ATMEGA161-8AC Equivalent & Substitute Parts

Part Overview

The ATMEGA161-8AC 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 44-TQFP surface mount package and supports SPI and UART/USART connectivity. The ATMEGA161-8AC is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

ATMEGA161-8AC

Microchip TechnologyIn Stock: 932ATMEGA161-8AC Datasheet

Current PartRFQ

ATMEGA162V-8AU

Microchip TechnologyIn Stock: 5000137ATMEGA162V-8AU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA161-8AC is determined by strict equivalence across the following critical parameters:

• Core Architecture: AVR processor family
• Memory Configuration: 16KB FLASH, 1KB RAM, 512 bytes EEPROM
• I/O Count: 35 I/O pins
• Package: 44-TQFP (10x10) surface mount
• Pin Compatibility: Identical pinout required

The ATMEGA162V-8AU qualifies as a manufacturer-recommended substitute based on matching core memory specifications, I/O pin count, and package form factor. Both devices share the same 44-TQFP package and identical memory architecture, enabling direct functional replacement in applications requiring these specifications.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA162V-8AU is the manufacturer-recommended substitute for the obsolete ATMEGA161-8AC. Both devices share identical core memory architecture, I/O pin configuration, and 44-TQFP package form factor, enabling direct functional replacement.

The ATMEGA162V-8AU offers enhanced product status as an active component with current manufacturing support. This device achieves ROHS3 compliance, whereas the ATMEGA161-8AC is RoHS non-compliant. The substitute part extends operating temperature range to -40°C ~ 85°C compared to the original 0°C ~ 70°C specification, and supports expanded voltage supply range from 1.8V ~ 5.5V versus the original 4V ~ 5.5V.

The ATMEGA162V-8AU includes additional connectivity options (EBI/EMI) and enhanced peripheral features (Brown-out Detect/Reset) not present in the ATMEGA161-8AC. These enhancements provide improved system reliability and regulatory compliance without compromising backward compatibility for core memory and I/O specifications.

Frequently Asked Questions (FAQ)

Q: Can the ATMEGA162V-8AU directly replace the ATMEGA161-8AC in existing designs?

A: Yes. Both devices share identical 44-TQFP package pinout, 16KB FLASH memory, 1KB RAM, 512 bytes EEPROM, and 35 I/O pins. The substitute part maintains functional compatibility for applications requiring these core specifications.

Q: What are the key differences between these parts?

A: The ATMEGA162V-8AU extends voltage supply range (1.8V ~ 5.5V vs. 4V ~ 5.5V), operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C), and adds EBI/EMI connectivity and Brown-out Detect/Reset peripheral features. The substitute achieves ROHS3 compliance and maintains active product status.

Q: Are there packaging differences between the ATMEGA161-8AC and ATMEGA162V-8AU?

A: Both devices use identical 44-TQFP (10x10) surface mount packages. The ATMEGA162V-8AU is supplied in Tray packaging, while the ATMEGA161-8AC packaging specification was not provided.

Q: Is the ATMEGA162V-8AU suitable for applications requiring the original 4V ~ 5.5V supply voltage range?

A: Yes. The ATMEGA162V-8AU supports 1.8V ~ 5.5V supply voltage, which encompasses the original 4V ~ 5.5V specification range. Applications designed for the ATMEGA161-8AC operate within the substitute part's voltage specifications.

Q: What is the availability status of the ATMEGA162V-8AU?

A: The ATMEGA162V-8AU is classified as Active with 5,000,100 pieces in stock. The ATMEGA161-8AC is Obsolete with 920 pieces available.