ATTINY28L-4PU

Overview

The ATTINY28L-4PU is an 8-bit AVR microcontroller manufactured by Microchip Technology, housed in a 28-lead PDIP package. It features 2K bytes of Flash program memory and operates at speeds up to 4 MHz with a supply voltage range of 2.7V to 5.5V. The device includes 11 programmable I/O lines, an 8-bit timer/counter, an on-chip analog comparator, and a built-in high-current LED driver. It supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Utilizes the AVR RISC architecture for high-performance, low-power processing with most instructions executing in a single clock cycle.
• Integrates a built-in high-current LED driver with programmable modulation capabilities for direct display control.
• Offers multiple power-saving modes including Idle and Power-down to optimize energy consumption in battery-operated applications.

Applications

• Battery-powered embedded control systems requiring low standby current
• Simple LED display interfaces utilizing the integrated high-current driver
• Industrial monitoring devices operating within extended temperature ranges

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the 28-lead PDIP configuration. Confirm that the 2.7V minimum supply voltage aligns with the target system's power rails before finalizing procurement decisions.

Selection Notes

Select this component when a cost-effective 8-bit solution with integrated LED driving is required. It is suitable for designs needing minimal external components due to the onboard oscillator and comparator. Consider the 4 MHz speed limit and 2K Flash capacity for simpler logic tasks where higher performance is unnecessary.

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 for highly flexible and cost-effective embedded control applications. It utilizes Atmel's high-density nonvolatile memory technology to provide a monolithic solution for various consumer and industrial uses.

Replacement Considerations

ATtiny28L-4PC (TQFP Package)

FAQ

What is the maximum operating frequency for the ATTINY28L-4PU?

The maximum operating frequency for the ATTINY28L-4PU is 4 MHz.

Does the ATTINY28L-4PU include an analog-to-digital converter?

No, the datasheet does not list an ADC; it includes an on-chip analog comparator instead.