ATTINY22L-1PI

Overview

The ATtiny22L-1PI is an 8-bit microcontroller based on the AVR RISC architecture, manufactured by Microchip Technology. It features 2K bytes of In-System Programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. The device operates within a voltage range of 2.7V to 6.0V and includes an internal RC oscillator providing approximately 1MHz at 5.0V. It offers five programmable I/O lines, one 8-bit Timer/Counter, and an SPI serial interface for programming. The component is housed in an 8-pin PDIP package and supports industrial operating temperatures from -40°C to 85°C.

Feature Summary

• Utilizes high-performance AVR RISC architecture with single-cycle instruction execution
• Includes non-volatile memory with in-system programmable Flash and EEPROM
• Supports low-power operation through selectable Idle and Power Down modes
• Integrates an SPI serial interface for in-system programming capabilities

Applications

• Embedded control applications requiring low power consumption
• Systems utilizing in-system programming via SPI interface
• Industrial environments requiring extended temperature operation ranges

Procurement Notes

Verify the specific ordering code matches the required package type and temperature grade. Confirm that the industrial variant corresponds to the -1PI suffix for proper environmental ratings. Ensure compatibility with existing development tools and verify current product status before finalizing procurement decisions.

Selection Notes

Select this component when a cost-effective 8-bit solution with ISP capability is required. Consider the limited I/O count and memory size for simpler embedded tasks. Evaluate the internal oscillator accuracy against system timing requirements. Compare power consumption metrics in active versus sleep modes for battery-operated designs.

Part Context

This part belongs to the ATtiny22/L series of low-power CMOS 8-bit microcontrollers. It shares architectural similarities with other AVR devices but is distinguished by its specific memory configuration and package options. The series targets applications needing efficient code execution with minimal peripheral complexity.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio. Verify that substitute parts maintain identical memory sizes and voltage specifications. Ensure replacement components support the same industrial temperature range and packaging style.