ATTINY28L-4MU

Overview

The ATTINY28L-4MU is an 8-bit AVR microcontroller featuring a 2 KB Flash program memory and 11 I/O lines. It operates within a voltage range of 2.7 V to 5.5 V and supports a maximum clock frequency of 4 MHz. The device utilizes a TQFP-32 surface-mount package and functions across an industrial temperature range from -40°C to +85°C.

Feature Summary

• AVR RISC architecture with single-cycle instruction execution
• System-in-programmable non-volatile Flash memory
• Industrial-grade wide operating temperature capability

Applications

• Low-pin-count embedded control systems
• Battery-powered devices requiring minimal I/O
• General-purpose logic replacement in compact designs

Procurement Notes

Verify the specific suffix 'MU' against official Microchip documentation to confirm the exact package type, as distributor listings may contain inconsistencies regarding the physical footprint. Ensure the component meets RoHS compliance requirements for your target assembly process.

Selection Notes

Select this model when a balance of moderate processing speed and low pin count is required. It serves as a suitable alternative to legacy ATtiny variants where a 32-pin form factor provides necessary routing space without excessive board area consumption.

Part Context

This component belongs to the ATtiny28L series, designed for cost-sensitive applications. It represents a transition point in Atmel's portfolio following the company's acquisition by Microchip Technology, maintaining compatibility with standard AVR development tools while offering updated manufacturing standards.

Replacement Considerations

Consult official substitution guides for equivalent packages or speed grades. Verify that any cross-reference maintains the same 32-pin configuration and voltage specifications.