Microchip Technology AT32UC3A3256S-ALUR Microcontrollers
IC MCU 32BIT 256KB FLASH 144LQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
AT32UC3A3256S-ALUR
Base Model
Detailed Description
IC MCU 32BIT 256KB FLASH 144LQFP
Package
144-LQFP
Lifecycle Status
Active
Datasheet
AT32UC3A3256S-ALUR Datasheet
Quick Jump:
Technical Specifications
Microchip Technology AT32UC3A3256S-ALUR Microcontrollers technical specifications.
General
RAM Size
128K x 8
Package / Case
144-LQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.75V ~ 3.6V
Lifecycle Status
Active
Peripherals
Brown-out Detect/Reset, DMA, POR, WDT
Number of I/O
110
Speed
66MHz
Core Processor
AVR
Alternate Parts Comparison (AT32UC3A3256S-ALUR vs AT32UC3B1128-AUT vs AT32UC3C2512C-Z2UR vs AT32UC3B0512-Z2UR)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 144-LQFP | 48-TQFP | 64-VFQFN Exposed Pad | 64-VFQFN Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 1.75V ~ 3.6V | 1.65V ~ 3.6V | 3V ~ 5.5V | 1.65V ~ 3.6V |
| Core Processor | AVR | AVR | AVR | AVR |
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core |
| RAM Size | 128K x 8 | 32K x 8 | 64K x 8 | 96K x 8 |
| Connectivity | EBI/EMI, I²C, IrDA, Memory Card, SPI, SSC, UART/USART, USB OTG | I²C, IrDA, SPI, SSC, UART/USART, USB | CANbus, Ethernet, I²C, IrDA, LINbus, SPI, UART/USART, USB | I²C, IrDA, SPI, SSC, UART/USART, USB |
| Data Converters | A/D 8x10b | A/D 6x10b | A/D 11x12b; D/A 2x12b | A/D 8x10b |
| Number of I/O | 110 | 28 | 45 | 44 |
| Oscillator Type | Internal | Internal | Internal | Internal |
| Peripherals | Brown-out Detect/Reset, DMA, POR, WDT | Brown-out Detect/Reset, DMA, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
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IC MCU 32BIT 1MB FLASH 176LQFP
SPC5643LF2MLQ8NXP SemiconductorsNXP
IC MCU 32BIT 1MB FLASH 144LQFP
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