Datasheet

 2012 Microchip Technology Inc. DS41663A-page 9
MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER
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 Table 4 -3.
The FLIPSTATE register, using Figure 4-2, should be
set to 0b111, or 0x7, for this particular example.
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}
TABLE 4-3: CUSTOM APPLICATION
SCALING COEFFICIENTS
Axis Channels
Scaling
Coefficient
Maximum
Output
RX 4 65535 [0-3071]
TX 11 26214 [0-4095]