ATMEGA328P-20PUAlternatives & Equivalent Parts
About ATMEGA328P-20PU
ATMEGA328P-20PU 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.
Need pricing on these alternatives?
Get one quote covering all 5 alternatives for ATMEGA328P-20PU — response within 24 hours.
Specification Comparison
| Parameter | ATMEGA328P-20PUSource | UC3845BN | ATMEGA328PB-MNR | ATMEGA328P-PU | ATMEGA328-PU | ATMEGA328P-PN |
|---|---|---|---|---|---|---|
| Manufacturer | Microchip | STMicroelectronics | Microchip | Microchip | Microchip | Microchip |
| Package Type | Dual-In-Line Packages | Dual-In-Line Packages | Quad Flat No-Lead | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages |
| Pin Count | 28 | 8 | 32 | 28 | 28 | 28 |
| Temperature Range | -40.0°C ~ 85.0°C | ~ 70.0°C | -40.0°C ~ 105.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 105.0°C |
| Price | — | $0.2847 | $1.2000 | $2.1400 | $2.0110 | $2.2000 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | OBSOLETE | ACTIVE | ACTIVE | NOT RECOMMENDED | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||
| YTEOL | 0 | 6 | 18 | 3 | 14 | 3 |
| Has ADC | YES | — | YES | YES | YES | YES |
| Additional Feature | IT ALSO OPERATES 2.7V AT 10 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 |
| Clock Frequency-Max | 20 MHz | — | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| DAC Channels | NO | — | NO | YES | YES | YES |
| DMA Channels | NO | — | NO | NO | NO | NO |
| JESD-30 Code | R-PDIP-T28 | R-PDIP-T8 | S-PQCC-N32 | R-PDIP-T28 | R-PDIP-T28 | R-PDIP-T28 |
| Number of I/O Lines | 23 | — | 27 | 23 | 23 | 23 |
| PWM Channels | YES | — | YES | YES | YES | YES |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR | RECTANGULAR | SQUARE | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | IN-LINE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | IN-LINE | IN-LINE | IN-LINE |
| Qualification Status | Not Qualified | Not Qualified | — | Not Qualified | Not Qualified | Not Qualified |
| ROM Programmability | FLASH | — | FLASH | FLASH | FLASH | FLASH |
| Speed | 20 MHz | — | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage-Max | 5.5 V | — | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage-Min | 4.5 V | — | 4.5 V | 5 V | 5 V | 5 V |
| Supply Voltage-Nom | 5 V | — | 5 V | 5 V | 5 V | 5 V |
| Surface Mount | NO | NO | YES | NO | NO | NO |
| Technology | CMOS | BIPOLAR | CMOS | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | COMMERCIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE | NO LEAD | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | 2.54 mm | 0.5 mm | 2.54 mm | 2.54 mm | 2.54 mm |
| Terminal Position | DUAL | DUAL | QUAD | DUAL | DUAL | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | — | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| Factory Lead Time | — | 14 Weeks | 9 Weeks | 6 Weeks | 6 Weeks | 6 Weeks |
| Analog IC - Other Type | — | SWITCHING CONTROLLER | — | — | — | — |
| Control Mode | — | CURRENT-MODE | — | — | — | — |
| Control Technique | — | PULSE WIDTH MODULATION | — | — | — | — |
| Input Voltage-Max | — | 30 V | — | — | — | — |
| Input Voltage-Min | — | 8.2 V | — | — | — | — |
| Input Voltage-Nom | — | 15 V | — | — | — | — |
| JESD-609 Code | — | e3 | e3 | e3 | e3 | e3 |
| Number of Functions | — | 1 | — | — | — | — |
| Output Current-Max | — | 1 A | — | — | — | — |
| Package Equivalence Code | — | DIP8,.3 | LCC32,.2SQ,20 | DIP28,.3 | DIP28,.3 | DIP28,.3 |
| Switcher Configuration | — | SINGLE | — | — | — | — |
| Switching Frequency-Max | — | 500 kHz | — | — | — | — |
| Terminal Finish | — | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) |
| ## UC3845BN Alternates Showing results | — | Image | — | — | — | — |
| Pbfree Code | — | — | Yes | Yes | Yes | Yes |
| Manufacturer Package Code | — | — | VQFN-32 | SPDIP-28 | SPDIP-28 | SPDIP-28 |
| Boundary Scan | — | — | NO | NO | NO | NO |
| CPU Family | — | — | AVR RISC | AVR RISC | AVR RISC | AVR RISC |
| Format | — | — | FIXED POINT | FIXED POINT | FIXED POINT | FIXED POINT |
| Integrated Cache | — | — | NO | NO | NO | NO |
| Low Power Mode | — | — | YES | YES | YES | YES |
| Number of Serial I/Os | — | — | 2 | 1 | 1 | 1 |
| Number of Timers | — | — | 5 | 3 | 3 | 3 |
| On Chip Data RAM Width | — | — | 8 | 8 | 8 | 8 |
| On Chip Program ROM Width | — | — | 16 | 16 | 16 | 16 |
| Peak Reflow Temperature (Cel) | — | — | 260 | — | — | — |
| RAM (bytes) | — | — | 2048 | 2048 | 2048 | 2048 |
| ROM (words) | — | — | 16384 | 16384 | 16384 | 16384 |
| Screening Level | — | — | TS 16949 | — | — | — |
| Supply Current-Max | — | — | 10 mA | 2.7 mA | 12 mA | 2.7 mA |
| ## ATMEGA328PB-MNR Alternates Showing results | — | — | Image | — | — | — |
| Number of External Interrupts | — | — | — | 2 | 2 | 2 |
| RAM (words) | — | — | — | 2048 | 2048 | 2048 |
| ## ATMEGA328P-PU Alternates Showing results | — | — | — | Image | — | — |
| ## ATMEGA328P-PN 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 5 alternatives for ATMEGA328P-20PU — response within 24 hours.
Quick Links
suggested
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PDIP28
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 20MHz, CMOS, PDIP28
Why Look for Alternatives?
Finding alternatives for ATMEGA328P-20PU 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 ATMEGA328P-20PU 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.
Can't Find What You Need?
Our sourcing team can help find compatible alternatives for ATMEGA328P-20PU. Get expert recommendations within 24 hours.
FAQ
What is equivalent to ATMEGA328P-20PU?
Known equivalents for ATMEGA328P-20PU include UC3845BN, ATMEGA328PB-MNR, ATMEGA328P-PU. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of ATMEGA328P-20PU?
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 ATMEGA328P-20PU 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.