1.1 Relevant Devices

The AVR® DA family of microcontrollers are using AVR CPU with hardware multiplier, running at up to 24 MHz, with 32/64/128 KB of Flash sizes, 4/8/16 KB of SRAM, and 512B of EEPROM in 28-, 32-, 48- or 64-pin packages. The family uses the latest technologies from Microchip with a flexible and low-power architecture including Event System and Sleepwalking, accurate analog features, and advanced digital peripherals.
Figure 1-1. Overview of AVR® DA Family Microcontrollers

Figure 1-1 shows the AVR DA family microcontrollers with different pin counts and flash memory sizes. The parts with different flash memory sizes typically also have different RAM and EEPROM.

  • Vertical migration is possible without code modification, as these devices are fully pin and feature compatible.
  • Horizontal migration to the left reduces the pin count and therefore, the available features.

From the available microcontrollers of AVR DA family, the 48-pin and 64-pin devices are relevant for this application note, as these devices are equipped with two and three instances of ZCD peripheral respectively.

Note: The 48-pin and 64-pin devices of AVR DB family are also relevant for this application note, as these devices are equipped with two and three instances of ZCD peripheral respectively.