ATTINY28L-4AUR

Overview

The ATTINY28L-4AUR is an 8-bit microcontroller based on the AVR RISC architecture, manufactured by Microchip Technology. It features 2K bytes of Flash program memory and operates at a maximum clock frequency of 4 MHz. The device supports a supply voltage range of 2.7V to 5.5V and includes 11 programmable I/O lines. It utilizes a 32 x 8 general-purpose working register set for efficient single-clock-cycle execution.

Feature Summary

• Utilizes high-performance low-power AVR RISC architecture with up to 4 MIPS throughput at 4 MHz
• Includes built-in high-current LED driver with programmable modulation capabilities
• Features interrupt and wake-up functionality triggered by low-level input signals
• Integrates an on-chip analog comparator and a programmable watchdog timer

Applications

• Embedded control applications requiring low power consumption
• Systems utilizing the high-current LED driver for display or indicator functions
• Industrial environments operating within the specified industrial temperature range

Procurement Notes

Verify that the specific ordering code matches the required speed grade and package type. Confirm the operational temperature range aligns with system requirements. Ensure compatibility with existing development tools such as macro assemblers or in-circuit emulators. Check for any specific packaging constraints or handling instructions related to the MLF or TQFP variants.

Selection Notes

Select this component when a cost-effective solution with moderate processing speed is needed. Consider the 2.7V minimum supply voltage requirement compared to lower-voltage alternatives. Evaluate the need for the specific LED driver feature versus standard GPIO usage. Review the available packages (TQFP, MLF) against board space limitations.

Part Context

This part belongs to the ATtiny28 family, which combines an enhanced RISC 8-bit CPU with nonvolatile Flash memory. The series is designed to optimize power consumption versus processing speed. It is supported by a full suite of program and system development tools including debuggers and simulators.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.