ATTINY45-20XU

Overview

The ATTINY45-20XU is an 8-bit AVR microcontroller featuring a 4K byte In-System Programmable Flash memory, 256 bytes EEPROM, and 256 bytes SRAM. It operates at a maximum clock frequency of 20 MHz with a supply voltage range of 2.7V to 5.5V. The device includes six programmable I/O lines, a 10-bit ADC with four single-ended channels, two high-frequency PWM outputs, and a Universal Serial Interface (USI). It utilizes an 8-lead TSSOP package.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for efficient processing.
• Non-volatile memory with high endurance capabilities for program and data storage.
• Integrated analog-to-digital converter supporting differential inputs and temperature measurement.
• Multiple power-saving modes including Idle, Power-down, and ADC Noise Reduction.

Applications

• Battery-powered embedded systems requiring low power consumption
• Simple control applications utilizing the USI interface
• Sensor interfacing using the integrated ADC

Procurement Notes

Verify the specific ordering suffix 'XU' corresponds to the 8-lead TSSOP package configuration as documented in the official Microchip ATtiny45 datasheet. Confirm that the speed grade matches the required operational frequency and voltage specifications for your application environment.

Selection Notes

Select this component when a compact 8-pin form factor is necessary alongside standard AVR compatibility. Ensure the design accommodates the TSSOP package thermal requirements and verify that the 20 MHz performance meets the system timing constraints without exceeding the specified voltage limits.

Part Context

This part belongs to the ATtiny45 family within the broader ATtiny25/45/85 series of 8-bit AVR microcontrollers. It shares the same core architecture and peripheral set as its variants, differing primarily in memory size and package options. The 'XU' designation specifically identifies the Thin Shrink Small Outline Package variant.

Replacement Considerations

ATtiny45-20PU

FAQ

What package type does the XU suffix indicate?

The XU suffix indicates an 8-lead, 4.4 mm wide Plastic Thin Shrink Small Outline Package (TSSOP).

Does this device support external interrupts?

Yes, the device supports external interrupt sources via the INT0 pin.