Datasheet MTCH6301 Datasheet

MTCH6301 PROJECTED CAPACITIVE

TOUCH CONTROLLER

MTCH6301 Pr ojecte d Capacitive Touch Controller

Description

The MTCH6301 is a turnkey projected capacitive con­troller that allows easy integration of multi-touch and
gestures to create a rich user interface in your design.
Through a sophisticated combination of Self and
Mutual Capacitive scanning for both XY screens and
touch pads, the MTCH6301 allows designers to quickly
and easily integrate projected capacitive touch into
their application.

Applications:

• Human-machine interfaces with configurable
button, keypad or scrolling functions

• Single-finger gesture based interfaces to swipe,
scroll, or doubletap controls

• Home automation control panels

• Security control keypads

• Automotive center stack controls

• Gaming devices

• Remote control touch pads

Touch Sensor Support

• Up to 13RX x 18TX channels

• Works with printed circuit board (PCB), film, glass,
and flexible circuit board (FPC) sensors

• Supports sensor sizes up to 4.3”

• Individual channel tuning for optimal sensitivity

• Cover layer support:

- Plastic: up to 3 mm

- Glass: up to 5 mm

Touch Features

• Multitouch (up to 10 touches)

• Gesture detection and reporting

• Single and dual touch drawing

• Self and Mutual signal acquisition

• Built-in noise detection and filtering

Power Management

• Configurable Sleep mode

• Integrated Power-on Reset and Brown-out Reset

• 20 µA sleep current (typical)

Communication Interface

•I2C™ (up to 400 kbps)

Operating Conditions

• 2.4V to 3.6V, -40ºC to +105ºC

Package Types

• 44-Lead TQFP

• 44-Lead QFN

Touch Performance

• >100 reports per second single touch

• >60 reports per second dual touch

• Up to 12-bit resolution coordinate reporting

 2012 Microchip Technology Inc. DS41663A-page 1

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

Table of Contents

1.0 System Block Diagram................................................................................................................................................................. 3

2.0 Configuration and Setup............................................................................................................................................................... 3

3.0 Pin Diagram.................................................................................................................................................................................. 4

4.0 Layout........................................................................................................................................................................................... 6

5.0 Communication Protocol ............................................................................................................................................................ 10

6.0 Memory Map .............................................................................................................................................................................. 16

7.0 Special Features ........................................................................................................................................................................ 18

8.0 Electrical Characteristics............................................................................................................................................................ 21

9.0 Ordering Information .................................................................................................................................................................. 24

10.0 Packaging Information................................................................................................................................................................ 25

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DS41663A-page 2  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

Touch Sensor

TX0..17

RX0..12

User Configuration Data

Noise Reduction / Filtering Engine

Gesture Engine

MultiTouch

Decode

I2C™

Module

Signal Acquisition Controller

TX Drive

RX

Sense

ADC

MTCH6301

Communications Engine

[Master Controller]

Touch Data

MICROCHIP

PICkit™ Serial

Analyzer

USB

Connection only for initial tuning or configuration

1.0 SYSTEM BLOCK DIAGRAM

The MTCH6301 is a turnkey projected capacitive touch
controller that allows easy integration of multitouch and
gestures to create a rich user interface in your design.
Through a sophisticated combination of Self and
Mutual Capacitive scanning for both XY screens and
touch pads, the MTCH6301 allows designers to quickly
and easily integrate projected capacitive touch into
their application.

FIGURE 1-1: BLOCK DIAGRAM

The Projected Capacitive Configuration Utility with an
autotune feature allows fast customization for different
sizes and top layer thicknesses.

For further customization, designers can also get
access to the firmware library to optimize and improve
designs as needed.

2.0 CONFIGURATION AND SETUP

The MTCH6301 is pre-configured for a 12 Receiver
(RX)/9 Transmitter (TX) touch sensor, mapped as

shown in Section4.0 “Layout”. While the device will

work out of the box using this specific sensor configu­ration, most applications will require additional configu­ration and sensor tuning to determine the correct set of
parameters to be used in the final application.

Microchip provides a PC-based configuration tool for
this purpose, available in the mTouch™ Sensing Solu­tion Design Center (www.microchip.com/mtouch). Use
of this tool requires a PICkit™ Serial Analyzer (updated
with MTCH6301 support), as well as access to the I
communications bus of the MTCH6301.

 2012 Microchip Technology Inc. DS41663A-page 3

2

C

Once the development process is complete, these
modified parameters must either be written perma­nently to the controller (via NVRAM, refer to

Section 7.3 “Non-Volatile RAM (NVRAM)”), or alter-

natively can be sent every time the system is powered
on. Either the PICkit Serial Analyzer or the Master I
Controller can be used for this purpose.

2

C

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

44-Pin TQFP

(1,2)

44-Pin QFN

(1,2)

Note 1: All RX/TX are remappable. Refer to Section 4.3 “Sensor Layout Configuration” for further

information.

2: The metal plane at the bottom of the device is not connected to any pins and is recommended to be

connected to V

SS externally.

MTCH6301

SDA
TX17
TX16
TX15
TX14

VSS

VCAP

INT

N/C
RX12
RX11

SCL

TX11

TX10

TX9

VDD

VSS

TX5

TX6

TX7

TX8

TX4

TX0
TX1
TX2
TX3
VSS
VDD
RX0
RX1
RX2
RX3
RX4

TX13

TX12

RX10

RX9

VSS

VDD

RESET

RX8

RX7

RX6

RX5

MTCH6301

44

43

42

41

40

39

38

37

36

35

34

12

13

141516

17

18

19

20

21

22

1

2
3

4
5

6

7

8

9
10

11

33

32
31

30
29

28

27

26

25
24

23

3.0 PIN DIAGRAM

FIGURE 3-1: PIN DIAGRAM

DS41663A-page 4  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

TABLE 3-1: PINOUT I/O DESCRIPTIONS

Pin Name Pin Number Pin Type Description

RESET 18 I/P Reset device (active low)

SCL 44 I Synchronous serial clock input/output for I2C™

SDA 1 I/O Synchronous serial data input/output for I2C

2

INT 8 O Interrupt (from MTCH6301 to master) for I

RX0 27 I/O

RX1 26 I/O

RX2 25 I/O

RX3 24 I/O

RX4 23 I/O

RX5 22 I/O

RX6 21 I/O

RX7 20 I/O

RX8 19 I/O

RX9 15 I/O

RX10 14 I/O

RX 11 11 I/O

RX12 10 I/O

TX0 33 O

TX1 32 O

TX2 31 O

TX3 30 O

TX4 34 O

TX5 38 O

TX6 37 O

TX7 36 O

TX8 35 O

TX9 41 O

TX10 42 O

TX11 43 O

TX12 13 O

TX13 12 O

TX14 5 O

TX15 4 O

TX16 3 O

TX17 2 O

N/C 9 N/C No Connect

CAP 7 P CPU logic filter capacitor connection

V

VDD 17, 28, 40 P Positive supply for peripheral logic and I/O pins

V

SS 6, 16, 29, 39 P Ground reference for logic and I/O pins. This pin must be

RX Sense (or TX Drive)

TX Drive

connected at all times

C

 2012 Microchip Technology Inc. DS41663A-page 5

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

Master I2C™
Controller

MTCH6301

TX3

TX2

TX1

TX0

VSS

VDD

RX0

RX1
RX2

RX3
RX4

30

31

32

33

29
28
27
26
25
24
23

4

3

2

1

5
6
7
8

9
10
11

TX15

TX16

TX17

SDA

TX14
VSS
VCAP

INT
N/C

RX12
RX11

TX9

TX10

TX11

SCL

VDD

VSS

TX5

TX6

TX7

TX8

TX4

41

42

43

44

40393837363534

RX9

RX10

TX12

TX13

VSS

VDD

RESET

RX8

RX7

RX6

RX5

15

14

13

12

16171819202122

10 µF

20k O

0.1 µF

0.1 µF

0.1 µF

RX0 RX11

TX0 TX8

GPIO/INT

SCL

SDA

MICROCHIP

PICkit™ Serial

Analyzer

4.0 LAYOUT

4.1 Typical Application Circuit

The following schematic portrays a typical application
circuit, based on a 12RX/9TX touch sensor.

FIGURE 4-1: TYPICAL APPLICATION CIRCUIT

4.2 Touch Sensor Design

Please refer to the mTouch Sensing Solution design
center at www.microchip.com/mtouch for additional
information regarding design and layout of touch
sensors.

4.3.1 RX/TX PIN MAP

By default, the RX and TX pins are set as shown in the
Typical Application Circuit (Figure 4.1). If you require a
different layout or a different amount of sensor chan­nels, the RX and TX pins are configured via pin map

arrays. To access these arrays, reference Section 5.0

4.3 Sensor Layout Configuration

To properly configure a sensor from a physical layout
standpoint, the following registers must be correctly
configured:

• RX Pin Map/TX Pin Map

• RX Scaling Coefficient/TX Scaling Coefficient

•Flip State

DS41663A-page 6  2012 Microchip Technology Inc.

“Communication Protocol” and Section 6.0 “Mem­ory Map” of this document.

The RX and TX lines are configurable for the purpose
of making trace routing and board layout more conve­nient. Please note that while RX pins can be used as
TX pins instead, a single pin cannot be used as BOTH
an RX and a TX channel concurrently. The pin maps
are comprised of “Pin Map ID” numbers, which are
shown in Tab le 4 -1 .

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

4.3.3 RX/TX SCALING COEFFICIENTS

TABLE 4-1: PIN MAP ID CHART

Pin

RX0 27 8

RX1 26 7

RX2 25 6

RX3 12 5

RX4 11 4

RX5 10 3

RX6 9 2

RX7 1 1

RX8 0 0

RX9 24 9

RX10 23 10

RX 11 22 11

RX12 21 12

TX0 13

TX1 6

TX2 3 —

TX3 2 —

TX4 4

TX5 7 —

TX6 28 —

TX7 29

TX8 30 —

TX9 14 —

TX10 15

TX11 16 —

TX12 5 —

TX13 8

TX14 34

TX15 33

TX16 32

TX17 31 —

.

Note: Trace routing for sensors requires proper

design technique. Please refer to the
mTouch Sensing Solution design center at

www.microchip.com/mtouch for additional

information on correctly routing touch
sensor traces.

Map ID

(TX)

Map ID

(RX)

—

—

—

—

—

—

—

—

—

Scaling coefficient registers exist in RAM for each axis
(RX/TX) and must be modified in accordance with the
number of channels that are in use. Special attention
must be paid to sensor dimensions that have fewer
than 5 channels, which will have a smaller maximum
touch output value (coordinate).

The relationship between these constant, as well as the
maximum coordinates that will be transmitted are
displayed in Tab le 4 -2 .

TABLE 4-2: RX/TX SCALING

COEFFICIENTS

Number of

Channels

3

4 [0-3071]

5

6 52429

7 43691

8 37449

9 32768

10 29127

11 26214

12 23831

13 21845

14 20165

15 18725

16 17476

17 16384

18 15420

RX/TX

Scaling

Coefficient

65535

Controller

Output Range

[0-2047]

[0-4095]

4.3.4 SENSOR ORIENTATION

The final output orientation is configured via the
FLIPSTATE register. This register can be adjusted dur­ing operation for applications where rotation occurs
during use.

Figure 4-2 shows the initial upright orientation

FLIPSTATE register values for all possible sensor
layouts.

4.3.2 UNUSED RX/TX PINS

Unused RX/TX pins are driven to Vss automatically,
and should be left as no connects.

 2012 Microchip Technology Inc. DS41663A-page 7

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

SENSOR

RX0 RXn

TX0

TXn

SENSOR

RXn RX0

TX0

TXn

SENSOR

RX0 RXn

TXn

TX0

SENSOR

RXn RX0

TXn

TX0

SENSOR

SENSOR

SENSOR

TX0 TXn

SENSOR

TXn TX0

0, 0 4096, 0

4096, 40960, 4096

0, 0 4096, 0

4096, 40960, 4096

0, 0 4096, 0

4096, 40960, 4096

0, 0 4096, 0

4096, 40960, 4096

0, 0 4096, 0

4096, 40960, 4096

0, 0 4096, 0

4096, 40960, 4096

0, 0 4096, 0

4096, 40960, 4096

0, 0 4096, 0

4096, 40960, 4096

RX0

RXn

RX0

RXn

RX0

RXn

RX0

RXn

TX0 TXn

TXn TX0

SWAP
TXFLIP
RXFLIP

0
0
1

SWAP
TXFLIP
RXFLIP

0
0
0

SWAP
TXFLIP
RXFLIP

0
1
1

SWAP
TXFLIP
RXFLIP

0
1
0

SWAP
TXFLIP
RXFLIP

1
0
1

SWAP
TXFLIP
RXFLIP

1
0
0

SWAP
TXFLIP
RXFLIP

1
1
1

SWAP
TXFLIP
RXFLIP

1
1
0

Default Configuration

REGISTER 4-1: FLIPSTATE REGISTER

U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-1

— — — — — SWAP TXFLIP RXFLIP

bit 7 bit 0

Legend:

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown

bit 7-3 Unimplemented: Read as ‘0’
bit 2 SWAP

1 = RX axis horizontal; TX axis vertical
0 = RX axis vertical; TX axis horizontal

bit 1 TXFLIP

1 = Invert the TX axis
0 = Do not invert the TX axis

bit 0 RXFLIP

1 = Invert the RX axis
0 = Do not invert the RX axis

FIGURE 4-2: SENSOR ORIENTATION CHART

DS41663A-page 8  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

Sensor Line

MTCH63001

Pin

Map ID

TX

0TX11 16

1TX17 31

2TX16 32

3TX15 33

4TX14 34

5RX12 21

6RX11 22

7TX13 8

8TX12 5

9RX10 23

10 RX9 24

RX

0RX5 10

1RX6 9

2RX7 1

3RX8 0

MTCH6301

TX3

TX2

TX1

TX0

VSS

VDD

RX0

RX1

RX2

RX3

RX4

TX15

TX16

TX17

SDA

TX14

VSS

VCAP

INT

N/C

RX12

RX11

TX9

TX10

TX11

SCL

VDD

VSS

TX5

TX6

TX7

TX8

TX4

RX9

RX10

TX12

TX13

VSS

VDD

RESET

RX8

RX7

RX6

RX5

RX0 RX3

TX0 TX10

SENSOR

The Pin Map arrays for this particular setup are as
follows (arrays are shown as organized in memory):

RXPinMap: {10,9,1,0}

TXPinMap: {16,31,32,33,34,21,22,8,5,23,24}

4.4 Example Custom Application Layout

An example 4-channel RX/11-channel TX sensor is
shown in Figure 4-3. In addition to using a completely
modified pin layout, this example differs from the
default configuration by also having the TX axis along
the bottom (X) and RX axis along the side (Y). Note that
some RX pins are used as TX lines in this example.

FIGURE 4-3: NON-STANDARD LAYOUT EXAMPLE

Using the scaling coefficient table generates the values
displayed in Tab le 4 -3 .

TABLE 4-3: CUSTOM APPLICATION

Axis Channels

RX 4 65535 [0-3071]

TX 11 26214 [0-4095]

The FLIPSTATE register, using Figure 4-2, should be
set to 0b111, or 0x7, for this particular example.

 2012 Microchip Technology Inc. DS41663A-page 9

Scaling

Coefficient

SCALING COEFFICIENTS

Maximum

Output

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

5.0 COMMUNICATION PROTOCOL

5.1 Overview

The MTCH6301 has two basic communication types:
Touch & Gesture Protocol, and Command Protocol.

Touch & Gesture Protocol

Fully processed touch coordinates and gestures will be
transmitted immediately as they are processed by the
MTCH6301. Since it is a slave device, the INT pin will
be asserted whenever one of these packets is ready for
transmission. This requires the master controller to ini­tiate a READ command to receive the touch or gesture
packet.

Command Protocol

2

All other commands are invoked by the I
controller. Commands are used for configuring and
controlling the device.

Master Read Details

Please note that any read from the controller by the
master, including both touch & gesture protocol and
command protocol, will be prefixed by a single byte.
This single byte denotes the number of bytes that are
to be transferred. This byte is NOT represented in the
tables and figures for the protocol, but is detailed in

Figure 5-6 and Figure 5-7.

C master

5.2 Touch Protocol

The packet in Tab le 5 -1 is transmitted for each touch
that is present on the sensor.

TABLE 5-1: TOUCH PROTOCOL

Packet Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 1 TOUCHID<3:0> TCH(0) 0 PEN

10 X<6:0>

2000 X<11:7>

30 Y<6:0>

4000 Y<11:7>

Legend: TOUCHID:

PEN:

X:
Y:
TCH:

Touch ID (0-9)
Pen State
0 = Pen Up
1 = Pen Down
X Coordinate of Touch
Y Coordinate of Touch
Always 0, denotes a touch packet

5.3 Gesture Protocol

The packet in Ta bl e 5- 2 is transmitted whenever a ges­ture is performed on the sensor. This feature can be
enabled via the Gesture Protocol register (Table 5-2).
Gestures are NOT enabled by default.

Note: For any “hold” gestures, packets are sent

continuously until the gesture (touch) is
released.

DS41663A-page 10  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

0x81 0x7D 0x05 0x6A 0x01 0x88 0x56 0x02 0x72 0x0F 0x84 0x61

Touch ID0, Pen Down

X: 765, Y: 234

Touch ID1, Pen Up

X: 342, Y: 2034

Gesture for Touch ID0:

Swipe Left

……

TABLE 5-2: GESTURE PROTOCOL

Packet Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 1 TOUCHID<3:0> GEST(1) 0 0

1 0 GESTURE<6:0>

Legend: TOUCHID:

GESTURE:

GEST:

5.4 Example Touch Data

Figure 5-1 depicts multitouch transmission in one touch

activation that is already in progress (ID0), and a sec­ond activation (ID1) being removed from the sensor.

The first activation also completes a gesture. The I
prefix bytes are not shown in this example.

Touch ID (0-7)
Gesture ID
0x10 Single Tap
0x11 Single Tap (hold)
0x20 Double Tap
0x31 Up Swipe
0x32 Up Swipe (hold)
0x41 Right Swipe
0x42 Right Swipe (hold)
0x51 Down Swipe
0x52 Down Swipe (hold)
0x61 Left Swipe
0x62 Left Swipe (hold)
Always 1, denotes a gesture packet

2

C

FIGURE 5-1: EXAMPLE TOUCH DATA

 2012 Microchip Technology Inc. DS41663A-page 11

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

size: Number of remaining bytes in packet
cmd: Command invoked for being responded to
result: Controller command-specific result

0x00 = Success
0x80 = Parameter out of range
0xFE = Timeout (not enough bytes received)
0xFF = Unrecognized command
0xFD = Invalid parameter
0xFC = Missing or extra parameter

data: Data associated with command

0x55 [size] [cmd] Data 0 ... Data n

0x55 [size] [res] Data 0 ... Data n[cmd]

Command (from Master):

Response (from MTCH6301):

5.5 Command Protocol

Figure 5-2 depicts bidirectional communication

protocol (for reading/writing configuration data).

FIGURE 5-2: COMMAND PROTOCOL

5.6 Full Command Set

A complete listing of MTCH6301 commands is shown
in Ta bl e 5- 3. Any commands which contain data bytes,
either sent or received, are shown alongside an
example stream of data in the following sections.

TABLE 5-3: COMMAND SET

ID Name Description

0x00 Enable Touch Enable touch functionality

0x01 Disable Touch Disable touch functionality

0x14 Scan Baseline Instruct controller to scan for a new sensor baseline

0x15 Write Register Write data to a specific register

0x16 Read Register Read data from a specific register

0x17 Write NVRAM Write all current register values to NVRAM

0x18 Software Sleep Instructs the controller to enter sleep mode

0x19 Erase NVRAM Erase the contents of the non-volatile RAM section.

0x1A Manufacturing Test Perform manufacturing tests on all sensor I/O channels

5.6.1 WRITE REGISTER/READ REGISTER

Writes or reads a single register. Note that all registers
are volatile, and any modified data will be lost on power
down. Registers must be saved to NVRAM to store the
configuration permanently

DS41663A-page 12  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

0x55 0x04 0x15 [D0] [D1] [D2] 0x55 0x02 0x00 0x15

Master Command Controller Response

D0 = Index Location
D1 = Offset Location
D2 = Value to Write to Specified Register

0x55 0x03 0x16 [D0] [D1] 0x55 0x03 0x00 0x16 [D2]

Master Command Controller Response

D0 = Index Location
D1 = Offset Location
D2 = Read Value at Specified Register

0x55 0x01 0x1A 0x55 0x03 0x00 0x1A [D0]

Master Command

Controller Response

D0 = Result; 0 = success, 1 = I/O error

FIGURE 5-3: WRITE REGISTER COMMAND

FIGURE 5-4: READ REGISTER COMMAND

5.6.2 MANUFACTURING TEST

The manufacturing test ensures electrical functionality
of the sensor. This test performs the following checks
on all mapped sensor pins: short to VDD, Short to GND,
and pin-to-pin short.

If an I/O error is reported, bits for the pins in question
will be set in the “TX Short Status” and “RX Short Sta­tus” registers.

Please note that:

1. The RX7/RX8 pins will always report an error.

2. If the sensor has more than 16 TX channels,
then channels 17 and 18 will never report an
error.

FIGURE 5-5: MANUFACTURING TEST

 2012 Microchip Technology Inc. DS41663A-page 13

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

SDA

SCL

StartA6A5A4A3A2A1A0R/WACK D7 D6 D5 D4 D3 D2 D1 D0 ACK Stop

Address & R/W Byte Data Byte(s)

1 = Read

0 = Write

1 = Acknowledge
0 = Not Acknowledged

5.7 I2C Specification

The MTCH6301 device supports the I2C serial proto-

stretching, and this should be taken into account by the
master controller. The maximum speed at which the
MTCH6301 can operate is 400 kbps.

col, with the addition of an interrupt pin for notifying the
master that data is ready. The device operates in Slave
mode, meaning that the device does not generate the
serial clock.

5.7.1 SERIAL DATA (SDA)

5.7.3 INTERRUPT (INT)

This pin is utilized by the MTCH6301 to signal that data
is available, and that the master controller should
invoke a MASTER READ. INT is an active high pin, and
is held low during all other activities.

The Serial Data (SDA) signal is the data signal of the
device. The value on this pin is latched on the rising

Note: If the device is not read within 25 ms of

edge of the SCL signal when the signal is an input. With
the exception of the START (RESTART) and STOP
conditions, the high or low state of the SDA pin can only
change when the clock signal on the SCL pin is low.
During the high period of the clock, the SDA pin’s value
(high or low) must be stable. Changes in the SDA pin’s
value while the SCL pin is HIGH will be interpreted as
a START or a STOP condition.

5.7.2 SERIAL CLOCK (SCL)

The Serial Clock (SCL) signal is the clock signal of the

5.7.4 DEVICE ADDRESSING

The MTCH6301 7-bit base address is set to 0x25, and
is not configurable by the user. Every transmission
must be prefixed with this address, as well as a bit sig­nifying whether the transmission is a MASTER WRITE
(‘0’) or MASTER READ (‘1’). After appending this
read/write bit to the base address, this first byte

becomes either 0x4A (WRITE) or 0x4B (READ).
device. The rising edge of the SCL signal latches the
value on the SDA pin. The MTCH6301 employs clock

FIGURE 5-6: SINGLE TRANSMISSION I2C™ FORMAT

asserting the INT pin, it will time out and
data will no longer be available.

5.7.5 TYPICAL I

2

C™ COMMAND READ

AND WRITE

Figure 5-7 depicts the master controller reading from

RAM location 0x01 (number of RX channels), and the
device responding accordingly with 0x0C (Figure 5-6).

DS41663A-page 14  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

SDA

SCL

Start Stop

INT

DATA

554A 03 16 00 01

SDA

SCL

Start Stop

INT

DATA

054B 55 03 00 0C16

Master Write

Master Read

(Controller Response)

SDA

SCL

Start Stop

INT

DATA

054B 81 14 0F 1420

FIGURE 5-7: I2C™ COMMAND READ AND WRITE

5.7.6 TYPICAL I

Figure 5-8 depicts a single touch packet being

streamed from the controller. In this case, touch ID 0 at
location (1940,2592).

2

C TOUCH PACKET READ

FIGURE 5-8: I2C™ TOUCH PACKET READ

2

5.7.7 WAKE ON I

The MTCH6301 is capable of waking up upon receiving

2

C command from the host. Note that since

an I
wake-up time can take up to 350 µs, the controller must
resend any I2C bytes that were not acknowledged
(ACK) before continuing the transmission.

Since the controller will wake up upon a correct I
address match, it does not matter which command is
sent. For simplicity, the Enable Touch command is
recommended.

C

2

C

 2012 Microchip Technology Inc. DS41663A-page 15

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

6.0 MEMORY MAP

TABLE 6-1: MTCH6301 MEMORY MAP

Index

Byte

General 0x00

Sensor

Map

Self 0x10

Mutual 0x20

Decoding 0x30

Note 1: RX Pin Map: {0x08 0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00 0x09 0x0A 0x0B 0x00}

0x01 0x00-0x0C RX Pin map 13 RX Pin Map Array 0-12 Note 1
0x02 0x00-0x12 TX Pin map 18 TX Pin Map Array 0-34 Note 1

TX Pin Map: {0x0D 0x06 0x03 0x02 0x04 0x07 0x1C 0x1D 0x1E 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
Pin map array order reflects the physical sensor pin order, not the MTCH6301 pin sequence.

Offset

Byte

0x01 RX Channels 1 Number of RX Sensor Channels 3-13 12

0x02 TX Channels 1 Number of TX Sensor Channels 3-18 9

0x04 RX Scaling [7:0] 2 RX Scaling Coefficient 15420-65535 23831

0x05 RX Scaling [15:8]

0x06 TX Scaling [7:0] 2 TX Scaling Coefficient 15420-65535 32768

0x07 TX Scaling [15:8]

0x00 Self Scan Time 1 Number of self readings to sum per

0x01 Self Threshold 1 Threshold for detecting a touch 10-150 50

0x00 Mutual Scan Time 1 Number of mutual readings to sum per

0x01 Mutual Threshold 1 Threshold for detecting a touch 10-150 55

0x00 FlipState 1 Determines orientation of sensor with

0x01 Number of

0x04 Minimum Touch

0x05 Pen Down Timer 1 Number of successive sensor scans

0x06 Pen Up Timer 1 Number of successive sensor scans

0x07 Touch

Register Name

Averages

Distance

Suppression Value

Size

Bytes

electrode

node

respect to coordinate output

1 Smoothing Filter (number of previous

coordinates to be averaged with
current touch position)

1 Minimum distance allowed between

touch locations – used for suppressing
weak touches

needed to identify a touch prior to
transmitting data

needed to identify released touch prior
to transmitting data

1 The maximum number of activations

reported. 10 activations are tracked,
but may not be reported. 0 = disable
suppression feature

Description Data Range

Default

Value

1-30 5

1-30 9

0b000-0b111 0b001

1-16 8

0-255 150

0-10 3

0-10 3

0-10 0

DS41663A-page 16  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

TABLE 6-1: MTCH6301 MEMORY MAP

Index

Byte

Gestures 0x50

Configure 0xF0

I/O Status 0xF1

Note 1: RX Pin Map: {0x08 0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00 0x09 0x0A 0x0B 0x00}

TX Pin Map: {0x0D 0x06 0x03 0x02 0x04 0x07 0x1C 0x1D 0x1E 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
Pin map array order reflects the physical sensor pin order, not the MTCH6301 pin sequence.

Offset

Byte

0x00 RX Swipe Length 1 Minimum interpolated X-distance for

0x01 TX Swipe Length 1 Minimum interpolated Y-distance for

0x02 Swipe Boundary 1 Maximum interpolated distance in

0x03 Swipe Hold

0x04 Swipe Time [7:0] 2 Maximum time (ms) for ‘swipe’ gesture

0x05 Swipe Time [15:8]

0x06 Tap Time [7:0] 2 Maximum time (ms) for ‘tap’ gesture,

0x07 Tap Time [15:8]

0x08 Tap Threshold 1 Maximum interpolated distance devia-

0x09 Minimum Swipe

0x0A Double Tap Time

0x0B Double Tap Time

0x0C Gesture Edge

0x00 SLP2 [7:0] 4 Time-out duration (ms) with no

0x01 SLP2 [15:8]

0x02 SLP2 [23:16]

0x03 SLP2 [31:24]

0x05 SLP1 1 Interval to poll for touch while in Sleep

0x07 Touch Packet CFG 1 Touch Packet Configuration 0x81 = Enabled

0x09 Gesture Packet

0x0A Status Packet CFG 1 Status Packet Configuration 0x81 = Enabled

0x02 TX Short

0x03 TX Short

0x06 RX Short

0x07 RX Short

Register Name

Threshold

Velocit y

[7:0]

[15:8]

Keepout

CFG

Status [7:0]

Status [15:8]

Status [7:0]

Status [15:8]

Size

Bytes

‘swipe’ gesture

‘swipe’ gesture

opposing direction to cancel ‘swipe’
gesture

1 Maximum interpolated distance devia-

tion allowed to determine ‘held’ swipe
gesture

to be completed, beginning at initial
touch-down

beginning at initial touch-down

tion allowed to determine ‘tap’ gesture

1 Minimum velocity to register the ‘swipe’

gesture. Events below this threshold
will cancel the gesture (touch
removed) or be re-evaluated for
‘swipe-and-hold’ (touch is held)

2 Maximum time allowed between two

taps to determine ‘double tap’ gesture

1 Determines the width of ‘keepout

barrier’ (inactive edge) of the perimeter
of the sensor to reduce or eliminate
issues due to edge effects

activations before controller enters
Sleep mode

mode

1 Gesture Packet Configuration 0x81 = Enabled

2 Identifies which TX pins are shorted

after executing Manufacturing Test
command – Read Only

2 Identifies which RX pins are shorted

after executing Manufacturing Test
command – Read Only

Description Data Range

10-255 160

10-255 150

0-255 150

0-255 70

0-65535 200

0-65535 500

1-255 120

1-50 3

50-1000 350

0-255 128

0-

4,000,000,000

0-11 7

0x01 = Disabled

0x01 = Disabled

0x01 = Disabled

0x00-0xFF 0x00

0x00-0xFF 0x00

Default

Value

8000

0x81

0x01

0x01

 2012 Microchip Technology Inc. DS41663A-page 17

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

7.0 SPECIAL FEATURES

7.1 Gestures

Single finger gestures are a fast and intuitive way to
navigate a feature rich human-machine interface. The
MTCH6301 supports 11 single finger gestures natively,
without requiring interaction from the master processor.

Tuning may be required depending on the layout of the
sensor, the time duration, and length of activation
required for your gesture supported application. The
most common defaults are already preloaded and

FIGURE 7-1: GESTURE TYPES

should serve most applications. These parameters and

their descriptions are available in the “Gestures” sec-

tion of the memory map (Section 6.0 “Memory Map”).

Note: Gestures are NOT enabled by default,

and must be enabled via the gesture
packet configuration byte in RAM (refer to

Section 6.0 “Memory Map”).

If your application requires ONLY gesture functionality,

and does not require touch coordinates, the touch

packet configuration byte (refer to Section 6.0 “Mem-

ory Map”) can be used to turn off all touch coordinate

data.

7.2 Sleep

Sleep functionality is enabled by default, and follows
the behavior detailed in Figure 7-2. This functionality
can be modified via the registers related to sleep.

SLP1: This delay controls how often the sensor is
scanned for a touch while in Sleep mode. Table 7-1
correlates the value of SLP1 to time (ms).

TABLE 7-1: SLP1 DELAY CHART

SLP1 Delay (ms) SLP1 Delay (ms)

01664

127

248256

389512

416101024

532112048

Note 1: Default setting.

SLP2: Time (ms) without touch activity before controller
enters sleep mode.

DS41663A-page 18  2012 Microchip Technology Inc.

(1)

128

(1)

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

No touch for

[SLP2] msec?

[Normal Full Decode

of Sensor]

Transmit

Touch

Sleep for

[SLP1] msec

Wake up;

Touch exists?

Yes

No

Yes

Touch?

No

No

Yes

FIGURE 7-2: SLEEP FUNCTIONALITY

7.3 Non-Volatile RAM (NVRAM)

Permanent storage of parameters that have been mod­ified can be achieved using the internal NVRAM. This
NVRAM is not meant for continuous writing, as it has a
low write cycle limit of 20,000.

Upon startup, the NVRAM’s data (if present) is loaded
into the controller. If no data is available in the NVRAM,
the device defaults are loaded instead.

Please note that parameters cannot be written individ­ually to the NVRAM. All registers will be written with
one command. See the applicable command within the

command set for more details. (Section 5.6 “Full

Command Set”)

 2012 Microchip Technology Inc. DS41663A-page 19

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

0

100

200

300

400

2x2 4x4 6x6 8x8 12x9 13x15

Reports Per Second

Sensor Channel Matrix

7.4 Touch Performance

Using default acquisition parameters, Figure 7-3
shows the relationship of single touch report rate with
regard to sensor size.

Larger sensors will have a reduced report rate, due to
the additional time needed to scan the sensor.

FIGURE 7-3: SINGLE-TOUCH REPORT RATE VS SENSOR SIZE

DS41663A-page 20  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

8.0 ELECTRICAL CHARACTERISTICS

This section provides an overview of the MTCH6301
electrical characteristics.

Ambient temperature under bias …………………………………………………..................….....……..............-40 to +85°C

Storage temperature……………………………………………………………….......................…...…….………-65 to 150°C

Voltage on V

Voltage on all other pins with respect to V

Maximum current out of V

Maximum current into V

Maximum output current sunk by any I/O pin…………………………………………………..................………………15 mA

Maximum output current sourced by any I/O pin …………………………………………………...................…………15 mA

Maximum current sunk by all ports. …………………………………………………………………….............………. 200 mA

Maximum current sourced by all ports. ………………………………………………………………………................ 200 mA

Stresses ab ove tho se listed under “Abs olute M aximu m Rat ings” m ay cau se permane nt dama ge to the device . This is a
stress rating only and functional operation of the device at those or any other conditions, above those indicated in the
operation listing s of this s pec ifi ca tio n, is no t im pl ied. Exposure to maxi mu m ra tin g c onditions for extended p eriods may
affect device reliability.

DD with respect to VSS……………………………....…………………….............................………-0.3V to 4.0V

SS………………………………………..…...............………-0.3V to (VDD + 0.3V)

SS pin …..……………………………………………………..........……………...............…300 mA

DD pin(s) ……….………………………………………………………..........…………………300 mA

8.1 Absolute Maximum Ratings

Absolute maximum ratings for the MTCH6301 device
are listed below. Exposure to these maximum rating
conditions for extended periods may affect device reli­ability. Functional operation of the device at these or
any other conditions, above the parameters indicated
in the operation listings of this specification, is not
implied.

8.2 DC Characteristics

TABLE 8-1: THERMAL OPERATING CONDITIONS

Rating Symbol Min. Typ. Max. Units

Operating Junction Temperature Range TJ -40 — +125 ⁰C
Operating Ambient Temperature Range TA -40 — +85 ⁰C

Power Dissipation:
Internal Chip Power Dissipation:
PINT = VDD x (IDD-Ʃ IOH)
I/O Pin Power Dissipation:
PI/O = Ʃ (({VDD - VOH} x IOH) + Ʃ (VOL x IOL))

Maximum Allows Power Dissipation PDMAX (TJ - TA) / θJA W

TABLE 8-2: THERMAL PACKAGING CHARACTERISTICS

Characteristics Symbol Typ. Max. Units

Package Thermal Resistance, 44-pin QFN θJA 32 — ⁰C/W

Package Thermal Resistance, 44-pin TQFP θJA 45 — ⁰C/W

TABLE 8-3: OPERATING VOLTAGE AND CURRENT

Symbol Characteristics Min Typ Max Units

DD Supply Voltage 2.4 — 3.6 V

V

DD Operating Current — 20 30 mA

I

SLP Sleep Current — 20 — µA

I

PD PINT + PI/O W

 2012 Microchip Technology Inc. DS41663A-page 21

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

TABLE 8-4: PIN INPUT AND OUTPUT SPECIFICATIONS

Symbol Characteristic / Pins Min. Max. Units Conditions

V

IL Input Low Voltage

RX, TX VSS 0.15 VDD V—

SDA, SCL V

VIH Input High Voltage

RX, TX 0.65 VDD VDD V Note 1

SDA, SCL 0.65 VDD V

VOL Output Low Voltage

INT, RX, TX VSS 0.4 V IOL < 10 mA, VDD = 3.3V

SDA, SCL V

VOH Output High Voltage

INT, RX, TX 2.4 VDD V IOH < 10mA, VDD = 3.3V

SDA, SCL — — V Note 2

BOR Brown-out event on VDD

V

Transition high-to-low

Note 1: Parameter is characterized, but not tested.

2: Open drain structure.

SS 0.3 VDD V Note 1

DD V Note 1

SS 0.4 V IOL < 10 mA, VDD = 3.3V

2.0 2.3 V Min. not tested

(1,2)

8.3 AC Characteristics and Timing Parameters

TABLE 8-5: AC CHARACTERISTICS AND TIMING PARAMETERS

Symbol Characteristic Min. Typ. Max Units Conditions

TPU Power-up Period — 400 — µs Notes 1, 2

TBOR Brown-out Pulse Width (Low) — 1 — µs Note 1

Note 1: Parameter is characterized, but not tested.

2: Power-up period is for core operation to begin, and does not reflect response time to a touch.

FIGURE 8-1: I2C™ BUS START/STOP BIT TIMING CHARACTERISTICS

DS41663A-page 22  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

FIGURE 8-2: I2C™ BUS DATA TIMING CHARACTERISTICS

TABLE 8-6: I2C™ BUS DATA TIMING REQUIREMENTS

Parameter

Number

IS1 TLO:SCL Clock Low Time 100 kHz Mode 4.7 — µs —

IS2 THI:SCL Clock High Time 100 kHz Mode 4.0 — µs —

IS3 TF:SCL SDA and SCL

IS4 TR:SCL SDA and SCL

IS5 TSU:DAT Data Input Setup

IS6 THD:DAT Data Input Hold

IS7 THD:STA Start Condition

IS8 THD:STA Start Condition

IS9 TSU:STO Stop Condition

IS10 THD:STO Stop Condition

IS11 TAA:SCL Output Valid

IS12 TDF:SDA Bus Free Time 100 kHz Mode 4.7 — µs Time bus must be free

Symbol Characteristic Min. Max. Units Conditions

400 kHz Mode 1.3 — µs

400 kHz Mode .6 — µs

100 kHz Mode — 300 ns —

Fall Time

Rise Time

Time

Time

Setup Time

Hold Time

Setup Time

Hold Time

from Clock

CB SCL, SDC Capacitive Loading — 400 pF Parameter is characterized,

400 kHz Mode 20+0.1 CB 300 ns

100 kHz Mode — 1000 ns —

400 kHz Mode 20+0.1 CB 300 ns

100 kHz Mode 250 — ns —

400 kHz Mode 100 — ns

100 kHz Mode 0 — ns —

400 kHz Mode 0 0.9 µs

100 kHz Mode 4700 — ns Only relevant for repeated

400 kHz Mode 600 — ns

100 kHz Mode 4000 — ns After this period, the first

400 kHz Mode 600 — ns

100 kHz Mode 4000 — ns —

400 kHz Mode 600 — ns

100 kHz Mode 4000 — ns —

400 kHz Mode 600 — ns

100 kHz Mode 0 3500 ns —

400 kHz Mode 0 1000 ns

400 kHz Mode 1.3 — µs

start condition

clock pulse is generated

before new transmission can
start

but not tested

 2012 Microchip Technology Inc. DS41663A-page 23

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

9.0 ORDERING INFORMATION

TABLE 9-1: ORDERING INFORMATION

Part Number Pin Package Packing

MTCH6301-I/PT 44 TQFP 10x10x1mm Tray

MTCH6301-I/ML 44 QFN 8x8x0.9mm Tube

MTCH6301T-I/PT 44 TQFP 10x10x1mm T/R

MTCH6301T-I/ML 44 QFN 8x8x0.9mm T/R

DS41663A-page 24  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

Legend: XX...X Customer-specific information

Y Year code (last digit of calendar year)
YY Year code (last 2 digits of calendar year)
WW Week code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)

* This package is Pb-free. The Pb-free JEDEC designator ( )

can be found on the outer packaging for this package.

Note: In the event the full Microchip part number cannot be marked on one line, it will

be carried over to the next line, thus limiting the number of available
characters for customer-specific information.

3

e

44-Lead QFN (8x8x0.9 mm) Example

XXXXXXXXXXX
XXXXXXXXXXX

YYWWNNN

XXXXXXXXXXX

PIN 1 PIN 1

44-Lead TQFP (10x10x1 mm)

Example

XXXXXXXXXX

YYWWNNN

XXXXXXXXXX

XXXXXXXXXX

MTCH6301

-I/PT
1130235

3

e

MTCH6301

-I/PT
1130235

10.0 PACKAGING INFORMATION

3

e

 2012 Microchip Technology Inc. DS41663A-page 25

3

e

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

DS41663A-page 26  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

 2012 Microchip Technology Inc. DS41663A-page 27

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

DS41663A-page 28  2012 Microchip Technology Inc.

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

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 2012 Microchip Technology Inc. DS41663A-page 29

MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

DS41663A-page 30  2012 Microchip Technology Inc.

Note the following details of the code protection feature on Microchip devices:

YSTEM

CERTIFIED BY DNV

== ISO/TS 16949 ==

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
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
mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

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
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INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
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suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
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The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, K
PICSTART, PIC
and UNI/O are registered trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MTP, SEEVAL and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.

Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.

Analog-for-the-Digital Age, Application Maestro, BodyCom,
chipKIT, chipKIT logo, CodeGuard, dsPICDEM,
dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O,
Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA
and Z-Scale 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.

GestIC and ULPP are 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.

© 2012, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.

Printed on recycled paper.

ISBN: 978-1-62076-653-8

EELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,

32

logo, rfPIC, SST, SST Logo, SuperFlash

QUALITY MANAGEMENT S

 2012 Microchip Technology Inc. DS41663A-page 31

Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.

®

MCUs and dsPIC® DSCs, KEELOQ

®

code hopping

Worldwide Sales and Service

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11/29/11

DS41663A-page 32  2012 Microchip Technology Inc.