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| Part Number | ATXMEGA128B3-MCUR | 
| Datasheet | ATXMEGA128B3-MCUR datasheet | 
| Description | IC MCU 16BIT 128KB FLASH 64VQFN | 
| Manufacturer | Microchip Technology | 
| Series | AVR® XMEGA® B3 | 
| Part Status | Active | 
| Core Processor | AVR | 
| Core Size | 8/16-Bit | 
| Speed | 32MHz | 
| Connectivity | I²C, IrDA, SPI, UART/USART, USB | 
| Peripherals | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT | 
| Number of I/O | 36 | 
| Program Memory Size | 128KB (128K x 8) | 
| Program Memory Type | FLASH | 
| EEPROM Size | 2K x 8 | 
| RAM Size | 8K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 1.6V ~ 3.6V | 
| Data Converters | A/D 8x12b | 
| Oscillator Type | Internal | 
| Operating Temperature | -40°C ~ 85°C (TA) | 
| Package / Case | Surface Mount | 
| Supplier Device Package | 64-VQFN Dual Rows, Exposed Pad | 
| Base Part Number | 64-VQFN (7x7) |