SAME54P20A BSP Introduction

32-bit Arm® Cortex®-M4 core with single-precision FPU and 4 KB combined instruction cache and data cache; frequency up to 120 MHz, MPU, 403 CoreMark® at 120 MHz, and DSP instructions

32-channel Direct Memory Access Controller (DMAC)
Up to two SD/MMC Host Controller (SDHC)
Up to 50 MHz operation
4-bit or 1-bit interface
Compatibility with SD and SDHC memory card specification version 3.01
Compatibility with SDIO specification version 3.0
Compliant with JDEC specification, MMC memory cards V4.51
One Quad I/O Serial Peripheral Interface (QSPI)
Dedicated AHB memory zone
One Ethernet MAC (SAM E53 and SAM E54)– 10/100 Mbps in MII and RMII with dedicated DMA
IEEE® 1588 Precision Time Protocol (PTP) support
IEEE 1588 Time Stamping Unit (TSU) support
IEEE802.3AZ energy efficiency support
Support for 802.1AS and 1588 precision clock synchronization protocol
Wake on LAN support
Up to two Controller Area Network (CAN) (that is., SAM E51 and SAM E54)
Support for CAN 2.0A/CAN 2.0B and CAN-FD (ISO 11898-1:2016)
One Full-Speed (12 Mbps) Universal Serial Bus (USB) 2.0 interface
Embedded host and device function
Eight endpoints
On-chip transceiver with integrated serial resistor

Up to 114 I/O lines with external interrupt capability (edge- or level-sensitivity), debouncing, glitch filtering and On-die Series Resistor Termination
Five Parallel Input/Output Controllers (PIO)
32-channel Event System
Up to eight Serial Communication Interfaces (SERCOM), can be configured as USART/I2C/SPI
Up to eight 16-bit Timers/Counters (TC), can be configured as 8/16/32bit TC.
Two 24-bit Timer/Counters for Control (TCC), with extended functions
Up to Three 16-bit Timer/Counters for Control (TCC) with extended functions.
32-bit Real Time Counter (RTC) with clock/calendar function
Up to 4 wake-up pins with tamper detection and debouncing filter
Watchdog Timer (WDT) with Window mode
CRC-32 generator
One two-channel Inter-IC Sound Interface (I2S)
Position Decoder (PDEC)
Frequency meter (FREQM)
Four Configurable Custom Logic (CCL)
Dual 12-bit, 1 MSPS Analog-to-Digital Converter (ADC) with up to 16 channels each:
Dual 12-bit, 1 MSPS output Digital-to-Analog Converter (DAC)
Two Analog Comparators (AC) with Window Compare function
One temperature sensor
Parallel Capture Controller (PCC)
Peripheral Touch Controller (PTC) - Capacitive Touch buttons, sliders, and wheels

One Advanced Encryption System (AES) with 256-bit key length and up to 2 MB/s data rate
Five confidential modes of operation (ECB, CBC, CFB, OFB, CTR)
Supports counter with CBC-MAC mode
Galois Counter Mode (GCM) - True Random Number Generator (TRNG)
Public Key Cryptography Controller (PUKCC) and associated Classical Public Key Cryptography Library (PUKCL)
RSA, DSA : Elliptic Curves Cryptography (ECC) ECC GF(2n), ECC GF(p)
Integrity Check Module (ICM) based on Secure Hash Algorithm (SHA1, SHA224, SHA256), DMA assisted