ATTINY12-8SI

Overview

The ATTINY12-8SI is an industrial-grade, 8-bit AVR microcontroller manufactured by Microchip Technology. It features a 1K byte Flash program memory and 64 bytes of in-system programmable EEPROM data memory. The device operates within a voltage range of 4.0V to 5.5V with a maximum clock frequency of 8 MHz. It utilizes the high-performance AVR RISC architecture, executing most instructions in a single clock cycle. The component is housed in an 8-lead SOIC package and supports operation across the industrial temperature range of -40°C to +85°C.

Feature Summary

• AVR RISC Architecture: Executes powerful instructions in a single clock cycle for efficient processing.
• Nonvolatile Memory: Includes 1K byte Flash and 64 bytes EEPROM with programming lock security.
• Peripheral Integration: Features an 8-bit Timer/Counter, on-chip Analog Comparator, and Programmable Watchdog Timer.
• Low-Power Operation: Supports Idle and Power-down modes with wake-up capabilities via pin change or interrupts.

Applications

• Embedded control systems requiring low power consumption
• Industrial applications operating in extreme temperatures
• Battery-powered devices utilizing sleep modes
• Simple sensor interfaces using analog comparator

Procurement Notes

Verify that the specific ordering code matches the required speed grade (8 MHz) and voltage range (4.0V - 5.5V). Confirm the package type corresponds to the 8-lead SOIC format. Ensure the industrial temperature rating (-40°C to +85°C) aligns with system requirements. Check for RoHS compliance status if environmental regulations apply to the deployment environment.

Selection Notes

Select this component when a cost-effective, low-pin-count solution is needed for basic logic and timing tasks. It is suitable for designs where external crystal oscillators are unnecessary due to the internal RC oscillator. Consider the limited I/O count and lack of ADC compared to newer ATtiny series variants. Evaluate the trade-off between the older architecture and available modern alternatives for new designs.

Part Context

This device belongs to the legacy ATtiny11/12 family based on the classic AVR core. It represents an early iteration of Microchip's 8-bit MCU portfolio, preceding the introduction of enhanced peripherals found in later series like the ATtinyX61A. The product line has been superseded by newer architectures offering higher performance and additional integrated features.

Replacement Considerations

Public documentation explicitly states that the ATtiny11/12 series is not recommended for new designs. Engineers should evaluate newer Microchip AVR counterparts such as the ATtiny series with enhanced peripherals. Verify pin compatibility and software migration efforts before transitioning to alternative components.