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ATSAMD21E15B-AFT

MCHPATSAMD21E15B-AFT

Microchip Technology
ARM® Cortex®-M0+ SAM D21E, Functional Safety (FuSa) Microcontroller IC 32-Bit 48MHz 32KB (32K x 8) FLASH 32-TQFP (7x7)
Active2,970 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ATSAMD21E15B-AFT is a 32-bit ARM Cortex-M0+ microcontroller operating at 48MHz, specifically optimized for functional safety (FuSa) applications. It features 32KB of flash and 4KB of RAM in a compact 32-TQFP package, providing a balance of low power consumption and flexible peripheral support including USB and multiple serial interfaces.

Why Choose This Part

This microcontroller is ideal for high-reliability environments due to its functional safety readiness and robust peripheral set including a Full-Speed USB 2.0 interface. Its wide operating voltage down to 1.62V and low-power sleep modes make it excellent for modern energy-conscious embedded designs.

Applications

Functional Safety Controllers
Utilizing integrated safety features to meet industrial and automotive safety standards in small-scale control systems.
USB Peripherals
Implementing cost-effective USB-to-serial bridges or human interface devices (HID) in space-constrained designs.
Industrial Sensor Nodes
Processing analog and digital signals from sensors while maintaining low power consumption and reliable communication via SPI or I2C.
Battery-Powered Medical Devices
Leveraging the energy-efficient Cortex-M0+ core for portable monitoring equipment requiring long battery life and a 1.62V to 3.6V supply range.

Key Specifications

Speed 48MHz
RAM Size 4K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
Connectivity I2C, LINbus, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 26
Core Processor ARM Cortex-M0+
Package / Case 32-TQFP
Data Converters A/D 10x12b; D/A 1x10b
Oscillator Type Internal
Program Memory Size 32KB (32K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 32-TQFP (7x7)
Voltage - Supply (Vcc/Vdd) 1.62V ~ 3.6V

Getting Started

Develop applications using the Microchip Studio or MPLAB X IDEs combined with the XC32 compiler. For hardware evaluation, the SAM D21 Curiosity Nano or Xplained Pro evaluation kits provide a rapid prototyping platform with full debugger integration.

Dev Boards

Development boards and breakout modules featuring the ATSAMD21E15B-AFT or compatible chips — ready to use for prototyping.

Seeed Studio XIAO SAMD21 Seeed Technology Co., Ltd
ATSAMD21G18 XIAO SAMD21 SAM D ARM® Cortex®-M0 MCU 32-Bit Embedded Evaluation Board
Digi-Key 509 in stock
Seeed Studio XIAO SAMD21 Seeed Technology Co., Ltd
ATSAMD21G18 XIAO SAMD21 SAM D ARM® Cortex®-M0+ MCU 32-Bit Embedded Evaluation Board
Digi-Key 3,701 in stock
Adafruit Feather M0 Express Adafruit Industries LLC
ATSAMD21G18 Feather M0 Express SAM D ARM® Cortex®-M0+ MCU 32-Bit Embedded Evaluation Board
Digi-Key Mouser 55 in stock
The Arduino Nano 33 IoT with Headers (ABX00032) is a compact and versatile development board featuring the ARM® Cortex®-
Digi-Key Mouser 355 in stock
The Arduino Nano 33 IoT (ABX00027) is an advanced evaluation platform designed for IoT applications, featuring the 32 bi
Digi-Key Mouser 657 in stock
Part of SAM Microcontrollers family » SAMD21E

SAMD21E Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number RAM Package Flash Temp Range Stock
ATSAMD21E15B-AFT (this part) 4K TQFP-32 32KB -40degC ~ 125degC .. 2,970
ATSAMD21E18A-MUT 32K VFQFN-32 256KB -40degC ~ 85degC (.. 24,578
ATSAMD21E18A-AUT 32K TQFP-32 256KB -40degC ~ 85degC (.. 11,120
ATSAMD21E18A-AFT 32K TQFP-32 256KB -40degC ~ 125degC .. 11,484
ATSAMD21E18A-AU (Microchip) 32K TQFP-32 256KB -40degC ~ 85degC (.. 1,742
ATSAMD21E17A-AUT 16K TQFP-32 128KB -40degC ~ 85degC (.. 2,730
Also available as: ATSAMD21E17D-MZVAO, ATSAMD21E16B-AZVAO, ATSAMD21E18A-AZVAO, ATSAMD21E17D-AZVAO, ATSAMD21E18A-MZVAO, ATSAMD21E15B-MFT

Also Consider

ATSAMD21E18A-AFT MCHPMicrochip Technology - Offers significantly more memory with 256KB Flash and 32KB RAM in the same 32-pin footprint.
STM32L031K6T6 STMicroelectronics - An alternative ultra-low-power Cortex-M0+ MCU with a similar 32-pin package and flash size.