Contents
Introduction
2. Changes from SAM L21A to SAM L21B
2.1. Non-Volatile Memory Controller (NVMCTRL)
2.1.1. Reset Value of CTRLB.MANW Changed
2.2. Supply Controller (SUPC)
2.2.1. Low-power Configuration for Regulator Added
2.3. Power Manager (PM)
2.3.1. STDBYCFG.AVREGSD replaced by STDBYCFG.VREGSMOD
2.3.2. PLCFG.PLDIS Added
2.4. External 32kHz Crystal Oscillator (XOSC32K)
2.4.1. Internal Load Capacitor Removed
2.5. RTC
2.6. High-speed Bus Matrix (HMATRIX)
2.6.1. Low Latency Mode Added
3. Pinout Changes
4. Legal Disclaimer
5. Revision History