ATMEGA162L-8AC Equivalent & Substitute Parts

Part Overview

The ATMEGA162L-8AC is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 16KB FLASH program memory, 1KB RAM, and 512 bytes EEPROM. This device is classified as Obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement. The part operates at 8MHz with a supply voltage range of 2.7V to 5.5V and is housed in a 44-TQFP surface mount package.

Substiute Parts

ATMEGA162L-8AC

Microchip TechnologyIn Stock: 969ATMEGA162L-8AC Datasheet

Current PartRFQ

ATMEGA162V-8AU

Microchip TechnologyIn Stock: 5000137ATMEGA162V-8AU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA162L-8AC 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)
• I/O pin count (35)
• Package form factor (44-TQFP)
• Connectivity interfaces (EBI/EMI, SPI, UART/USART)
• Peripheral feature set (Brown-out Detect/Reset, POR, PWM, WDT)

The ATMEGA162V-8AU meets all these criteria and qualifies as a direct functional equivalent. Substitution is valid when the replacement part maintains identical memory architecture, pin configuration, and peripheral functionality.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA162V-8AU is the appropriate substitute for the obsolete ATMEGA162L-8AC based on the following factors:

Product Status: The ATMEGA162L-8AC is classified as Obsolete, making continued procurement impractical. The ATMEGA162V-8AU maintains Active status with verified availability.

Compliance: The ATMEGA162V-8AU is ROHS3 compliant, whereas the ATMEGA162L-8AC is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulations.

Functional Equivalence: Both parts share identical core architecture, memory configuration, I/O count, and peripheral feature set, ensuring direct functional compatibility at the firmware level.

Operating Envelope: The ATMEGA162V-8AU provides an extended supply voltage range (1.8V to 5.5V versus 2.7V to 5.5V) and wider operating temperature range (-40°C to 85°C versus 0°C to 70°C), offering greater design flexibility for diverse application environments.

Packaging: Both devices use identical 44-TQFP surface mount packaging with matching MSL ratings, eliminating PCB redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the ATMEGA162V-8AU be used as a direct replacement for the ATMEGA162L-8AC without firmware modification?

A: Yes. Both devices implement identical AVR core architecture, instruction set, memory organization, and peripheral interfaces. Firmware compiled for the ATMEGA162L-8AC executes without modification on the ATMEGA162V-8AU.

Q: What are the key differences between these two parts?

A: The primary differences are product status (Obsolete versus Active), RoHS compliance (non-compliant versus ROHS3 compliant), supply voltage range (2.7V–5.5V versus 1.8V–5.5V), and operating temperature range (0°C–70°C versus -40°C–85°C). Functional specifications remain identical.

Q: Are there any PCB layout or schematic changes required when substituting the ATMEGA162V-8AU?

A: No. Both parts use the 44-TQFP package with identical pinout, MSL rating, and mounting type. Existing PCB designs and schematics require no modification.

Q: Does the extended operating temperature range of the ATMEGA162V-8AU affect its use in standard industrial applications?

A: The extended temperature range (-40°C to 85°C) of the ATMEGA162V-8AU provides additional operational margin compared to the ATMEGA162L-8AC (0°C to 70°C). This does not negatively impact standard applications; it expands the device's suitability to wider environmental conditions.

Q: Is the lower minimum supply voltage (1.8V) of the ATMEGA162V-8AU compatible with existing 2.7V minimum designs?

A: Yes. The ATMEGA162V-8AU operates across the full 1.8V to 5.5V range, which encompasses the 2.7V to 5.5V range of the ATMEGA162L-8AC. Existing power supply designs remain fully compatible.

Q: What is the significance of ROHS3 compliance for the ATMEGA162V-8AU?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive, restricting specific hazardous materials in electrical and electronic equipment. This is mandatory for products sold in the European Union and increasingly required by global supply chain standards.