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AT13382: Migrating from SAM L21 variant A to variant B
Introduction
1 Changes from SAM L21A to SAM L21B
1.1 Non-Volatile Memory Controller (NVMCTRL)
1.2 Supply Controller (SUPC)
1.3 Power Manager (PM)
1.4 External 32kHz Crystal Oscillator (XOSC32K)
1.5 RTC
1.6 High-speed Bus Matrix (HMATRIX)
2 Pinout Changes
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3 Revision History