3 Configuration

Three configuration input pins are provided on the MTCH1030 touch controller, and each pin controls one of the following configuration parameters:
  • Measurement Period
  • Oversampling
  • Sensitivity
Inputs are set by applying a voltage level to the respective configuration pin. The Appendix provides information on how to generate these input voltages.

The MTCH1030 reads the configuration inputs at power-up, and sensor parameters are set accordingly. During the run-time, the CFGx inputs are measured once every two seconds, and configuration changes are applied at subsequent sensor measurements. Each input must be in the range of 0V to VDD. CFG0 and CFG1 are split into four bands providing four options for each parameter, and CFG2 provides a continuous sensitivity adjustment between 0V and VDD. These configurations are not updated if any sensor is in detect or if the MTCH1030 is configured in Single-Button mode. Refer to Section 3.5 - Single-Button Mode for further information.

Table 3-1. 
Input Range Configuration Selection
0V to ¼ VDD A
¼ VDD to ½ VDD B
½ VDD to ¾ VDD C
¾ VDD to VDD D

In addition to CFGx pins, the MTCH1030 provides options to enable or disable the following features:

  • Easy Tune
  • Single-Button mode
  • Touch Tune data