ATTINY12-8PI

Overview

The ATTINY12-8PI is an 8-bit AVR microcontroller featuring 1K byte of Flash program memory and 64 bytes of EEPROM. It operates at speeds up to 8 MHz with a supply voltage range of 4.0V to 5.5V. The device includes an internal calibrated RC oscillator, a programmable watchdog timer, and an analog comparator. It provides six general-purpose I/O lines and supports in-system programming via SPI. The component is housed in an 8-pin PDIP package.

Feature Summary

• AVR RISC architecture delivering high performance with most instructions executing in a single clock cycle
• Nonvolatile memory including 1K byte Flash and 64 byte EEPROM for data retention
• Integrated peripherals such as an 8-bit timer/counter, analog comparator, and programmable watchdog timer
• Low-power operation with selectable idle and power-down modes

Applications

• Embedded control applications requiring low-cost 8-bit processing
• Battery-powered devices utilizing low-power sleep modes
• Simple sensor interfaces using the analog comparator and pin change interrupts
• General-purpose logic replacement or state machine implementation

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors. Confirm that the specific ordering code matches the required speed grade and package type. Check for end-of-life status as this part may be discontinued. Ensure compliance with relevant environmental directives applicable to your region before procurement.

Selection Notes

Select this component when a small footprint and minimal peripheral set are sufficient. The ATTINY12-8PI suits designs needing basic I/O expansion or simple timing functions without complex communication interfaces. Consider the limited RAM and lack of hardware UART if more advanced data handling is required. Evaluate power consumption requirements against the available sleep modes.

Part Context

This device belongs to the ATtiny family of 8-bit microcontrollers based on the AVR core. It shares architectural similarities with the ATtiny11 but adds EEPROM and SPI capabilities. The series targets cost-sensitive embedded markets where code efficiency and low power consumption are prioritized over high-speed processing or extensive connectivity.

Replacement Considerations

Direct substitutes include other ATtiny12 variants with different speed grades or packages, such as ATTINY12-8PU or ATTINY12-8SI. Cross-family replacements like the ATTINY24A offer increased memory but require schematic and software adjustments due to pinout differences.