ATMEGA808-XFR

Microcontrollers Overview

The ATMEGA808-XFR is an 8-bit microcontroller from the megaAVR® 0-series, featuring a hardware multiplier and operation up to 20 MHz. It includes 8 KB of Flash memory, 1 KB of SRAM, and 256 bytes of EEPROM. The device utilizes a 28-pin SSOP package with an extended temperature range of -40°C to +125°C. Supply voltage ranges from 1.8 V to 5.5 V. Key peripherals include one 16-bit Timer/Counter Type A (TCA), three 16-bit Timer/Counters Type B (TCB), one Real-Time Counter (RTC), three USARTs, one SPI, and one TWI interface.

Microcontrollers Feature Summary

• Supports vertical migration within the megaAVR 0-series without code modification due to full pin and feature compatibility.
• Integrates an Event System for core-independent inter-peripheral signaling and SleepWalking capabilities for low-power wake-up.
• Features a single-pin Unified Program Debug Interface (UPDI) for programming and debugging.
• Includes Configurable Custom Logic (CCL) with programmable Look-up Tables (LUTs) for custom logic implementation.

Microcontrollers Applications

• Industrial control systems requiring extended temperature operation
• Battery-powered devices utilizing SleepWalking features
• Embedded applications needing multiple communication interfaces

Microcontrollers Procurement Notes

Verify the ordering suffix 'X' confirms the 28-pin SSOP package and 'F' indicates the -40°C to +125°C extended temperature range. Confirm the 'R' suffix denotes tape and reel packaging. Ensure the specific revision matches the required datasheet version DS40002172C. Cross-reference the manufacturer part number with official Microchip documentation to validate component authenticity and specifications.

Microcontrollers Selection Notes

Select this model when an 8 KB Flash size is sufficient for the application requirements. Choose the SSOP package if board space constraints favor surface-mount technology over QFN or TQFP options. The extended temperature rating makes it suitable for harsh environments where standard industrial ratings are insufficient. Verify that the 23 available I/O pins meet the system's connectivity needs.

Microcontrollers Part Context

This component belongs to the megaAVR® 0-series family, which offers scalable memory options ranging from 8 KB to 48 KB across various pin counts. The series emphasizes low power consumption and advanced peripheral integration. The ATmega808 variant specifically provides a balance of processing capability and memory for compact embedded designs.

Microcontrollers Replacement Considerations

ATMEGA808-AFR

Microcontrollers FAQ

What is the maximum operating frequency of the ATMEGA808-XFR?

The device supports a maximum clock frequency of 20 MHz.

Does the ATMEGA808 support simultaneous host and client operations on its TWI interface?

Yes, the TWI interface can operate as both a host and a client simultaneously on different pins.

How many 16-bit Timer/Counters Type B (TCB) are included in the ATmega808?

The ATmega808 includes three 16-bit Timer/Counters Type B (TCB).