ATTINY24A-MMHR

Overview

The ATTINY24A-MMHR is an 8-bit AVR RISC microcontroller featuring 2KB of in-system programmable Flash memory, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates within a voltage range of 1.8V to 5.5V and supports clock frequencies up to 20MHz. The device includes a 10-bit ADC with eight single-ended channels, two PWM channels, and a Universal Serial Interface (USI). It is housed in a 20-pin WQFN package with an exposed pad and is rated for industrial temperatures from -40°C to +85°C.

Feature Summary

• High-performance 8-bit AVR architecture with most instructions executing in a single clock cycle
• Integrated non-volatile memory segments including Flash, EEPROM, and SRAM with high endurance ratings
• On-chip analog features comprising a 10-bit ADC and an analog comparator
• Comprehensive peripheral set including timers, counters, PWM channels, and USI communication interface

Applications

• Battery-powered consumer electronics requiring low power consumption
• Industrial control systems operating in harsh environments
• Smart home automation devices
• Portable medical instrumentation

Procurement Notes

Verify the specific suffix MMHR against official Microchip documentation to confirm tape-and-reel packaging and temperature grade. Ensure compatibility with existing design-in tools as ATtiny legacy devices may have limited support in modern IDEs. Cross-reference datasheet revisions to confirm pinout and electrical characteristics match current production standards.

Selection Notes

Select this component when a balance of processing power, memory capacity, and I/O count is required in a compact form factor. Consider the 20MHz speed grade if higher throughput is needed compared to lower-speed variants. Evaluate the 1.8V minimum supply voltage for compatibility with single-cell battery applications.

Part Context

This part belongs to the ATtiny family of 8-bit AVR microcontrollers produced by Microchip Technology following its acquisition of Atmel. The ATtiny series is designed for cost-sensitive embedded applications, offering miniaturization and system-level integration. The ATTINY24A variant specifically targets applications needing moderate program memory and analog capabilities.

Replacement Considerations

Direct substitutes include other ATtiny24A variants with different package options such as SOIC or PDIP. Verify that alternative packages maintain the same electrical specifications and pin compatibility if board space allows for redesign.