ATMEGA328-MUAlternatives & Equivalent Parts
About ATMEGA328-MU
ATMEGA328-MU 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.
Specification Comparison
| Parameter | ATMEGA328-MUSource | ATMEGA328P-MUR | ATMEGA328-MMH | ATMEGA328P-MNR | ATMEGA328-MMHR | ATMEGA328P-MMH |
|---|---|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip |
| Package Type | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead |
| Pin Count | 32 | 32 | 28 | 32 | 28 | 28 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 105.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $1.4160 | — | $1.6640 | — | — | $2.1200 |
| Electrical Parameters | ||||||
| Pbfree Code | Yes | Yes | Yes | Yes | Yes | Yes |
| Manufacturer Package Code | VQFN-32 | VQFN-32 | VQFN-28 | VQFN-32 | VQFN-28 | VQFN-28 |
| Factory Lead Time | 1 Week | 7 Weeks | 7 Weeks | 8 Weeks | 7 Weeks | 7 Weeks |
| YTEOL | 14 | 3 | 13 | 3 | 18 | 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 | IT ALSO OPERATES 1.8V AT 4 MHZ | 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-PQCC-N32 | S-PQCC-N32 | S-PQCC-N28 | S-PQCC-N32 | S-PQCC-N28 | S-PQCC-N28 |
| JESD-609 Code | e3 | e3 | e4 | e3 | e4 | e4 |
| 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 |
| Package Equivalence Code | LCC32,.2SQ,20 | LCC32,.2SQ,20 | LCC28,.16SQ,18 | LCC32,.2SQ,20 | LCC28,.16SQ,18 | LCC28,.16SQ,18 |
| Package Shape | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Qualification Status | 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 | 2.7 mA | 12 mA | 2.7 mA | 12 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 |
| Technology | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD |
| Terminal Pitch | 0.5 mm | 0.5 mm | 0.45 mm | 0.5 mm | 0.45 mm | 0.45 mm |
| Terminal Position | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| ## ATMEGA328-MU Alternates Showing results | Image | — | — | — | — | — |
| Peak Reflow Temperature (Cel) | — | 260 | — | — | — | — |
| Time@Peak Reflow Temperature-Max (s) | — | 40 | — | — | — | — |
| ## ATMEGA328P-MUR Alternates Showing results | — | Image | — | — | — | — |
| ## ATMEGA328P-MNR Alternates Showing results | — | — | — | Image | — | — |
| ## ATMEGA328P-MMH Alternates Showing results | — | — | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQCC32
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQCC32
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PQCC28
Why Look for Alternatives?
Finding alternatives for ATMEGA328-MU 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-MU 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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What is equivalent to ATMEGA328-MU?
Known equivalents for ATMEGA328-MU include ATMEGA328P-MUR, ATMEGA328-MMH, ATMEGA328P-MNR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of ATMEGA328-MU?
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-MU 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.