 8 - mA
Output Port Source Current IOH VDD=3V, VOH=2.4V
- -4 - mA
Wake-up Response Time
(at sleep mode)
Output Response Time
(at operation)
Maximum Key-on Time
TWU
TR
TMOT
VDD=3V, Sampling rate 8Hz
VDD=3V, Sampling rate 64Hz
VDD=3V, set 16-keys
VDD=3V, set 8-keys
50
125
15.6
32
16
80 110
mS
mS
mS
mS
Sec
Input Pin Pull-low Resistor
(TEST)
RPL VDD=3V,
30K ohm
本資料為通泰積體電路股份有限公司專有之財產，非經書面許可不准透露或使用本資料，亦不准複印、複製或轉變成任何其他形式使用
The information contained herein is the exclusive property of TONTEK and shall not be distributed, reproduced or disclosed in whole or in part without
prior written permission of TONTEK
10’/02/25
Page 5 of 18
Ver : 1.0
Free Datasheet http://www.Datasheet4U.com
5 Page 
Preliminary
TTP229-LSF
TonTouchTM
4. Key operating mode
The TTP229-LSF has the Single-key and Multi-key functions. These functions are set by TP3(SKMS1)
and TP4(SKMS0) pins. The all 16 keys can use one group, or the 16 keys can distributed into two
groups. The group-1 includes TP0, TP1, TP2, TP3, TP8, TP9, TP10, TP11 keys. The group-2 includes
TP4, TP5, TP6, TP7, TP12, TP13, TP14, TP15 keys. How to set the function? Please see below table
4-1：
Table 4-1. The functions of TP3(SKMS1) and TP4(SKMS0) option
TP3 TP4
Operating function
(SKMS1) (SKMS0)
11
All Single-keys：one group(16keys)
1 0 Two groups operate：group-1=>Single key；group-2=>Single key
0 1 Two groups operate：group-1=>Single key；group-2=>Multi key
00
All Multi-keys：one group(16 keys)
Note：1. One group：TP0~TP15.
Two groups：Group-1=>TP0,TP1,TP2,TP3,TP8,TP9,TP10,TP11.
Group-2=>TP4,TP5,TP6,TP7,TP12,TP13,TP14,TP15.
2. When uses 8 input keys mode. The using keys are TP0~TP7.
3. The option states of TP3 and TP4, the〝0〞state is used a high-value resistor connected to
VSS, the〝1〞state is not used resistor connected to VSS.
4. The key detection acknowledges in Single-key function, the priority is by the key scanning
order (from TP0 to TP15) when many keys are touched effectively. It is not by the key
touching strength.
5. Wake-up sampling rate and sampling length at sleep mode
The TTP229-LSF has two kinds of sampling rate at sleep mode. These are 8Hz and 64Hz. The two
functions are selected by TP5(SLWPTM) pin. The TP5(SLWPTM) pin has used a high-value resistor
connected to VSS, it selected the 64Hz sampling rate. Another it is 8Hz that is not used resistor
connected to VSS. The 8Hz sampling is the default.
And TTP229-LSF has two kinds of sampling length at sleep mode. They are 4ms and 2ms that are
selected by TP6(WPSCT) pin. The default is 4ms that TP6(WPSCT) pin is not used resistor connected to
VSS. Another it is 2ms that TP6 pin has used a high-value resistor connected to VSS.
Wake-up sampling timing and length in the sleep mode：
8Hz=>125ms
or
64Hz=>15.6ms
4.0ms or 2.0ms
Wake-up
Detect
clock
本資料為通泰積體電路股份有限公司專有之財產，非經書面許可不准透露或使用本資料，亦不准複印、複製或轉變成任何其他形式使用
The information contained herein is the exclusive property of TONTEK and shall not be distributed, reproduced or disclosed in whole or in part without
prior written permission of TONTEK
10’/02/25
Page 11 of 18
Ver : 1.0
Free Datasheet http://www.Datasheet4U.com
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet TTP229-LSF.PDF ] | |
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