SAML21E

SMART ARM-based Microcontroller SAM L21E / SAM L21G / SAM L21J DATASHEET PRELIMINARY Introduction Atmel® | SMART SAM L21 is a series of Ultra low-power microcontrollers using the 32-bit ARM® Cortex®-M0+ processor at max. 48MHz (2.46 CoreMark®/MHz) and up to 256KB Flash and 44KB of SRAM in a 32-64 pin package. The sophisticated power management technologies, such as power domain gating, SleepWalking, Ultra low-power peripherals and more, allow for very low current consumptions. The highly configurable peripherals include a touch controller supporting capacitive interfaces with proximity sensing. Features Processor – ARM Cortex-M0+ CPU running at up to 48MHz Single-cycle hardware multiplier Micro Trace Buffer Memories – 32/64/128/256KB in-system self-programmable Flash – 1/2/4/8KB Flash Read-While-Write section – 4/8/16/32KB SRAM Main Memory – 2/4/8/8KB SRAM Low power Memory System – Power-on reset (POR) and brown-out detection (BOD) – Internal and external clock options – External Interrupt Controller (EIC) – 16 external interrupts – One non-maskable interrupt – Two-pin Serial Wire Debug (SWD) programming, test and debugging interface Low Power – Idle, Standby, Backup, and Off sleep modes – SleepWalking peripherals Atmel-42385C-SAM L21_Datasheet_Preliminary-03/2015 – Static and Dynamic Power Gating Architecture – Battery backup support – Two Performance Levels – Embedded Buck/LDO regulator supporting on-the-fly selection Peripherals – 16-channel Direct Memory Ac...