The microprocessor is convenient for international shipping since it is packaged in TQFP. Datasheets for 44 pin functions can be found here. It is possible to use the micro processor from 5V.
QT60326-ASG-SL739 Features
QT60326-ASG-SL739 Applications
There are a lot of Microchip Technology QT60326-ASG-SL739 Microprocessor applications.