Microchip Technology ATXMEGA256A3BU-AU Microcontrollers
IC MCU 8/16BIT 256KB FLSH 64TQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATXMEGA256A3BU-AU
Base Model
Detailed Description
IC MCU 8/16BIT 256KB FLSH 64TQFP
Package
64-TQFP
Lifecycle Status
Active
Datasheet
ATXMEGA256A3BU-AU Datasheet
Quick Jump:
Technical Specifications
Microchip Technology ATXMEGA256A3BU-AU Microcontrollers technical specifications.
General
Series
XMEGA A3BU
RAM Size
16K x 8
Data Bus Width
8 bit/16 bit
Maximum Clock Frequency
32 MHz
RoHS
Yes
Package / Case
64-TQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.6V ~ 3.6V
Lifecycle Status
Active
Alternate Parts Comparison (ATXMEGA256A3BU-AU vs ATXMEGA256A3BU vs ATXMEGA256A3U-MN vs ATXMEGA256A3U-AU)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 64-TQFP | -- | 64-VFQFN Exposed Pad | 64-TQFP |
| Mounting Type | Surface Mount | -- | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -- | -40°C ~ 105°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 1.6V ~ 3.6V | -- | 1.6V ~ 3.6V | 1.6V ~ 3.6V |
| Core Processor | AVR | -- | AVR | AVR |
| Core Size | 8/16-Bit | -- | 8/16-Bit | 8/16-Bit |
| RAM Size | 16K x 8 | -- | 16K x 8 | 16K x 8 |
| Connectivity | I²C, IrDA, SPI, UART/USART, USB | -- | I²C, IrDA, SPI, UART/USART, USB | I²C, IrDA, SPI, UART/USART, USB |
| Data Converters | A/D 16x12b; D/A 2x12b | -- | A/D 16x12b; D/A 2x12b | A/D 16x12b; D/A 2x12b |
| EEPROM Size | 4K x 8 | -- | 4K x 8 | 4K x 8 |
| Number of I/O | 47 | -- | 50 | 50 |
| Oscillator Type | Internal | -- | Internal | Internal |
| 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
MC9S12E128MFUENXP SemiconductorsNXP
IC MCU 16BIT 128KB FLASH 80QFP
More Parts in Microcontrollers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
