AVR32DU14T-I/SL

Overview

The AVR32DU14T-I/SL is an 8-bit microcontroller from the AVR DU family, featuring a hardware multiplier and clock speeds up to 24 MHz. It includes 32 KB of in-system self-programmable Flash memory with read-while-write capability, 4 KB of SRAM, and 256 bytes of EEPROM. The device operates within a supply 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 device interface, two USARTs, one SPI, one TWI/I2C, a 10-bit ADC, and Configurable Custom Logic (CCL). It utilizes a single-pin Unified Program and Debug Interface (UPDI) for programming and debugging.

Feature Summary

• Integrates a USB 2.0 full-speed device interface compliant with USB specifications, supporting multipacket transfers and crystal-less operation via oscillator tuning.
• Features a flexible Event System that enables CPU-independent inter-peripheral signaling for predictable system timing.
• Includes Program and Debug Interface Disable (PDID) security mechanisms to prevent unauthorized access to reprogrammable Flash memory over UPDI.
• Provides Configurable Custom Logic (CCL) with programmable Look-up Tables (LUTs) for custom digital logic implementation without software intervention.

Applications

• USB-enabled consumer electronics
• Industrial communication nodes
• Smart sensor interfaces
• Low-power embedded control systems

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type, temperature grade, and carrier configuration. Ensure compatibility with existing design constraints regarding pinout and peripheral availability. Cross-reference the datasheet revision to confirm feature sets and electrical characteristics match project requirements before finalizing procurement.

Selection Notes

Select this component when a compact 14-pin solution with integrated USB connectivity is required. It is suitable for applications needing moderate Flash capacity and robust analog peripherals like the 10-bit ADC. Consider the AVR DU family's vertical migration path if future scalability to higher pin counts or memory sizes is anticipated without code modification.

Part Context

This part belongs to the AVR DU family, which shares architectural similarities with other AVR microcontrollers but introduces advanced features like the Event System and CCL. The 'DU' designation indicates the specific generation, while '32' denotes the 32 KB Flash size. The 'T' suffix specifies tape and reel packaging, and 'I/SL' indicates the industrial temperature range and SOIC package style.

Replacement Considerations

AVR16DU14T-I/SL offers similar functionality with reduced Flash memory. AVR64DU14T-I/SL provides increased Flash capacity within the same package. For non-USB variants, consider AVR32DA series devices, though pinouts and peripheral configurations differ significantly.