Microchip Technology ATMEGA644P
ATMEGA644P variants from Microchip Technology
ATMEGA644P 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/ATMEGA644PSingle 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.
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 2 ATMEGA644P 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 |
|---|---|---|---|---|---|---|---|
| ATMEGA644P | Package: https://www.microchipdirect.com/product/search/all/ATMEGA644P | Official Price: 5.1000 | Official Product URL: https://www.microchip.com/en-us/product/ATmega644P | https://www.microchipdirect.com/product/search/all/ATMEGA644P | Microchip Technology | Active | Compliant | In Stock | |
| ATMEGA644P-A15MZ | IC MCU 8BIT 64KB FLASH 44VQFN | - | Microchip Technology | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on ATMEGA644P map to package, grade, and reel options.
How to Choose the Right ATMEGA644P Microcontrollers
Match the footprint first
Packages here: https://www.microchipdirect.com/product/search/all/ATMEGA644P. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For ATMEGA644P, 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 "ATMEGA644P" — include the full suffix (e.g. A15MZ). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for ATMEGA644P product family
Identity
Variant Parameters
Source ATMEGA644P with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 2 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 ATMEGA644P product family.