ATTINY44-20MUR

Overview

The ATtiny44-20MUR is an 8-bit AVR microcontroller featuring a high-performance, low-power RISC architecture with 120 instructions. It includes 4KB of in-system programmable Flash, 256 bytes of EEPROM, and 256 bytes of SRAM. The device operates at speeds up to 20 MHz with supply voltages ranging from 2.7V to 5.5V. Key peripherals include two 8-bit timers/counters with PWM channels, a 10-bit ADC with multiple input channels, and a USI for serial communication. It supports debugWIRE and offers various low-power sleep modes.

Feature Summary

• Advanced RISC architecture enabling single-clock-cycle instruction execution for efficient processing.
• Integrated non-volatile memory system with high endurance for program and data storage.
• Versatile analog subsystem including a 10-bit ADC and on-chip temperature sensor.
• Comprehensive peripheral set with timer/counters, PWM outputs, and serial interfaces.

Applications

• Battery-powered embedded systems requiring low power consumption
• Simple serial communication interfaces using USI protocol
• Sensor interfacing applications utilizing the internal ADC
• General-purpose digital control tasks in consumer electronics

Procurement Notes

Verify the specific suffix 'MUR' against official Microchip documentation to confirm package type and temperature range, as standard datasheets may list 'PU' or 'SSU'. Ensure the ordering part number matches the exact speed grade and voltage variant required for your design. Cross-reference with the manufacturer's current product status to confirm availability and lifecycle stage before finalizing procurement plans.

Selection Notes

Select this component when a balance of moderate flash memory and low pin count is needed for cost-sensitive designs. Consider the 20 MHz speed rating relative to the operating voltage to ensure timing requirements are met. Evaluate the available I/O pins against interface needs, noting the shared functionality of pins with analog inputs and serial clocks.

Part Context

The ATtiny44 belongs to the Atmel AVR 8-bit microcontroller family, known for combining processing power with energy efficiency. This series targets applications where code size and power usage are critical constraints. The device leverages the mature AVR core architecture, providing developers with a robust ecosystem of tools and libraries for rapid prototyping and deployment.

Replacement Considerations

Check for ATtiny44A variants which may offer updated manufacturing processes or extended temperature ranges. Verify pin compatibility if substituting with other members of the ATtiny4x family, such as the ATtiny441, noting differences in peripheral features like ADC resolution and timer configurations.