ATMEGA328-AUAlternatives & Equivalent Parts
About ATMEGA328-AU
ATMEGA328-AU is a Integrated Circuit component manufactured by Microchip. It comes in a Quad Flat 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 | ATMEGA328-AUSource | ATMEGA328-AUR | 61231420621 | 24LC256-E/SN | ATMEGA328P-AU | ATMEGA328P-AUR | ATMEGA328P-AN | ATMEGA328P-ANR |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Würth Elektronik | Microchip | Microchip | Microchip | Microchip | Microchip |
| Package Type | Quad Flat Packages | Quad Flat Packages | Other | Small Outline Packages | Quad Flat Packages | Quad Flat Packages | Quad Flat Packages | Quad Flat Packages |
| Pin Count | 32 | 32 | 14 | 8 | 32 | 32 | 32 | 32 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 105.0°C | -40.0°C ~ 105.0°C |
| Price | $1.7700 | $1.5980 | $2.9300 | $0.4430 | $1.9300 | $2.3000 | $2.0200 | $0.9570 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | NOT RECOMMENDED | ACTIVE | NOT RECOMMENDED |
| Electrical Parameters | ||||||||
| Pbfree Code | Yes | Yes | — | Yes | Yes | Yes | Yes | Yes |
| Manufacturer Package Code | TQFP-32 | TQFP-32 | — | SOIC-8 | TQFP-32 | TQFP-32 | TQFP-32 | TQFP-32 |
| Factory Lead Time | 6 Weeks | 6 Weeks | — | 6 Weeks | 6 Weeks | 7 Weeks | 6 Weeks | 6 Weeks |
| YTEOL | 14 | 14 | 15 | 8 | 3 | 3 | 3 | 3 |
| Has ADC | YES | YES | — | — | YES | YES | YES | YES |
| Additional Feature | IT ALSO OPERATES 1.8V AT 4 MHZ | IT ALSO OPERATES 1.8V AT 4 MHZ | — | — | ALSO OPERATES AT 1.8V AT 4MHZ AND 2.7V AT 10 MHZ MINIMUM SUPPLY | IT ALSO OPERATES 1.8V AT 4 MHZ | IT ALSO OPERATES 1.8V AT 4 MHZ | IT ALSO OPERATES 1.8V AT 4 MHZ |
| Bit Size | 8 | 8 | — | — | 8 | 8 | 8 | 8 |
| Boundary Scan | NO | NO | — | — | NO | NO | NO | NO |
| CPU Family | AVR RISC | AVR RISC | — | — | AVR RISC | AVR RISC | AVR RISC | AVR RISC |
| Clock Frequency-Max | 20 MHz | 20 MHz | — | — | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| DAC Channels | NO | NO | — | — | NO | NO | NO | NO |
| DMA Channels | NO | NO | — | — | NO | NO | NO | NO |
| Format | FIXED POINT | FIXED POINT | — | — | FIXED POINT | FIXED POINT | FIXED POINT | FIXED POINT |
| Integrated Cache | NO | NO | — | — | NO | NO | NO | NO |
| JESD-30 Code | S-PQFP-G32 | S-PQFP-G32 | — | R-PDSO-G8 | S-PQFP-G32 | S-PQFP-G32 | S-PQFP-G32 | S-PQFP-G32 |
| JESD-609 Code | e3 | e3 | e4 | e3 | e3 | e3 | e3 | e3 |
| Low Power Mode | YES | YES | — | — | YES | YES | YES | YES |
| Number of External Interrupts | 2 | 2 | — | — | 2 | 2 | 2 | 2 |
| Number of I/O Lines | 23 | 23 | — | — | 23 | 23 | 23 | 23 |
| Number of Serial I/Os | 1 | 1 | — | — | 1 | 1 | 1 | 1 |
| Number of Timers | 3 | 3 | — | — | 3 | 3 | 3 | 3 |
| On Chip Data RAM Width | 8 | 8 | — | — | 8 | 8 | 8 | 8 |
| On Chip Program ROM Width | 16 | 16 | — | — | 16 | 16 | 16 | 16 |
| PWM Channels | 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 | TQFP32,.35SQ,32 | TQFP32,.35SQ,32 | — | SOP8,.23 | TQFP32,.35SQ,32 | QFP32,.35SQ,32 | QFP32,.35SQ,32 | QFP32,.35SQ,32 |
| Package Shape | SQUARE | SQUARE | — | RECTANGULAR | SQUARE | SQUARE | SQUARE | SQUARE |
| Package Style | FLATPACK, THIN PROFILE | FLATPACK, THIN PROFILE | — | SMALL OUTLINE | FLATPACK, THIN PROFILE | FLATPACK, THIN PROFILE | FLATPACK, THIN PROFILE | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 | 260 | — | 260 | 260 | 260 | 260 | 260 |
| Qualification Status | Not Qualified | Not Qualified | — | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| RAM (bytes) | 2048 | 2048 | — | — | 2048 | 2048 | 2048 | 2048 |
| RAM (words) | 2048 | 2048 | — | — | 2048 | 2048 | 2048 | 2048 |
| ROM (words) | 16384 | 16384 | — | — | 16384 | 16384 | 16384 | 16384 |
| ROM Programmability | FLASH | FLASH | — | — | FLASH | FLASH | FLASH | FLASH |
| Speed | 20 MHz | 20 MHz | — | — | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Current-Max | 12 mA | 12 mA | — | 0.003 mA | 9 mA | 2.7 mA | 2.7 mA | 2.7 mA |
| Supply Voltage-Max | 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 | 5 V | 5 V | 5 V |
| Supply Voltage-Nom | 5 V | 5 V | — | — | 5 V | 5 V | 5 V | 5 V |
| Surface Mount | YES | YES | — | YES | YES | YES | YES | YES |
| Technology | CMOS | CMOS | — | CMOS | CMOS | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL | — | AUTOMOTIVE | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) | — | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | GULL WING | GULL WING | — | GULL WING | GULL WING | GULL WING | GULL WING | GULL WING |
| Terminal Pitch | 0.8 mm | 0.8 mm | 2.54 mm | 1.27 mm | 0.8 mm | 0.8 mm | 0.8 mm | 0.8 mm |
| Terminal Position | QUAD | QUAD | — | DUAL | QUAD | QUAD | QUAD | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | — | — | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| ## ATMEGA328-AU Alternates Showing results | Image | — | — | — | — | — | — | — |
| ## ATMEGA328-AUR Alternates Showing results | — | Image | — | — | — | — | — | — |
| Body Breadth | — | — | 0.36 inch | — | — | — | — | — |
| Body Depth | — | — | 0.398 inch | — | — | — | — | — |
| Body Length | — | — | 1.007 inch | — | — | — | — | — |
| Body/Shell Style | — | — | RECEPTACLE | — | — | — | — | — |
| Connector Type | — | — | BOARD CONNECTOR | — | — | — | — | — |
| Contact Finish Mating | — | — | NOT APPLICABLE | — | — | — | — | — |
| Contact Gender | — | — | MALE | — | — | — | — | — |
| Contact Material | — | — | NOT APPLICABLE | — | — | — | — | — |
| Contact Pattern | — | — | RECTANGULAR | — | — | — | — | — |
| Contact Resistance | — | — | 20 mΩ | — | — | — | — | — |
| Contact Style | — | — | SQ PIN-SKT | — | — | — | — | — |
| DIN Conformance | — | — | NO | — | — | — | — | — |
| Dielectric Withstanding Voltage | — | — | 500VAC V | — | — | — | — | — |
| Filter Feature | — | — | NO | — | — | — | — | — |
| IEC Conformance | — | — | NO | — | — | — | — | — |
| Insulation Resistance | — | — | 1000000000 Ω | — | — | — | — | — |
| Insulator Color | — | — | BLACK | — | — | — | — | — |
| Insulator Material | — | — | POLYAMIDE | — | — | — | — | — |
| MIL Conformance | — | — | NO | — | — | — | — | — |
| Mating Contact Pitch | — | — | 0.1 inch | — | — | — | — | — |
| Mating Contact Row Spacing | — | — | 0.1 inch | — | — | — | — | — |
| Mixed Contacts | — | — | NO | — | — | — | — | — |
| Mounting Option 1 | — | — | LOCKING | — | — | — | — | — |
| Mounting Style | — | — | STRAIGHT | — | — | — | — | — |
| Mounting Type | — | — | BOARD | — | — | — | — | — |
| Number Of Connectors | — | — | ONE | — | — | — | — | — |
| Number Of PCB Rows | — | — | 2 | — | — | — | — | — |
| Number of Rows Loaded | — | — | 2 | — | — | — | — | — |
| Option | — | — | GENERAL PURPOSE | — | — | — | — | — |
| PCB Contact Pattern | — | — | RECTANGULAR | — | — | — | — | — |
| PCB Contact Row Spacing | — | — | 5.9944 mm | — | — | — | — | — |
| Polarization Key | — | — | POLARIZED HOUSING | — | — | — | — | — |
| Rated Current (Signal) | — | — | 3 A | — | — | — | — | — |
| Reference Standard | — | — | UL | — | — | — | — | — |
| Termination Type | — | — | SURFACE MOUNT | — | — | — | — | — |
| Total Number of Contacts | — | — | 14 | — | — | — | — | — |
| UL Flammability Code | — | — | 94V-0 | — | — | — | — | — |
| Clock Frequency-Max (fCLK) | — | — | — | 0.4 MHz | — | — | — | — |
| Data Retention Time-Min | — | — | — | 200 | — | — | — | — |
| Endurance | — | — | — | 1000000 Write/Erase Cycles | — | — | — | — |
| I2C Control Byte | — | — | — | 1010DDDR | — | — | — | — |
| Memory Density | — | — | — | 262144 bit | — | — | — | — |
| Memory IC Type | — | — | — | EEPROM | — | — | — | — |
| Memory Width | — | — | — | 8 | — | — | — | — |
| Number of Functions | — | — | — | 1 | — | — | — | — |
| Number of Ports | — | — | — | 1 | — | — | — | — |
| Number of Words | — | — | — | 32768 words | — | — | — | — |
| Number of Words Code | — | — | — | 32000 | — | — | — | — |
| Operating Mode | — | — | — | SYNCHRONOUS | — | — | — | — |
| Organization | — | — | — | 32KX8 | — | — | — | — |
| Output Characteristics | — | — | — | OPEN-DRAIN | — | — | — | — |
| Parallel/Serial | — | — | — | SERIAL | — | — | — | — |
| Programming Voltage | — | — | — | 4.5 V | — | — | — | — |
| Screening Level | — | — | — | AEC-Q100 | — | — | — | — |
| Serial Bus Type | — | — | — | I2C | — | — | — | — |
| Standby Current-Max | — | — | — | 0.000005 A | — | — | — | — |
| Supply Voltage-Max (Vsup) | — | — | — | 5.5 V | — | — | — | — |
| Supply Voltage-Min (Vsup) | — | — | — | 2.5 V | — | — | — | — |
| Supply Voltage-Nom (Vsup) | — | — | — | 4.5 V | — | — | — | — |
| Write Cycle Time-Max (tWC) | — | — | — | 5 ms | — | — | — | — |
| Write Protection | — | — | — | HARDWARE | — | — | — | — |
| ## ATMEGA328P-AU Alternates Showing results | — | — | — | — | Image | — | — | — |
| ## ATMEGA328P-AUR Alternates Showing results | — | — | — | — | — | Image | — | — |
| ## ATMEGA328P-AN Alternates Showing results | — | — | — | — | — | — | Image | — |
| ## ATMEGA328P-ANR Alternates Showing results | — | — | — | — | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 7 alternatives for ATMEGA328-AU — response within 24 hours.
Quick Links
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQFP32
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RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQFP32
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQFP32
Why Look for Alternatives?
Finding alternatives for ATMEGA328-AU 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 ATMEGA328-AU 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 ATMEGA328-AU?
Known equivalents for ATMEGA328-AU include ATMEGA328-AUR, 61231420621, 24LC256-E/SN. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of ATMEGA328-AU?
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 ATMEGA328-AU 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.