ATMEGA16L-8AI Equivalent & Substitute Parts

Part Overview

The ATMEGA16L-8AI is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 16KB FLASH program memory, 1KB RAM, and 512 bytes EEPROM. This device operates at 8MHz with a supply voltage range of 2.7V to 5.5V and is housed in a 44-TQFP package. The ATMEGA16L-8AI is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

ATMEGA16L-8AI

Microchip TechnologyIn Stock: 1923ATMEGA16L-8AI Datasheet

Current PartRFQ

ATMEGA16L-8AU

Microchip TechnologyIn Stock: 24747ATMEGA16L-8AU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA16L-8AI is determined by strict equivalence across the following critical parameters:

• Core processor architecture (AVR)
• Core size (8-Bit)
• Operating frequency (8MHz)
• Program memory capacity and type (16KB FLASH)
• EEPROM and RAM specifications (512 x 8 and 1K x 8 respectively)
• Supply voltage range (2.7V ~ 5.5V)
• I/O count (32 pins)
• Peripheral feature set (I2C, SPI, UART/USART, Brown-out Detect/Reset, POR, PWM, WDT)
• Package form factor (44-TQFP)
• Operating temperature range (-40°C ~ 85°C)

The ATMEGA16L-8AU meets all these criteria and is identified as a direct substitute. Differences in packaging format (Tray vs. unspecified for main part) and product status do not affect functional or electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA16L-8AU is the direct functional equivalent of the ATMEGA16L-8AI. Both devices share identical electrical specifications, memory configurations, peripheral sets, and package geometry. Selection between these parts should be based on the following factors:

Product Status: The ATMEGA16L-8AI is obsolete, while the ATMEGA16L-8AU is active. For new designs or production continuity, the ATMEGA16L-8AU is the appropriate choice.

Compliance Requirements: The ATMEGA16L-8AU is ROHS3 compliant, whereas the ATMEGA16L-8AI is RoHS non-compliant. Applications subject to RoHS regulations must use the ATMEGA16L-8AU.

Availability: The ATMEGA16L-8AU has significantly higher inventory availability (24,733 units) compared to the ATMEGA16L-8AI (1,900 units), supporting production scalability and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can the ATMEGA16L-8AU be used as a direct replacement for the ATMEGA16L-8AI in existing designs?

A: Yes. Both devices are electrically and functionally identical across all specified parameters. No circuit modifications are required. The 44-TQFP package geometry is identical, permitting direct PCB substitution.

Q: What is the difference between the ATMEGA16L-8AI and ATMEGA16L-8AU?

A: The primary differences are product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), packaging format (unspecified vs. Tray), and inventory availability. Electrical and functional specifications are identical.

Q: Are there any compatibility concerns with the 44-TQFP package?

A: No. Both parts use the identical 44-TQFP (10x10) package. Pin assignments, electrical characteristics, and thermal properties are equivalent. PCB layouts and assembly processes require no modification.

Q: Why is the ATMEGA16L-8AI listed as obsolete?

A: The ATMEGA16L-8AI has been superseded by the ATMEGA16L-8AU in Microchip Technology's product portfolio. The ATMEGA16L-8AU is the active production equivalent and is recommended for all new applications.

Q: Does RoHS compliance affect functional performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance or functionality. Both parts operate identically within their specified parameters.