ATTINY441-MMHRA0

Overview

The ATTINY441-MMHRA0 is an 8-bit AVR microcontroller featuring a high-performance RISC architecture with up to 16 MIPS throughput at 16 MHz. It includes 4 Kbytes of in-system programmable Flash, 256 bytes of EEPROM, and 256 bytes of SRAM. The device operates within a voltage range of 1.7V to 5.5V and supports clock speeds from 0–2 MHz at 1.7–1.8V up to 0–16 MHz at 4.5–5.5V. It provides 12 programmable I/O lines, two USARTs, SPI, TWI, a 10-bit ADC with multiple channels, and three timer/counters.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for efficient processing.
• Integrated non-volatile memory segments including Flash, EEPROM, and SRAM with data retention capabilities.
• Comprehensive peripheral set including dual full-duplex USARTs, master/slave SPI, slave TWI, and a 10-bit ADC.
• Multiple low-power operating modes such as Idle, ADC Noise Reduction, Standby, and Power-down.

Applications

• Battery-powered embedded systems requiring low active and standby current consumption.
• Industrial control applications utilizing the wide operating temperature range and robust I/O drive.
• Communication interfaces leveraging dual USARTs and start frame detection capabilities.
• Sensor interfacing using the multi-channel 10-bit ADC with differential input support.

Procurement Notes

Verify the specific speed grade suffix (e.g., MMHR) against the required operating frequency and voltage conditions. Confirm package type availability matches the design constraints. Ensure compliance with RoHS directives as indicated in ordering information. Check for any obsolescence notices or lifecycle status updates prior to final procurement decisions.

Selection Notes

Select this component when a balance of moderate program memory and rich peripheral integration is required. Consider the 16 MHz maximum speed for timing-critical tasks. Evaluate power consumption requirements against the available sleep modes. Ensure the 12 I/O lines meet the interface needs without excessive external logic expansion.

Part Context

This part belongs to the ATtiny441/ATtiny841 family of 8-bit AVR microcontrollers manufactured by Microchip Technology. It shares architectural similarities with other AVR devices but offers specific memory sizes and peripheral configurations tailored for compact, cost-sensitive applications. The family emphasizes low power consumption alongside standard industrial communication interfaces.

Replacement Considerations

Direct substitutes include ATtiny441-SSU, ATtiny441-MU, and ATtiny441-MMH depending on the required package and speed grade. Verify pin compatibility and memory specifications when considering cross-family replacements like ATtiny44A variants.