ATMEGA6490-16AI Equivalent & Substitute Parts

Part Overview

The ATMEGA6490-16AI is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 64KB FLASH memory, 4KB RAM, and 2KB EEPROM in a 100-TQFP package. This device operates at 16MHz with a supply voltage range of 2.7V to 5.5V and includes integrated peripherals such as PWM, UART/USART, SPI, and an 8-channel 10-bit analog-to-digital converter.

The ATMEGA6490-16AI is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support legacy system maintenance or redesigns requiring active product alternatives.

Substiute Parts

ATMEGA6490-16AI

Microchip TechnologyIn Stock: 1130ATMEGA6490-16AI Datasheet

Current PartRFQ

ATMEGA6490-16AU

Microchip TechnologyIn Stock: 4523ATMEGA6490-16AU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA6490-16AI is determined by strict equivalence across the following critical parameters:

• Core processor architecture (AVR)
• Core size (8-Bit)
• Operating frequency (16MHz)
• Memory configuration (64KB FLASH, 4KB RAM, 2KB EEPROM)
• I/O count (68 pins)
• Peripheral set (SPI, UART/USART, USI, PWM, ADC, WDT, LCD, Brown-out Detect/Reset, POR)
• Voltage supply range (2.7V ~ 5.5V)
• Package type (100-TQFP, 14x14mm)
• Operating temperature range (-40°C ~ 85°C)

The ATMEGA6490-16AU meets all substitution criteria as a direct functional equivalent with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA6490-16AU is the direct substitute for the ATMEGA6490-16AI. Both parts are electrically and mechanically identical across all functional parameters. The primary distinction is product lifecycle status and regulatory compliance:

The ATMEGA6490-16AI is obsolete and carries RoHS non-compliant status. The ATMEGA6490-16AU is an active product with ROHS3 compliance, making it the appropriate choice for new designs, production continuity, and systems requiring current regulatory alignment. Both parts share identical MSL ratings and REACH status.

For applications currently using the ATMEGA6490-16AI, direct substitution with the ATMEGA6490-16AU requires no design modifications, as pin configuration, electrical characteristics, and functional capabilities are fully equivalent.

Frequently Asked Questions (FAQ)

Q: Can the ATMEGA6490-16AU replace the ATMEGA6490-16AI in existing designs?

A: Yes. The ATMEGA6490-16AU is a direct functional equivalent with identical electrical specifications, pin configuration, memory organization, and peripheral set. No circuit modifications are required.

Q: What is the difference between the ATMEGA6490-16AI and ATMEGA6490-16AU?

A: The primary differences are product status and regulatory compliance. The ATMEGA6490-16AI is obsolete and RoHS non-compliant, while the ATMEGA6490-16AU is an active product with ROHS3 compliance. All functional and electrical parameters are identical.

Q: Are there any packaging differences between these parts?

A: Both parts use the 100-TQFP (14x14mm) package with surface mount mounting type. The ATMEGA6490-16AI is supplied in tube packaging, while the ATMEGA6490-16AU is supplied in tray packaging. The physical component dimensions and pin assignments are identical.

Q: What is the MSL rating for these microcontrollers?

A: Both the ATMEGA6490-16AI and ATMEGA6490-16AU carry an MSL rating of 3 with a floor life of 168 hours. Identical moisture handling and storage requirements apply to both parts.

Q: Are these parts REACH compliant?

A: Both the ATMEGA6490-16AI and ATMEGA6490-16AU are REACH Unaffected, indicating no REACH substance of concern restrictions apply to either part.