8-bit AVR microcontroller featuring 256KB FLASH memory and 16KB RAM. Operates at up to 32MHz with a 1.6V to 3.6V supply voltage. Offers 47 I/Os, 22 PWM channels, 16 ADC channels, and multiple communication interfaces including I2C, SPI, USB, IrDA, and UART/USART. Packaged in a 64-pin TQFP for surface mounting, this RoHS compliant component operates from -40°C to 85°C.
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Microchip ATXMEGA256A3BU-AU technical specifications.
| Package/Case | TQFP |
| Core Architecture | AVR |
| Data Bus Width | 8b |
| Frequency | 32MHz |
| Height | 1.05mm |
| Interface | I2C, SPI, USB, IrDA, UART, USART |
| Lead Free | Lead Free |
| Length | 14.1mm |
| Max Frequency | 32MHz |
| Max Operating Temperature | 85°C |
| Max Supply Voltage | 3.6V |
| Memory Size | 256KB |
| Memory Type | FLASH, |
| Min Operating Temperature | -40°C |
| Min Supply Voltage | 1.6V |
| Mount | Surface Mount |
| Number of ADC Channels | 16 |
| Number of I/Os | 47 |
| Number of I2C Channels | 2 |
| Number of PWM Channels | 22 |
| Number of SPI Channels | 8 |
| Number of Timers/Counters | 7 |
| Number of UART Channels | 6 |
| Number of USB Channels | 1 |
| Oscillator Type | Internal |
| Packaging | Tray |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, DMA |
| RAM Size | 16KB |
| Reach SVHC Compliant | No |
| RoHS Compliant | Yes |
| Series | AVR® XMEGA® A3BU |
| Width | 14.1mm |
| RoHS | Compliant |
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