ATTINY28V-1AI

Overview

The ATTINY28V-1AI is an industrial-grade, low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. It features 2K bytes of Flash program memory and operates at speeds up to 1.2 MHz with a supply voltage range of 1.8V to 5.5V. The device includes 11 programmable I/O lines, one 8-bit Timer/Counter, an on-chip analog comparator, and a built-in high-current LED driver. It supports two software-selectable power-saving modes: Idle and Power-down.

Feature Summary

• AVR RISC Architecture with 32 general-purpose working registers
• Built-in high-current LED driver with programmable modulation
• On-chip Analog Comparator for signal processing
• Programmable Watchdog Timer with internal oscillator

Applications

• Battery-powered embedded control systems
• Low-power sensor interfaces
• LED lighting control applications
• Industrial monitoring devices

Procurement Notes

Verify that the specific part number matches the required speed grade (1.2 MHz) and operating temperature range (-40°C to 85°C). Confirm package availability as the component may be discontinued or subject to long lead times depending on current production status. Ensure compatibility with existing design constraints regarding the 1.8V to 5.5V supply voltage.

Selection Notes

Select this component for designs requiring low power consumption in both active and sleep modes. The 1.2 MHz speed grade is suitable for simple control tasks where energy efficiency is critical. Consider the available I/O lines and the specific need for the integrated LED driver when evaluating alternative microcontrollers within the ATtiny family.

Part Context

This device belongs to the ATtiny28L/V series manufactured by Microchip Technology (formerly Atmel). It utilizes the enhanced AVR core to provide code efficiency and throughput approaching 1 MIPS per MHz. The 'V' suffix indicates the 1.8V minimum operating voltage variant, while 'AI' denotes the industrial temperature range and specific package configuration.

Replacement Considerations

Compatible substitutes include other members of the ATtiny28 family such as the ATTINY28L-1AI for higher speed operation or ATTINY28V-1PU for different packaging options. Verify pinout and feature parity before substitution.