AT32UC3B1256-UAlternatives & Equivalent Parts
About AT32UC3B1256-U
AT32UC3B1256-U 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.
Need pricing on these alternatives?
Get one quote covering all 3 alternatives for AT32UC3B1256-U — response within 24 hours.
Specification Comparison
| Parameter | AT32UC3B1256-USource | AT32UC3B1256-AUT | AT32UC3B164-AUT | AT32UC3B1128-AUT |
|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Microchip | Microchip |
| Package Type | Quad Flat No-Lead | Quad Flat Packages | Quad Flat Packages | Quad Flat Packages |
| Pin Count | 49 | 48 | 48 | 48 |
| Temperature Range | — | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | — | $6.9000 | $4.7300 | $5.3333 |
| Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||
| Pbfree Code | — | Yes | Yes | Yes |
| Manufacturer Package Code | — | TQFP-48 | TQFP-48 | TQFP-48 |
| Factory Lead Time | — | 15 Weeks | 15 Weeks | 15 Weeks |
| YTEOL | — | 14 | 19 | 19 |
| Has ADC | — | YES | YES | YES |
| Additional Feature | — | ALSO REQUIRES 3.3 V I/O SUPPLY | ALSO REQUIRES 3.3 V I/O SUPPLY | ALSO REQUIRES 3.3 V I/O SUPPLY |
| Bit Size | — | 32 | 32 | 32 |
| Boundary Scan | — | NO | YES | YES |
| CPU Family | — | AVR RISC | AVR RISC | AVR RISC |
| Clock Frequency-Max | — | 50 MHz | 50 MHz | 50 MHz |
| DAC Channels | — | NO | NO | NO |
| DMA Channels | — | YES | YES | YES |
| Format | — | FLOATING-POINT | FLOATING-POINT | FLOATING-POINT |
| Integrated Cache | — | YES | YES | YES |
| JESD-30 Code | — | S-PQFP-G48 | S-PQFP-G48 | S-PQFP-G48 |
| JESD-609 Code | — | e3 | e3 | e3 |
| Low Power Mode | — | YES | YES | YES |
| Number of DMA Channels | — | 7 | 7 | 7 |
| Number of External Interrupts | — | 6 | 6 | 6 |
| Number of I/O Lines | — | 28 | 28 | 28 |
| Number of Serial I/Os | — | 28 | 28 | 28 |
| Number of Timers | — | 3 | 3 | 3 |
| On Chip Program ROM Width | — | 8 | 8 | 8 |
| PWM Channels | — | YES | YES | YES |
| Package Body Material | — | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | — | TQFP48,.35SQ | TQFP48,.35SQ | TQFP48,.35SQ |
| Package Shape | — | SQUARE | SQUARE | SQUARE |
| Package Style | — | FLATPACK, THIN PROFILE, FINE PITCH | FLATPACK, THIN PROFILE, FINE PITCH | FLATPACK, THIN PROFILE, FINE PITCH |
| Qualification Status | — | Not Qualified | Not Qualified | Not Qualified |
| RAM (bytes) | — | 32768 | 16384 | 32768 |
| ROM (words) | — | 262144 | 65536 | 131072 |
| ROM Programmability | — | FLASH | FLASH | FLASH |
| Speed | — | 60 MHz | 60 MHz | 60 MHz |
| Supply Voltage-Max | — | 1.95 V | 1.95 V | 1.95 V |
| Supply Voltage-Min | — | 1.8 V | 1.8 V | 1.8 V |
| Supply Voltage-Nom | — | 1.8 V | 1.8 V | 1.8 V |
| Surface Mount | — | YES | YES | YES |
| Technology | — | CMOS | CMOS | CMOS |
| Temperature Grade | — | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | — | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | — | GULL WING | GULL WING | GULL WING |
| Terminal Pitch | — | 0.5 mm | 0.5 mm | 0.5 mm |
| Terminal Position | — | QUAD | QUAD | QUAD |
| uPs/uCs/Peripheral ICs Type | — | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| ## AT32UC3B1256-AUT 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 3 alternatives for AT32UC3B1256-U — response within 24 hours.
Quick Links
RISC Microcontroller, 32-Bit, FLASH, AVR RISC CPU, 60MHz, CMOS, PQFP48
RISC Microcontroller, 32-Bit, FLASH, AVR RISC CPU, 60MHz, CMOS, PQFP48
RISC Microcontroller, 32-Bit, FLASH, AVR RISC CPU, 60MHz, CMOS, PQFP48
Why Look for Alternatives?
Finding alternatives for AT32UC3B1256-U 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 AT32UC3B1256-U 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 AT32UC3B1256-U. Get expert recommendations within 24 hours.
FAQ
What is equivalent to AT32UC3B1256-U?
Known equivalents for AT32UC3B1256-U include AT32UC3B1256-AUT, AT32UC3B164-AUT, AT32UC3B1128-AUT. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of AT32UC3B1256-U?
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 AT32UC3B1256-U 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.