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SAML21J Dataheets PDF



Part Number SAML21J
Manufacturers Microchip
Logo Microchip
Description ultra-low power microcontroller
Datasheet SAML21J DatasheetSAML21J Datasheet (PDF)

SAM L21 Family Data Sheet SAM L21 Introduction Atmel® SMART SAM L21 is a series of ultra-low power microcontrollers using 32-bit Arm® Cortex®-M0+ processor at maximum 48 MHz (2.46 CoreMark®/MHz) and up to 256 KB Flash and 40 KB of SRAM in a 32-pin, 48-pin, and 64-pin packages. The sophisticated power management technologies, such as power domain gating, SleepWalking, ultra-low power peripherals allow very low-power consumptions. The highly configurable peripherals include a touch controller sup.

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SAM L21 Family Data Sheet SAM L21 Introduction Atmel® SMART SAM L21 is a series of ultra-low power microcontrollers using 32-bit Arm® Cortex®-M0+ processor at maximum 48 MHz (2.46 CoreMark®/MHz) and up to 256 KB Flash and 40 KB of SRAM in a 32-pin, 48-pin, and 64-pin packages. The sophisticated power management technologies, such as power domain gating, SleepWalking, ultra-low power peripherals allow very low-power 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 48 MHz • Single-cycle hardware multiplier • Micro Trace Buffer • Memories – 32/64/128/256-KB in-system self-programmable Flash – 1/2/4/8-KB Flash Read-While-Write section – 4/8/16/32-KB SRAM main memory – 2/4/8/8-KB 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, testing, and debugging interface • Low Power – Idle, Stand-by, Backup, and Off Sleep modes – SleepWalking peripherals – 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: Complete Data Sheet © 2023 Microchip Technology Inc. and its subsidiaries DS60001477E - 1 SAM L21 • 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: • Up to four compare channels with optional complementary output • Generation of synchronized pulse width modulation (PWM) pattern across port pins • Deterministic fault protection, fast decay and configurable dead-time between complementary output • Dithering that increase resolution with up to 5 bit and reduce quantization error – PWM Outputs using TC and TCC peripherals: • Up to four PWM channels on each 24-bit TCC • Up to two PWM channels on each 16-bit TC – 32-bit Real Time Counter (RTC) with clock/calendar function – Watchdog Timer (WDT) – CRC-32 generator – One full-speed (12 Mbps) Universal Serial Bus (USB) 2.0 interface • Embedded host and device function • Eight endpoints – Up to six Serial Communication Interfaces (SERCOM) including one low-power SERCOM, each configurable to operate as either: • USART with full-duplex and single-wire half-duplex configuration • I2C up to 3.4 MHz • SPI • LIN Client – One AES encryption engine – One True Random Generator (TRNG) – One Configurable Custom Logic (CCL) – One 12-bit, 1 Msps Analog-to-Digital Converter (ADC) with up to 20 channels • Differential and single-ended input • Automatic offset and gain error compensation • Oversampling and decimation in hardware to support 13-bit, 14-bit, 15-bit, or 16-bit resolution – Two 12-bit, 1 Msps dual output Digital-to-Analog Converter (DAC) – Two Analog Comparators (AC) with window compare function – Three Operational Amplifiers (OPAMP) – Peripheral Touch Controller (PTC) • 169-channel capacitive touch and proximity sensing • Wake up on touch in Standby mode • Oscillators – 32.768 kHz crystal oscillator (XOSC32K) – 0.4-32 MHz crystal oscillator (XOSC) – 32.768 kHz internal oscillator (OSC32K) – 32.768 kHz ultra-low power internal oscillator (OSCULP32K) Complete Data Sheet © 2023 Microchip Technology Inc. and its subsidiaries DS60001477E - 2 – 16/12/8/4 MHz high-accuracy internal oscillator (OSC16M) – 48 MHz Digital Frequency Locked Loop (DFLL48M) – 96 MHz Fractional Digital Phased Locked Loop (FDPLL96M) • I/O – Up to 51 programmable I/O pins • Easy migration from the SAM D family of devices • Packages – 64-pin TQFP, QFN, WLCSP – 48-pin TQFP, QFN – 32-pin TQFP, QFN • Operating voltage – 1.62V – 3.63V • Temperature range – -40°C to 85°C – -40°C to 105°C SAM L21 Complete Data Sheet © 2023 Microchip Technology Inc. and its subsidiaries DS60001477E - 3 SAM L21 Table of Contents Introduction........................................................................................................................................................................... 1 Features................................................................................................................................................................................. 1 1. Description.....................................................................................................................................


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