SAMD21RT mcu equivalent, 32-bit cortex-m0+ mcu.
In-system programmable Flash, 12-channel Direct Memory Access Controller (DMAC), 12-channel Event System, programmable Interrupt Controller, 52 programmable I/O pins, 32.
The series provide one full-speed USB 2.0 embedded host and device interface; six Serial Communication Modules (SERCOM).
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7. I/O Multiplexing and Considerations..............................................................
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