Microchip Technology ATSAML21G
ATSAML21G variants from Microchip Technology
ATSAML21G Overview
What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.
Key Features
- Footprint / package: 48-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.
- 7 distinct suffix patternsExamples: 16B, 17B, 18B, 17B-ANT, 17B-MUT (+2 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 7 ATSAML21G 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 |
|---|---|---|---|---|---|---|---|
| ATSAML21G16B | | Official Price: 3.0200 | Official Product URL: https://www.microchip.com/en-us/product/ATSAML21G16B | - | Microchip Technology | Active | Compliant | In Stock | |
| ATSAML21G17B | | Official Price: 3.2300 | Official Product URL: https://www.microchip.com/en-us/product/ATSAML21G17B | - | Microchip Technology | Active | Compliant | In Stock | |
| ATSAML21G18B | | Official Price: 4.5000 | Official Product URL: https://www.microchip.com/en-us/product/ATSAML21G18B | - | Microchip Technology | Active | Compliant | In Stock | |
| ATSAML21G17B-ANT | Package: 48-TQFP | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 105°C (TA) | Supplier Device Package: 48-TQFP (7x7) | Peripherals: DMA, POR, PWM, WDT | Number of I O: 37 | 48-TQFP | Microchip Technology | Active | Compliant | In Stock | |
| ATSAML21G17B-MUT | IC MCU 32BIT 128KB FLASH 48QFN | - | Microchip Technology | Active | Compliant | In Stock | |
| ATSAML21G18B-ANT | Package: 48-TQFP | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 105°C (TA) | Supplier Device Package: 48-TQFP (7x7) | Peripherals: DMA, POR, PWM, WDT | Number of I O: 37 | 48-TQFP | Microchip Technology | Active | Compliant | In Stock | |
| ATSAML21G18B-MUT | IC MCU 32BIT 256KB FLASH 48QFN | - | Microchip Technology | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on ATSAML21G map to package, grade, and reel options.
How to Choose the Right ATSAML21G Microcontrollers
Match the footprint first
Packages here: 48-TQFP. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For ATSAML21G, 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 "ATSAML21G" — include the full suffix (e.g. 16B, 17B, 18B). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for ATSAML21G product family
Identity
Variant Parameters
Source ATSAML21G with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 7 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
Frequently Asked Questions
Common technical questions about the ATSAML21G product family.