ATMEGA644-20AURAlternatives & Equivalent Parts
About ATMEGA644-20AUR
ATMEGA644-20AUR is a Integrated Circuit component manufactured by Microchip. It comes in a Quad Flat No-Lead package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | ATMEGA644-20AURSource | ATMEGA644-20AU |
|---|---|---|
| Manufacturer | Microchip | Microchip |
| Package Type | Quad Flat No-Lead | Quad Flat Packages |
| Pin Count | 44 | 44 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $5.0800 | $5.5300 |
| Stock | In Stock | In Stock |
| Lifecycle | NOT RECOMMENDED | NOT RECOMMENDED |
| Electrical Parameters | ||
| Pbfree Code | Yes | Yes |
| Manufacturer Package Code | TQFP-44 | TQFP-44 |
| Factory Lead Time | 9 Weeks | 9 Weeks |
| YTEOL | 3 | 3 |
| Has ADC | YES | YES |
| Additional Feature | ALSO OPERATES AT 2.7V SUPPLY AT 10 MHZ | ALSO OPERATES AT 2.7V SUPPLY AT 10 MHZ |
| Bit Size | 8 | 8 |
| Boundary Scan | YES | YES |
| CPU Family | AVR RISC | AVR RISC |
| Clock Frequency-Max | 16 MHz | 16 MHz |
| DAC Channels | NO | NO |
| DMA Channels | NO | NO |
| Format | FIXED POINT | FIXED POINT |
| Integrated Cache | NO | NO |
| JESD-30 Code | S-PQFP-G44 | S-PQFP-G44 |
| JESD-609 Code | e3 | e3 |
| Low Power Mode | YES | YES |
| Number of External Interrupts | 35 | 35 |
| Number of I/O Lines | 32 | 32 |
| Number of Serial I/Os | 1 | 1 |
| Number of Timers | 3 | 3 |
| On Chip Data RAM Width | 8 | 8 |
| On Chip Program ROM Width | 8 | 8 |
| PWM Channels | YES | YES |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP44,.39SQ,31 | TQFP44,.39SQ,31 |
| Package Shape | SQUARE | SQUARE |
| Package Style | FLATPACK, THIN PROFILE | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 | 260 |
| Qualification Status | Not Qualified | Not Qualified |
| RAM (bytes) | 4096 | 4096 |
| ROM (words) | 65536 | 65536 |
| ROM Programmability | FLASH | FLASH |
| Speed | 20 MHz | 20 MHz |
| Supply Current-Max | 9 mA | 9 mA |
| Supply Voltage-Max | 5.5 V | 5.5 V |
| Supply Voltage-Min | 5 V | 5 V |
| Supply Voltage-Nom | 5 V | 5 V |
| Surface Mount | YES | YES |
| Technology | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | GULL WING | GULL WING |
| Terminal Pitch | 0.8 mm | 0.8 mm |
| Terminal Position | QUAD | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| ## ATMEGA644-20AU Alternates Showing results | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Get one quote covering this alternative for ATMEGA644-20AUR — response within 24 hours.
Quick Links
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQFP44
Why Look for Alternatives?
Finding alternatives for ATMEGA644-20AUR is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating ATMEGA644-20AUR replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to ATMEGA644-20AUR?
Known equivalents for ATMEGA644-20AUR include ATMEGA644-20AU. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of ATMEGA644-20AUR?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify ATMEGA644-20AUR alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.