ATMEGA644PA-PUAlternatives & Equivalent Parts
About ATMEGA644PA-PU
ATMEGA644PA-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.
Specification Comparison
| Parameter | ATMEGA644PA-PUSource | ATMEGA32-16PU | ATMEGA48A-PU | ATMEGA8515L-8PU | ATMEGA8535L-8PU | ATMEGA1284-PU | ATMEGA644A-PU |
|---|---|---|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip |
| Package Type | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages |
| Pin Count | 40 | 40 | 28 | 40 | 40 | 40 | 40 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $4.9800 | $5.2100 | $1.9900 | $3.2400 | $2.8200 | $4.5007 | $4.0900 |
| Electrical Parameters | |||||||
| Pbfree Code | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Manufacturer Package Code | PDIP-40 | PDIP-40 | — | — | PDIP-40 | PDIP-40 | PDIP-40 |
| Factory Lead Time | 6 Weeks | 6 Weeks | — | — | — | 6 Weeks | 6 Weeks |
| YTEOL | 14 | 14 | 0 | 0 | 0 | 14 | 14 |
| Has ADC | YES | YES | YES | NO | YES | YES | YES |
| Additional Feature | IT ALSO OPERATES FROM 1.8V TO 5.5 V AT 4 MHZ | — | IT ALSO OPERATES 1.8V AT 4 MHZ | ALSO OPERATES AT 5 V NOMINAL | — | 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 | 8 | 8 | 8 | 8 | 8 |
| Boundary Scan | YES | YES | NO | NO | NO | YES | YES |
| CPU Family | AVR RISC | AVR RISC | AVR RISC | AVR RISC | AVR RISC | AVR RISC | AVR RISC |
| Clock Frequency-Max | 20 MHz | 16 MHz | 20 MHz | 8 MHz | 8 MHz | 20 MHz | 20 MHz |
| DAC Channels | NO | YES | NO | NO | NO | NO | NO |
| DMA Channels | NO | NO | NO | NO | NO | NO | NO |
| Format | FIXED POINT | FIXED POINT | FIXED POINT | FIXED POINT | FIXED POINT | FIXED POINT | FIXED POINT |
| Integrated Cache | NO | NO | NO | NO | NO | NO | NO |
| JESD-30 Code | R-PDIP-T40 | R-PDIP-T40 | R-PDIP-T28 | R-PDIP-T40 | R-PDIP-T40 | R-PDIP-T40 | R-PDIP-T40 |
| JESD-609 Code | e3 | e3 | e3 | e3 | e3 | e3 | e3 |
| Low Power Mode | YES | YES | YES | YES | YES | YES | YES |
| Number of External Interrupts | 3 | 3 | 2 | 3 | 3 | 3 | 3 |
| Number of I/O Lines | 32 | 32 | 23 | 35 | 32 | 32 | 32 |
| Number of Serial I/Os | 2 | 1 | 1 | 1 | 1 | 2 | 2 |
| Number of Timers | 3 | 3 | 3 | 2 | 3 | 3 | 3 |
| On Chip Data RAM Width | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| On Chip Program ROM Width | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| PWM Channels | YES | YES | YES | YES | YES | YES | YES |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP40,.6 | DIP40,.6 | DIP28,.3 | DIP40,.6 | DIP40,.6 | DIP40,.6 | DIP40,.6 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | IN-LINE | IN-LINE | IN-LINE | IN-LINE | IN-LINE | IN-LINE |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| RAM (bytes) | 4096 | 2048 | 512 | 512 | 512 | 16384 | 4096 |
| RAM (words) | 4096 | — | 512 | — | — | 16384 | 4096 |
| ROM (words) | 65536 | 32768 | 4096 | 8192 | 8192 | 131072 | 65536 |
| ROM Programmability | FLASH | FLASH | FLASH | FLASH | FLASH | FLASH | FLASH |
| Speed | 20 MHz | 16 MHz | 20 MHz | 8 MHz | 8 MHz | 20 MHz | 20 MHz |
| Supply Current-Max | 9 mA | 15 mA | 12 mA | 4 mA | — | 12 mA | 9 mA |
| Supply Voltage-Max | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage-Min | 5 V | 5 V | 5 V | 3 V | 3 V | 5 V | 5 V |
| Supply Voltage-Nom | 5 V | 5 V | 5 V | 3 V | 3 V | 5 V | 5 V |
| Surface Mount | NO | NO | NO | NO | NO | NO | NO |
| Technology | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) | MATTE TIN | MATTE TIN | MATTE TIN | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm |
| Terminal Position | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| ## ATMEGA644PA-PU Alternates Showing results | Image | — | — | — | — | — | — |
| ## ATMEGA32-16PU Alternates Showing results | — | Image | — | — | — | — | — |
| Address Bus Width | — | — | — | 16 | — | — | — |
| External Data Bus Width | — | — | — | 8 | — | — | — |
| ## ATMEGA8515L-8PU Alternates Showing results | — | — | — | Image | — | — | — |
| ## ATMEGA8535L-8PU Alternates Showing results | — | — | — | — | Image | — | — |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PDIP40
Why Look for Alternatives?
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What is equivalent to ATMEGA644PA-PU?
Known equivalents for ATMEGA644PA-PU include ATMEGA32-16PU, ATMEGA48A-PU, ATMEGA8515L-8PU. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of ATMEGA644PA-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 ATMEGA644PA-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.