ATMEGA162V-1AC Equivalent & Substitute Parts

Part Overview

The ATMEGA162V-1AC 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 1MHz with a supply voltage range of 1.8V to 3.6V and is housed in a 44-TQFP package. The part is classified as obsolete, making identification of suitable substitutes necessary for ongoing design support and production continuity.

Substiute Parts

ATMEGA162V-1AC

Microchip TechnologyIn Stock: 1032ATMEGA162V-1AC Datasheet

Current PartRFQ

ATMEGA162V-8AU

Microchip TechnologyIn Stock: 5000137ATMEGA162V-8AU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA162V-1AC is determined by the following critical parameters:

Core Architecture Compatibility: Both the main part and substitute must share the same AVR core processor and 8-bit architecture to ensure instruction set compatibility and firmware portability.

Memory Configuration: Program memory (16KB FLASH), RAM (1K x 8), and EEPROM (512 x 8) must be identical to maintain software compatibility without modification.

Package and Pinout: The 44-TQFP (10x10) package and 35 I/O pins must match exactly for PCB layout compatibility.

Base Product Number: Both parts share the ATMEGA162 base designation, confirming they belong to the same product family.

Electrical Characteristics: While operating speed and supply voltage ranges may differ, the substitute must support the same core functionality and peripheral set (EBI/EMI, SPI, UART/USART, Brown-out Detect/Reset, POR, PWM, WDT).

The ATMEGA162V-8AU qualifies as a manufacturer-recommended substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA162V-8AU is the manufacturer-recommended substitute for the obsolete ATMEGA162V-1AC. Selection of this substitute is justified on the following grounds:

Product Status: The ATMEGA162V-1AC is classified as obsolete, whereas the ATMEGA162V-8AU maintains active product status with full manufacturer support and availability.

Regulatory Compliance: The ATMEGA162V-8AU is ROHS3 compliant, meeting current environmental and regulatory requirements. The original part is RoHS non-compliant, presenting compliance risks for new designs and production.

Functional Equivalence: Both parts share identical core architecture, memory configuration, I/O count, and peripheral set, ensuring firmware compatibility without code modification.

Electrical Compatibility: The substitute supports an extended supply voltage range (1.8V ~ 5.5V) compared to the original (1.8V ~ 3.6V), providing greater design flexibility. The expanded operating temperature range (-40°C ~ 85°C) accommodates broader environmental conditions.

Performance Consideration: The ATMEGA162V-8AU operates at 8MHz versus the original 1MHz. Applications designed for the 1MHz part will function correctly at 8MHz without modification, though power consumption will increase proportionally.

Frequently Asked Questions (FAQ)

Q: Can the ATMEGA162V-8AU be used as a direct replacement for the ATMEGA162V-1AC?

A: Yes. Both parts share identical program memory (16KB FLASH), RAM (1K x 8), EEPROM (512 x 8), I/O count (35), and package (44-TQFP). The instruction set and peripheral functionality are identical, enabling direct substitution without firmware changes.

Q: What are the key differences between these parts?

A: The primary differences are operating speed (1MHz vs. 8MHz), supply voltage range (1.8V ~ 3.6V vs. 1.8V ~ 5.5V), operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C), product status (obsolete vs. active), and regulatory compliance (RoHS non-compliant vs. ROHS3 compliant).

Q: Will the higher operating speed of the ATMEGA162V-8AU affect my application?

A: Applications designed for the 1MHz part will execute correctly at 8MHz. Timing-dependent code may require adjustment if clock-based delays are hardcoded. Power consumption will increase with the higher clock frequency.

Q: Are the packages identical?

A: Yes. Both parts use the 44-TQFP (10x10) package with identical pinout and 35 I/O pins. PCB layouts are fully compatible without modification.

Q: What is the significance of the different RoHS statuses?

A: The ATMEGA162V-1AC is RoHS non-compliant, while the ATMEGA162V-8AU is ROHS3 compliant. For new designs and production, the compliant substitute is required to meet current environmental regulations and customer requirements.

Q: Does the extended supply voltage range of the substitute create any compatibility issues?

A: No. The substitute's wider voltage range (1.8V ~ 5.5V) is a superset of the original specification (1.8V ~ 3.6V). Designs operating within the original voltage range will function identically on the substitute.