SAML21J
Description
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.
Key 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 Access Controller (DMAC) - 12-channel Event System - Up to five 16-bit Timer/Counters (TC) including one low-power TC, each configurable as:
- 16-bit TC with two compare/capture channels
- 8-bit TC with two compare/capture channels
- 32-bit TC with two compare/capture channels, by using two TCs - Two 24-bit and one 16-bit Timer/Counters for Control (TCC), with extended functions:
