MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER

DS41663A-page 16

 2012 Microchip Technology Inc.

6.0

MEMORY MAP

TABLE 6-1:

MTCH6301 MEMORY MAP

Index

Byte

Offset

Byte

Register Name

Size

Bytes

Description

Data Range

Default

Value

General

0x00

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]

Sensor

Map

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

Self

0x10

0x00

Self Scan Time

1

Number of self readings to sum per

electrode

1-30

5

0x01

Self Threshold

1

Threshold for detecting a touch

10-150

50

Mutual

0x20

0x00

Mutual Scan Time

1

Number of mutual readings to sum per

node

1-30

9

0x01

Mutual Threshold

1

Threshold for detecting a touch

10-150

55

Decoding

0x30

0x00

FlipState

1

Determines orientation of sensor with

respect to coordinate output

0b000-0b111

0b001

0x01

Number of

Averages

1

Smoothing Filter (number of previous

coordinates to be averaged with

current touch position)

1-16

8

0x04

Minimum Touch

Distance

1

Minimum distance allowed between

touch locations – used for suppressing

weak touches

0-255

150

0x05

Pen Down Timer

1

Number of successive sensor scans

needed to identify a touch prior to

transmitting data

0-10

3

0x06

Pen Up Timer

1

Number of successive sensor scans

needed to identify released touch prior

to transmitting data

0-10

3

0x07

Touch

Suppression Value

1

The maximum number of activations

reported. 10 activations are tracked,

but may not be reported. 0 = disable

suppression feature

0-10

0

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.