Microchip Technology ATSAMD21E

ATSAMD21E variants from Microchip Technology

Variants

Mfr

Microchip Technology

Packages

32-TQFP

Lifecycle

Active

ATSAMD21E Overview

What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.

ATSAMD21E is a Microchip Technology order-code family — not a single orderable MPN. This page lists 20 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.

| Official Price: 1.6900 | Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E15 Other listed variants describe: | Official Price: 1.7400 | Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E15L; | Official Price: 1.9500 | Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E16.

Across listed variants, watch these parameters: packages: 32-TQFP.

Suffix examples in this family: 15, 15L, 16, 16L, 17, 17L, 18, 16B-MFT. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.

Example MPNs: ATSAMD21E15, ATSAMD21E15L, ATSAMD21E16, ATSAMD21E16L, ATSAMD21E17, ATSAMD21E17L.

Key Features

Footprint / package: 32-TQFPSingle package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
20 distinct suffix patternsExamples: 15, 15L, 16, 16L, 17 (+15 more). Decode suffix meaning in the ordering notes under the variant table.

Target Applications

Microcontrollers — design-in and field replacement
BOM scrub where only the base prefix is known but suffix is TBD
Second-source checks when the original MPN is constrained

Ordering Variants

Compare 20 ATSAMD21E part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part Number	Description	Package Type	Manufacturer	Lifecycle	RoHS	Availability	Action
ATSAMD21E15	\| Official Price: 1.6900 \| Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E15	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E15L	\| Official Price: 1.7400 \| Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E15L	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E16	\| Official Price: 1.9500 \| Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E16	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E16L	\| Official Price: 2.0300 \| Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E16L	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E17	\| Official Price: 1.8800 \| Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E17	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E17L	\| Official Price: 2.1500 \| Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E17L	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E18	\| Official Price: 2.4300 \| Official Product URL: https://www.microchip.com/en-us/product/ATSAMD21E18	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E16B-MFT	IC MCU 32BIT 64KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E16B-MUT	IC MCU 32BIT 64KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E16L-MF	IC MCU 32BIT 64KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E16L-MFT	IC MCU 32BIT 64KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E16L-MNT	IC MCU 32BIT 64KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E17A-MFT	IC MCU 32BIT 128KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E17D-AUT	Package: 32-TQFP \| Mounting Type: Surface Mount \| Operating Temperature: -40°C ~ 85°C (TA) \| Supplier Device Package: 32-TQFP (7x7) \| Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT \| Number of I O: 26	32-TQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E17D-MU	IC MCU 32BIT 128KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E17L-AF	IC MCU 32BIT 128KB FLASH 32TQFP	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E17L-MF	IC MCU 32BIT 128KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E18A-AUT	IC MCU 32BIT 256KB FLASH 32TQFP	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E18A-MFT	IC MCU 32BIT 256KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATSAMD21E18A-MUT	IC MCU 32BIT 256KB FLASH 32QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on ATSAMD21E map to package, grade, and reel options.

ATSAMD21E uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.

Suffixes seen here: 15, 15L, 16, 16L, 17, 17L, 18, 16B-MFT, 16B-MUT, 16L-MF (+10 more).

Full MPN examples: ATSAMD21E15, ATSAMD21E15L, ATSAMD21E16, ATSAMD21E16L, ATSAMD21E17.

Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.

How to Choose the Right ATSAMD21E Microcontrollers

📦

Match the footprint first

Packages here: 32-TQFP. Open the land-pattern drawing before you substitute a different suffix.

⚡

Electrical headroom

Compare voltage and current columns in the variant table. For ATSAMD21E, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.

🌡️

Temp grade letter matters

Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.

🔢

Copy the full MPN

Do not BOM only "ATSAMD21E" — include the full suffix (e.g. 15, 15L, 16). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for ATSAMD21E product family

Identity

Base Model

ATSAMD21E

Manufacturer

Microchip Technology

Listed Variants

Variant Parameters

Package Type

32-TQFP

Lifecycle Status

Active

RoHS Status

Compliant

Source ATSAMD21E with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 20 ordering variants from Microchip Technology. Our team supports active, EOL, and hard-to-find component sourcing.

Original manufacturer parts with traceability options
BOM upload and multi-line RFQ support
Package, grade, and compliance verification

Request Quote View Microchip Technology Browse all base models →

Frequently Asked Questions

Common technical questions about the ATSAMD21E product family.

Is ATSAMD21E a single part I can order, or a family prefix?

ATSAMD21E is a base / family code from Microchip Technology. You order a full MPN such as ATSAMD21E15, ATSAMD21E15L, ATSAMD21E16. The variant table lists 20 orderable lines with different suffixes.

What do the suffix letters on ATSAMD21E part numbers mean?

Listed suffix fragments include: 15, 15L, 16, 16L, 17, 17L. Typically they encode package (32-TQFP), temperature grade, and tape/reel option. Always decode on the Microchip Technology datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of ATSAMD21E variants?

Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.

What should I send for an RFQ on ATSAMD21E?

Full manufacturer MPN (not just ATSAMD21E), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.