ATTINY22L-1SC

Overview

The ATtiny22L-1SC 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 internal SRAM, and 128 bytes of EEPROM. The device operates within a voltage range of 2.7V to 6.0V and includes five programmable I/O lines. It utilizes an internal RC oscillator with a nominal frequency of approximately 1MHz at 5.0V. The component is housed in an 8-lead Plastic Gull-Wing Small Outline (EIAJ SOIC) package.

Feature Summary

• Utilizes high-performance low-power AVR RISC architecture with single clock cycle execution for most instructions.
• Includes one 8-bit Timer/Counter with a separate prescaler and a programmable Watchdog Timer with an on-chip oscillator.
• Supports SPI serial interface for in-system programming and data security via flash program lock.
• Offers selectable low-power Idle and Power Down modes to optimize power consumption.

Applications

• Embedded control applications requiring low power consumption
• In-system programming environments using SPI interfaces
• Battery-operated devices utilizing idle and power down modes

Procurement Notes

Verify that the ordering code matches the required speed grade and package type. Confirm the operating temperature range aligns with commercial specifications. Ensure the voltage supply requirements are compatible with the 2.7V to 6.0V operational limits. Check for any specific documentation updates regarding the manufacturer's standard warranty terms.

Selection Notes

Select this component when a cost-effective solution with ISP capabilities is required. Consider the 8-bit processing throughput and memory size for simple embedded tasks. Evaluate the package dimensions against available board space. Review the instruction set efficiency for code density requirements.

Part Context

This part belongs to the ATtiny22/L series of microcontrollers. It shares architectural similarities with other AVR-based devices but offers specific memory configurations and package options. The series is designed for applications balancing performance with power efficiency.

Replacement Considerations

Consult official documentation for cross-references. Verify pin compatibility and electrical characteristics before substitution.

FAQ

What is the function of the RESET pin?

An external reset is generated by a low level on the RESET pin. Reset pulses longer than 50 ns will generate a reset, even if the clock is not running.

How does the ATtiny22L handle interrupts?

It features a flexible interrupt module with control registers in the I/O space. Interrupts have priority according to their vector position in the program memory.