Scheda tecnica MTCH102,5,8 Brief di Microchip Technology

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6‘ MICROCHIP

 2015 Microchip Technology Inc. Advance Information DS40001780A-page 1

MTCH102/105/108

Description

The Microchip mTouch® MTCH102/105/108 Proximity/Touch Controller with simple digital output provides an easy way

to add proximity and/or touch detection to any application. This device family implements capacitive sensors with active

guarding capability. The sensitivity and power mode can be configured through the MTSA and MTPM pins. The

MTCH102/105/108 devices also use an advanced optimization algorithm to actively suppress noise from the signal to

achieve reliable proximity/touch detection.

Features

• Capacitive Proximity and Touch Detection System:

- High Signal to Noise Ratio (SNR)

- Adjustable sensitivity with compensation for

different sensor sizes

- Multi-stage Active noise suppression filters

- Automatic environmental compensation

- Support for wide range of sensor shape and

size

• Simple I/O Interface with existing System

• Smart Scan Scheduling

• Threshold Hysteresis

• Flexible Low-Power mode

• Brown-Out Protection

• Operating Voltage Range: 2.05V to 3.6V

• Operating Temperature: -40°C to +85°C

Application

•Light Switch

• Portable Device Enabler

• White Goods and Appliance

• Office Equipment and Toys

• Display and Keypad Back-Lighting Activation

TABLE 1: MTCH10X FAMILY TYPES

Device Data Sheet Index Sensor Input Active Guard Digital Output

MTCH101 (A) 1 N 1

MTCH102 (B) 2(1) Y(1) 2

MTCH105 (B) 5(1) Y(1) 5

MTCH108 (B) 8(1) Y(1) 8

Note 1: One of the sensor inputs can be configured as active guard output.

Data Sheet Index: (Unshaded devices are described in this document.)

A: DS-40001664 MTCH101 Single-Channel Proximity Detector

B: Future Release MTCH102/105/108 Dual-Channel Proximity/Touch Controller

Note: For other small form-factor package availability and marking information, please visit

http://www.microchip.com/packaging or contact your local sales office.

TABLE 2: PACKAGES

Packages MSOP TSSOP SSOP UDFN QFN

MTCH102 X X

MTCH105 X X

MTCH108 X X

2, 5 and 8-Channel Proximity/Touch Controller Product Brief

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MTCH102/105/108

DS40001780A-page 2 Advance Information  2015 Microchip Technology Inc.

PIN DIAGRAMS

FIGURE 1: 8-LEAD SOIC, DFN

FIGURE 2: 14-LEAD SOIC

FIGURE 3: 16-LEAD QFN

FIGURE 4: 20-LEAD TSSOP

FIGURE 5: 20-LEAD QFN

VDD

MTI0

MTPM

VSS

MTO0

MTSA

Note: See Ta bl e 3 for the pin allocation table.

MTI1/Guard

MTCH102

MTO1/GC

Note: See Table 4 for the pin allocation table.

MTCH105

VDD

MTI0

MTI1

MTPM

MTI2/ Guard

MTI3

MTI4 MTO4

MTO1

MTO2/GC

MTSA

MTO0

VSS

MTO3

Note: See Ta bl e 4 for the pin allocation table.

MTCH105

MTI3

VSS

MTO0

MTO1

MTSA

MTO2/GC

VDD

MTI0

MTI1

MTPM

MTI2/Guard

MTI4

MTO4

MTO3

Note: See Ta bl e 5 for the pin allocation table.

MTCH108

VDD

MTI0

MTI1

MTPM

MTI2/Guard

MTI3

MTI4

MTI5

MTI6

MTI7

MTO0

MTO1

MTSA

MTO2/GC

MTO3

MTO4

MTO5

MTO6

MTO7

VSS

Note: See Ta bl e 5 for the pin allocation table.

MTCH108

MTO5

MTO6

MTO7

MTI7

MTI6

MTPM

MTI2/Guard

MTI3

MTI4

MTI5

MTI1

MTI0

VDD

VSS

MTO0

MTO1

MTSA

MTO2/GC

MTO3

MTO4

 2015 Microchip Technology Inc. Advance Information DS40001780A-page 3

MTCH102/105/108

PIN ALLOCATION TABLES

TABLE 3: 8-PIN DESCRIPTION (MTCH102)

Name 8-Lead SOIC

and DFN Description

VDD 1 Power Supply Input

MTI0 2 Proximity/Touch Sensor 0 Input

MTI1/Guard 3 Proximity/Touch Sensor 1 Input/Active Guard

MTPM 4 Low-Power Mode Select

MTSA 5 Sensitivity Adjust Input

MTO1/GC 6 MTI1 Detect Output (Active-Low)/Guard Control

MTO0 7 MTI0 Detect Output (Active-Low)

VSS 8 Ground

TABLE 4: 14-,16-PIN DESCRIPTION (MTCH105)

Name 14-Lead

SOIC 16-Lead

QFN Description

VDD 1 16 Power Supply Input

MTI0 2 1 Proximity/Touch Sensor 0 Input

MTI1 3 2 Proximity/Touch Sensor 1 Input

MTPM 4 3 Low-Power Mode Select

MTI2/Guard 5 4 Proximity/Touch Sensor 2 Input/Active Guard

MTI3 6 5 Proximity/Touch Sensor 3 Input

MTI4 7 6 Proximity/Touch Sensor 4 Input

MTO4 8 7 MTI4 Detect Output (Active-Low)

MTO3 9 8 MTI3 Detect Output (Active-Low)

MTO2/GC 10 9 MTI2 Detect Output (Active-Low) /Guard Control

MTSA 11 10 Sensitivity Adjust Input

MTO1 12 11 MTI1 Detect Output (Active-Low)

MTO0 13 12 MTI0 Detect Output (Active-Low)

VSS 14 13 Ground

MTCH102/105/108

DS40001780A-page 4 Advance Information  2015 Microchip Technology Inc.

PIN DESCRIPTION

MTIx

Connect the sensor to this input. An additional resistor

of at least 4.7 kΩ is recommended for high-frequency

noise immunity.

GUARD

The waveform on the Guard pin will shield or guard

MTIx’s sensor from the effect of nearby noise sources

or power planes if the guard trace surrounds MTIx’s

trace and sensor. The Guard pin will be driven in phase

with MTIx to minimize the voltage difference between

the two pins.

MTOx

The MTOx pin is an open-drain output, which reports

the proximity/touch state of MTIx. A pull-up resistor is

required, and it will pull the line low when proximity/

touch is detected, and release the line when proximity/

touch is released.

By grounding the GC pin, the active guard signal will be

enabled on the Guard pin.

MTSA

The voltage will determine the sensitivity. VDD voltage

will give the lowest sensitivity while GND voltage will

give the highest. A linear voltage sensitivity is imple-

mented between VDD and GND. A resistor ladder is

used to adjust the sensitivity.

MTPM

By grounding the MTPM pin, the MTCH102/105/108

will be in Low-Power mode, thus having a slower

response time. When the MTPM pin is at VDD, the

power consumption will be higher with a faster

response time.

TABLE 5: 20-PIN DESCRIPTION (MTCH108)

Name 20-Lead

TSSOP 20-Lead

QFN Description

VDD 1 18 Power Supply Input

MTI0 2 19 Proximity/Touch Sensor 0 Input

MTI1 3 20 Proximity/Touch Sensor 1 Input

MTPM 4 1 Low-Power Mode Select

MTI2/Guard 5 2 Proximity/Touch Sensor 2 Input/Active Guard

MTI3 6 3 Proximity/Touch Sensor 3 Input

MTI4 7 4 Proximity/Touch Sensor 4 Input

MTI5 8 5 Proximity/Touch Sensor 5 Input

MTI6 9 6 Proximity/Touch Sensor 6 Input

MTI7 10 7 Proximity/Touch Sensor 7 Input

MTO7 11 8 MTI7 Detect Output (Active-Low)

MTO6 12 9 MTI6 Detect Output (Active-Low)

MTO5 13 10 MTI5 Detect Output (Active-Low)

MTO4 14 11 MTI4 Detect Output (Active-Low)

MTO3 15 12 MTI3 Detect Output (Active-Low)

MTO2/GC 16 13 MTI2 Detect Output (Active-Low)/Guard Control

MTSA 17 14 Sensitivity Adjust Input

MTO1 18 15 MTI1 Detect Output (Active-Low)

MTO0 19 16 MTI0 Detect Output (Active-Low)

VSS 20 17 Ground

 2015 Microchip Technology Inc. Advance Information DS40001780A-page 5

MTCH102/105/108

TYPICAL CIRCUIT

FIGURE 6: SYSTEM DIAGRAM FOR MTCH10X

Note 1: MTI1/Guard for MTCH102 and MTI2/Guard for MTCH105/108.

2: MTO1/GC for MTCH102 and MTO2/GC for MTCH105/108.

Embedded Controller

…...

VDD

MTO0

MTOx

…...

MTPM

Touch

Sensor

Touch

Sensor

…...

MTI0

MTIx

MTSA

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Active Guard

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YSTEM

DS40001780A-page 6 Advance Information  2015 Microchip Technology Inc.

Information contained in this publication regarding device

applications and the like is provided only for your convenience

and may be superseded by updates. It is your responsibility to

ensure that your application meets with your specifications.

MICROCHIP MAKES NO REPRESENTATIONS OR

WARRANTIES OF ANY KIND WHETHER EXPRESS OR

IMPLIED, WRITTEN OR ORAL, STATUTORY OR

OTHERWISE, RELATED TO THE INFORMATION,

INCLUDING BUT NOT LIMITED TO ITS CONDITION,

QUALITY, PERFORMANCE, MERCHANTABILITY OR

FITNESS FOR PURPOSE. Microchip disclaims all liability

arising from this information and its use. Use of Microchip

devices in life support and/or safety applications is entirely at

the buyer’s risk, and the buyer agrees to defend, indemnify and

hold harmless Microchip from any and all damages, claims,

suits, or expenses resulting from such use. No licenses are

conveyed, implicitly or otherwise, under any Microchip

intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC,

FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer,

LANCheck, MediaLB, MOST, MOST logo, MPLAB,

OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC,

SST, SST Logo, SuperFlash and UNI/O are registered

trademarks of Microchip Technology Incorporated in the

U.S.A. and other countries.

The Embedded Control Solutions Company and mTouch are

registered trademarks of Microchip Technology Incorporated

in the U.S.A.

Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo,

CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit

Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet,

KleerNet logo, MiWi, MPASM, MPF, MPLAB Certified logo,

MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code

Generation, PICDEM, PICDEM.net, PICkit, PICtail,

RightTouch logo, REAL ICE, SQI, Serial Quad I/O, Total

Endurance, TSHARC, USBCheck, VariSense, ViewSpan,

WiperLock, Wireless DNA, and ZENA are trademarks of

Microchip Technology Incorporated in the U.S.A. and other

countries.

SQTP is a service mark of Microchip Technology Incorporated

in the U.S.A.

Silicon Storage Technology is a registered trademark of

Microchip Technology Inc. in other countries.

GestIC is a registered trademarks of Microchip Technology

Germany II GmbH & Co. KG, a subsidiary of Microchip

Technology Inc., in other countries.

All other trademarks mentioned herein are property of their

respective companies.

ISBN: 978-1-63277-013-4

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intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our

knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data

Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not

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Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our

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allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Microchip received ISO/TS-16949:2009 certification for its worldwide

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and India. The Company’s quality system processes and procedures

are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping

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 2015 Microchip Technology Inc. Advance Information DS40001780A-page 7

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Scheda tecnica MTCH102,5,8 Brief di Microchip Technology

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