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Product Detailed Parameters
- Description：IC MCU 8/16BIT 64KB FLASH 64QFN
- Series：AVR® XMEGA® B3
- Mfr：Atmel
- Package：Bulk
- 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 microcontroller from the AVR XMEGA B3 series, manufactured by Microchip Technology. It features a 32 MHz internal oscillator and 64 KB of flash memory with 4 KB SRAM and 2 KB EEPROM. The device operates within a voltage range of 1.6 V to 3.6 V and supports interfaces including I2C, SPI, USART, USB, and IrDA. It includes eight 12-bit ADC channels and peripherals such as DMA, LCD controller, and PWM. The component is housed in a 64-QFN (9x9 mm) surface-mount package and functions across a temperature range of -40°C to +85°C.
Feature Summary
- Integrates an LCD controller for direct display driving, reducing system complexity and PCB design requirements.
- Includes a high-speed USB interface compatible with low-speed and full-speed modes for data communication.
- Features an event system allowing peripheral-to-peripheral communication without CPU intervention for reduced latency.
- Supports multiple sleep modes to minimize power consumption during idle periods.
Applications
- Smart metering systems requiring precise analog signal acquisition.
- Home automation devices with user interface displays.
- Industrial control applications needing robust communication protocols.
- Battery-powered handheld equipment utilizing low-power operation modes.
Procurement Notes
Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Confirm current production status as availability may vary. Ensure compatibility with existing firmware architectures when integrating into designs. Check for any recent product change notices regarding packaging or material composition updates.
Selection Notes
Select this component for designs requiring integrated LCD driving capabilities alongside USB connectivity. Consider the 1.6V to 3.6V operating range for battery-powered applications. Evaluate the 32 MHz performance against processing requirements. Compare pin counts and peripheral sets with other XMEGA B3 variants to ensure optimal resource utilization for the specific application needs.
Part Context
This microcontroller belongs to the AVR XMEGA B3 family, which emphasizes low power consumption and high integration. The series combines standard AVR RISC core performance with specialized peripherals like LCD controllers and USB. It targets applications demanding efficient power management and compact form factors. The B3 series represents a specific iteration within the broader XMEGA portfolio designed for cost-sensitive embedded solutions.
Replacement Considerations
Consult Microchip documentation for officially confirmed substitute part numbers. Verify pinout and register compatibility before substitution. Ensure alternative components meet the same electrical and environmental specifications.
