ATMEGA644A-PUAlternatives & Equivalent Parts
About ATMEGA644A-PU
ATMEGA644A-PU is a Integrated Circuit component manufactured by Microchip. It comes in a Dual-In-Line Packages 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 | ATMEGA644A-PUSource | ATMEGA644PA-PU |
|---|---|---|
| Manufacturer | Microchip | Microchip |
| Package Type | Dual-In-Line Packages | Dual-In-Line Packages |
| Pin Count | 40 | 40 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $4.0900 | $4.9800 |
| Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE |
| Electrical Parameters | ||
| Pbfree Code | Yes | Yes |
| Manufacturer Package Code | PDIP-40 | PDIP-40 |
| Factory Lead Time | 6 Weeks | 6 Weeks |
| YTEOL | 14 | 14 |
| Has ADC | YES | YES |
| Additional Feature | IT ALSO OPERATES FROM 1.8V TO 5.5 V AT 4 MHZ | IT ALSO OPERATES FROM 1.8V TO 5.5 V AT 4 MHZ |
| Bit Size | 8 | 8 |
| Boundary Scan | YES | YES |
| CPU Family | AVR RISC | AVR RISC |
| Clock Frequency-Max | 20 MHz | 20 MHz |
| DAC Channels | NO | NO |
| DMA Channels | NO | NO |
| Format | FIXED POINT | FIXED POINT |
| Integrated Cache | NO | NO |
| JESD-30 Code | R-PDIP-T40 | R-PDIP-T40 |
| JESD-609 Code | e3 | e3 |
| Low Power Mode | YES | YES |
| Number of External Interrupts | 3 | 3 |
| Number of I/O Lines | 32 | 32 |
| Number of Serial I/Os | 2 | 2 |
| 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 | DIP40,.6 | DIP40,.6 |
| Package Shape | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | IN-LINE |
| Qualification Status | Not Qualified | Not Qualified |
| RAM (bytes) | 4096 | 4096 |
| RAM (words) | 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 | NO | NO |
| Technology | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | 2.54 mm |
| Terminal Position | DUAL | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| ## ATMEGA644PA-PU Alternates Showing results | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Quick Links
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PDIP40
Why Look for Alternatives?
Finding alternatives for ATMEGA644A-PU 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 ATMEGA644A-PU 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 ATMEGA644A-PU?
Known equivalents for ATMEGA644A-PU include ATMEGA644PA-PU. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of ATMEGA644A-PU?
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 ATMEGA644A-PU 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.