As William Wong of Electronic Design notes, the SAM D20 specifically targets the entire low-end space currently handled by 8- and 16-bit microcontrollers, while also hitting the low-end 32-bit space.
“The SAM D20 incorporates high-end support like the high-speed bus matrix linked to three AHB/APB bridges. System and power controllers can be found off one bridge. Memory controllers are found off another,” Wong wrote in an article posted on Electronic Design.
“The third bridge handles the convention interfaces that include up to six programmable serial ports, eight timers, a 20-channel, 350-ksample/s analog-to-digital converter (ADC), a pair of comparators, and a 10-bit, 350-ksample/s digital-to-analog converter (DAC). There is also Atmel’s touch interface controller.”
In addition, Wong described Atmel’s advanced Event System which allows peripheral events to trigger actions – without processor intervention (the core can actually be sleeping), while pointing out that the SAM D20 family supports up to 32 kbytes for RAM and 256 kbytes of flash memory.
“Atmel is already known for its microcontroller families, including the 8-bit AVR,” Wong continued. “The SAM D20 will follow in the pin steps of these chips with 32-, 48-, and 64-pin versions that match the SAM4L family.”