| AC | Analog Comparator |
| ADC | Analog-to-Digital Converter |
| AES | Advanced Encryption Standard |
| AHB | Advanced High-performance Bus |
| BOD | Brown-Out Detect |
| BSS | Basic Service Set |
| BQTF | Bluetooth Qualification Test Facility |
| CBC | Cipher Block Chaining |
| CBC-MAC | Cipher Block Chaining Message Authentication Code |
| CCL | Configurable Custom Logic |
| CFB | Cipher Feedback |
| CRC | Cyclic Redundancy Check |
| CTR | Counter |
| DMT | Deadman Timer |
| DMAC | Direct Memory Access Controller |
| DSA | Digital Signature |
| ECB | Electronic Code Book |
| ECC | Error Correction Code |
| ECC | Elliptic Curves Cryptography |
| ECC GF | Elliptic Curve Cryptography Galois Field |
| EIC | External Interrupt Controller |
| ETB | Embedded Trace Buffer |
| ETM | Embedded Trace Module |
| FREQM | Frequency Meter |
| GCM | Galois Counter Mode |
| xIP | Execute-In-Place |
| FPU | Floating Point Unit |
| ICM | Integrity Check Module |
| I/O | Input/Output |
| IoT | Internet of Things |
| I2C | Inter-Integrated Circuit |
| LNA | Low Noise Amplifier |
| MAC | Medium Access Control |
| MCU | Microcontroller Unit |
| MPU | Memory Protection Unit |
| NVIC | Nested Vector Interrupt Controller |
| OFB | Output Feedback |
| OTA | Over-The-Air |
| PA | Power Amplifier |
| PLL | Phase-Locked Loop |
| POR | Power-On Reset |
| PPS | Peripheral Pin Select |
| PSDU | Physical Layer Service Data Unit |
| PTA | Packet Traffic Arbitration |
| PUKCC | Public Key Cryptography Controller |
| PUKCL | Public Key Cryptography Library |
| PWM | Pulse Width Modulation |
| QSPI | Quad I/O Serial Peripheral Interface |
| RF | Radio Frequency |
| RTCC | Real Time Counter |
| RSA | Rivest-Shamir-Adleman |
| RX | Receiver |
| SERCOM | Serial Communication Interfaces |
| SFD | Start Frame Delimiter |
| STA | Station |
| SAR | Successive Approximation Register |
| SPI | Serial Peripheral Interface |
| SWD | Serial Wire Debug |
| T/C | Timers/Counters |
| TCM | Tightly Coupled Memory |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| TPIU | Trace Port Interface Unit |
| TRNG | True Random Number Generator |
| TX | Transmitter |
| UART | Universal Asynchronous Receiver-Transmitter |
| WDT | Watchdog Timer |
| XDS | Extreme Deep Sleep |