7.1 Confirmation Scan

Additional scans are performed to confirm a finger touch or finger removal. To avoid false touch triggers, the MTCH1030 touch controller performs further scans to verify whether a finger is touching the sensor or if touch is released. These confirmation scans are done back-to-back to improve response time. Only sensors that need confirmation scans are measured back-to-back. If the user touches only one sensor, then confirmation scans are done only to that sensor. If the user touches two sensors simultaneously, the confirmation scans are done for two sensors.

Figures 7-2 and 7-3 show how to perform confirmation scans for single and multiple channels, respectively.