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Product Detailed Parameters
- Description：IC MCU 8/16BIT 64KB FLASH 64QFN
- Series：AVR® XMEGA® B3
- Mfr：Microchip Technology
- Package：Tray
- 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 ~ 85°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-MH is an 8/16-bit AVR XMEGA B3 microcontroller featuring 64KB of in-system self-programmable flash, 2KB EEPROM, and 4KB internal SRAM. It operates at a maximum frequency of 32MHz with a supply voltage range of 1.6V to 3.6V. The device includes a two-channel DMA controller, four-channel event system, one USB device interface, one USART, one TWI, one SPI, AES/DES crypto engine, and an 8-channel 12-bit ADC. It provides 36 programmable I/O pins and is housed in a 64-pad QFN package.
Feature Summary
- Integrates a high-performance AVR RISC CPU with single-cycle execution capabilities.
- Includes a full-speed USB 2.0 interface compliant with low and full speed device standards.
- Features advanced waveform extensions and split mode on timer/counters for precise control applications.
- Supports capacitive touch sensing through the integrated QTouch library.
Applications
- Industrial control systems
- Factory automation equipment
- Building and climate control units
- Utility metering devices
Procurement Notes
Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches the 64-pad QFN requirement. Ensure compatibility with existing firmware development tools and programming interfaces such as PDI or JTAG before integration into production designs.
Selection Notes
Select this model when specific memory capacities of 64KB flash and 4KB SRAM are required within the XMEGA B3 family. Consider the 64-pad QFN package constraints for PCB layout. Evaluate peripheral needs against the available USB, USART, and ADC channels to ensure sufficient interface support for the target application architecture.
Part Context
This component belongs to the Microchip AVR XMEGA B3 series, designed for low-power, high-performance embedded applications. The series utilizes picoPower technology to maintain consistent power characteristics across varying memory sizes. It supports extensive peripheral integration including LCD drivers and cryptographic engines for secure data processing.
Replacement Considerations
ATXMEGA64B3-MHR serves as a tape and reel alternative offering identical electrical and functional specifications within the same package configuration.
