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Product Detailed Parameters
- Description：32KB, 4KB SRAM, 24MHZ, USB, 10B
- Series：AVR® DU
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：AVR
- Core Size：8-Bit
- Speed：24MHz
- Connectivity：I2C, IrDA, SMBus, SPI, UART/USART, USB
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：24
- Program Memory Size：32KB (32K x 8)
- Program Memory Type：FLASH
- EEPROM Size：256 x 8
- RAM Size：4K x 8
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 5.5V
- Data Converters：A/D 21x10b
- Oscillator Type：External, Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：32-VQFN (5x5)
- Package / Case：32-VFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The AVR32DU32T-I/RXB is an 8-bit microcontroller from the AVR DU family, featuring a 24 MHz CPU with hardware multiplier. It includes 32 KB of Flash memory with read-while-write capability, 4 KB of SRAM, and 256 bytes of EEPROM. The device operates within a voltage range of 1.8 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. Key peripherals include a USB 2.0 full-speed interface, two USARTs, one SPI, one TWI/I2C, a 10-bit ADC with 21 channels, and an analog comparator. It is housed in a 32-pin VQFN package.
Feature Summary
- Integrates a USB 2.0 full-speed device interface for crystal-less operation via oscillator tuning.
- Provides Program and Debug Interface Disable (PDID) for secure firmware protection against unauthorized access.
- Features an Event System for predictable inter-peripheral signaling independent of the CPU.
- Includes Configurable Custom Logic (CCL) with four Look-up Tables for flexible digital logic implementation.
Applications
- USB-enabled embedded control systems
- Industrial monitoring devices requiring secure firmware updates
- Low-power sensor interfaces with event-driven processing
Procurement Notes
Verify the component matches the preliminary datasheet DS40002576A specifications. Confirm the RXB suffix indicates the 32-pin VQFN package and T suffix denotes tape and reel packaging. Ensure the I suffix corresponds to the industrial temperature range of -40°C to +85°C before finalizing procurement.
Selection Notes
Select this model when a compact 32-pin solution with integrated USB functionality is required. It is suitable for applications needing secure code storage via PDID and flexible peripheral interconnection through the Event System. Consider vertical migration within the AVR DU family if future pin compatibility or memory scaling is needed without code modification.
Part Context
This part belongs to the AVR DU family, which utilizes the AVR CPU architecture optimized for efficiency. The family offers horizontal and vertical migration paths across different pin counts and memory sizes while maintaining feature compatibility. The AVR32DU32 specifically targets applications balancing moderate program memory with extensive I/O and communication capabilities.
FAQ
Can the USB interface operate without an external crystal?
Yes, the internal high-frequency oscillator can be tuned to the USB Start-of-Frames to enable crystal-less operation, provided the supply voltage is above 3.0V.
What security mechanism prevents unauthorized programming?
The Program and Debug Interface Disable (PDID) feature prevents UPDI access to reprogrammable Flash memory after activation, protecting against remote attacks.
