Microchip Technology ATXMEGA128D
ATXMEGA128D variants from Microchip Technology
ATXMEGA128D Overview
What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.
Key Features
- Footprint / package: https://www.microchipdirect.com/product/search/all/ATXMEGA128D3, https://www.microchipdirect.com/product/search/all/ATXMEGA128D4Land pattern and thermal pad differ between these packages — run a quick footprint check before you swap variants.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 6 distinct suffix patternsExamples: 3, 4, 3-MH, 4-AUR, 4-CU (+1 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 6 ATXMEGA128D 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 |
|---|---|---|---|---|---|---|---|
| ATXMEGA128D3 | Package: https://www.microchipdirect.com/product/search/all/ATXMEGA128D3 | Official Price: 4.3200 | Official Product URL: https://www.microchip.com/en-us/product/ATxmega128D3 | https://www.microchipdirect.com/product/search/all/ATXMEGA128D3 | Microchip Technology | Active | Compliant | In Stock | |
| ATXMEGA128D4 | Package: https://www.microchipdirect.com/product/search/all/ATXMEGA128D4 | Official Price: 4.3200 | Official Product URL: https://www.microchip.com/en-us/product/ATxmega128D4 | https://www.microchipdirect.com/product/search/all/ATXMEGA128D4 | Microchip Technology | Active | Compliant | In Stock | |
| ATXMEGA128D3-MH | IC MCU 8/16BIT 128KB FLASH 64QFN | - | Microchip Technology | Active | Compliant | In Stock | |
| ATXMEGA128D4-AUR | IC MCU 8/16BIT 128KB FLSH 44TQFP | - | Microchip Technology | Active | Compliant | In Stock | |
| ATXMEGA128D4-CU | IC MCU 8/16B 128KB FLASH 49VFBGA | - | Microchip Technology | Active | Compliant | In Stock | |
| ATXMEGA128D4-MHR | IC MCU 8/16BIT 128KB FLSH 44VQFN | - | Microchip Technology | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on ATXMEGA128D map to package, grade, and reel options.
How to Choose the Right ATXMEGA128D Microcontrollers
Match the footprint first
Packages here: https://www.microchipdirect.com/product/search/all/ATXMEGA128D3, https://www.microchipdirect.com/product/search/all/ATXMEGA128D4. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For ATXMEGA128D, 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 "ATXMEGA128D" — include the full suffix (e.g. 3, 4, 3-MH). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for ATXMEGA128D product family
Identity
Variant Parameters
Source ATXMEGA128D with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 6 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 ATXMEGA128D product family.