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Product Detailed Parameters
- Description：IC MCU 8/16BIT 64KB FLASH 64QFN
- Series：AVR® XMEGA® B3
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- 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：64KB (32K x 16)
- Program Memory Type：FLASH
- EEPROM Size：2K x 8
- RAM Size：4K x 8
- Voltage - Supply (Vcc/Vdd)：1.6V ~ 3.6V
- Data Converters：A/D 8x12b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：64-QFN (9x9)
- Package / Case：64-VFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The ATXMEGA64B3-MNR is an 8/16-bit AVR XMEGA B3 microcontroller featuring 64KB of in-system self-programmable flash, 2KB EEPROM, and 4KB SRAM. It operates at frequencies up to 32MHz from a 2.7V supply or 12MHz from 1.6V within a 1.6V to 3.6V range. The device includes a two-channel DMA controller, four-channel event system, one USB 2.0 full-speed interface, one USART with IrDA support, AES/DES crypto engine, and an eight-channel 12-bit ADC. It utilizes a 64-pad QFN package.
Feature Summary
- Supports capacitive touch sensing via the QTouch library for buttons, sliders, and wheels
- Includes a Liquid Crystal Display controller supporting up to 4x25 segment drivers with built-in contrast control
- Features a two-pin Program and Debug Interface (PDI) alongside IEEE 1149.1 compliant JTAG
- Provides five software-selectable power-saving modes including extended standby
Applications
- Industrial control and factory automation
- Building control and HVAC systems
- Utility metering with RF and ZigBee connectivity
- Medical applications and white goods
- Power tools and optical devices
Procurement Notes
Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature rating. Confirm current availability status as product lifecycles may change. Ensure compatibility with existing PCB footprints for the designated package variant before procurement.
Selection Notes
Select this component for applications requiring high performance combined with low power consumption. The architecture allows optimization of power versus processing speed. Consider the integrated LCD driver and USB capabilities if peripheral integration is required without external components.
Part Context
This device belongs to the Atmel AVR XMEGA B3 family, designed using picoPower technology. The family offers large memory ranges with low sleep currents and fast wake-up times. It targets battery-powered applications needing significant memory while maintaining efficiency comparable to smaller MCUs.
Replacement Considerations
Consult official datasheets for cross-referencing. Verify pinout and electrical specifications against alternatives such as other XMEGA B3 variants or A-series devices.
