ATMEGA8A-PN

Overview

The ATMEGA8A-PN is a low-power CMOS 8-bit microcontroller from Microchip Technology, based on the AVR enhanced RISC architecture. It features an industrial temperature range of -40°C to +105°C and operates at speeds up to 16 MHz with a supply voltage of 2.7V to 5.5V. The device includes 8 KB of In-System Programmable Flash, 512 B EEPROM, and 1 KB SRAM. It utilizes a 28-pin Plastic Dual Inline Package (PDIP) with 23 programmable I/O lines.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput.
• High endurance nonvolatile memory segments with read-while-write capabilities.
• Supports capacitive touch sensing via the QTouch library for buttons, sliders, and wheels.
• Includes multiple peripheral interfaces such as USART, SPI, TWI, and ADC.

Applications

• Industrial embedded control systems
• Computer peripherals
• Consumer electronics

Procurement Notes

Verify the specific ordering code against the manufacturer's current documentation to ensure compatibility with the required package type and speed grade. Confirm that the industrial temperature rating aligns with the operational environment requirements. Check for any updates regarding component lifecycle status or recommended replacements before finalizing procurement plans.

Selection Notes

Select this model when an industrial temperature range extending to +105°C is required alongside a through-hole mounting solution. The PDIP package facilitates prototyping and manual assembly. Ensure the application does not require more than 6 ADC channels, as higher channel counts are available in surface-mount packages.

Part Context

This component belongs to the ATmega8A family within the megaAVR series. It shares core specifications with other variants like the ATMEGA8A-PU but differs in its extended temperature rating and physical packaging. The 'PN' suffix specifically denotes the 28-lead PDIP package configured for industrial operating conditions.

Replacement Considerations

Consult official Microchip documentation for verified substitute part numbers. No specific replacement part numbers are confirmed in the provided source material.