This application note describes how to migrate designs from the uPSD3200 series to the uPSD3400 series, including pin definitions, SFRs, and interrupt vectors.
The document details the conversion guide between the uPSD3200 and uPSD3400 microcontroller families. It highlights differences in pin definitions, special function registers (SFRs), and interrupt vectors that may impact firmware migration.
Key changes include the requirement for a separate 3.3V core supply on the 3400 series even when used in 5V systems, an increase in clock speed from 24MHz to 40MHz, and architectural improvements such as a 16-bit internal data path and dual data pointers.
The 3400 Turbo MCU core can be clocked up to a maximum rate of 40MHz.
The 3400 has a total of nine 16-bit timer/counters, including six in the PCA unit and three standard units.
No, the watchdog timer is disabled after reset on 3400 devices.