ATMEGA3250V-8AI Equivalent & Substitute Parts

Part Overview

The ATMEGA3250V-8AI is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 32KB FLASH memory, 2KB RAM, and 1KB EEPROM. This Surface Mount device operates at 8MHz with a supply voltage range of 1.8V to 5.5V and is housed in a 100-TQFP package. The part is currently classified as Obsolete, making identification of compatible substitutes essential for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	ATMEGA3250V-8AI
Manufacturer	Microchip Technology
Core Processor	AVR
Core Size	8-Bit
Speed	8MHz
Program Memory Size	32KB (16K x 16)
Program Memory Type	FLASH
EEPROM Size	1K x 8
RAM Size	2K x 8
Voltage - Supply (Vcc/Vdd)	1.8V ~ 5.5V
Number of I/O	69
Data Converters	A/D 8x10b
Connectivity	SPI, UART/USART, USI
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	100-TQFP (14x14)
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the ATMEGA3250V-8AI is determined by strict equivalence across the following critical parameters:

Core Architecture: AVR processor family
Memory Configuration: 32KB FLASH, 2KB RAM, 1KB EEPROM
Clock Speed: 8MHz operation
Supply Voltage Range: 1.8V ~ 5.5V
I/O Count: 69 pins
Package Type: 100-TQFP (14x14) Surface Mount
Peripheral Set: SPI, UART/USART, USI connectivity with Brown-out Detect/Reset, POR, PWM, WDT
Data Conversion: A/D 8x10b

The ATMEGA3250V-8AU meets all these parameters identically. The primary distinction lies in packaging format (Tray versus standard packaging) and product status (Active versus Obsolete), with the substitute offering improved compliance certifications.

Parameter Comparison

Parameter	ATMEGA3250V-8AI	ATMEGA3250V-8AU
Manufacturer	Microchip Technology	Microchip Technology
Core Processor	AVR	AVR
Core Size	8-Bit	8-Bit
Speed	8MHz	8MHz
Program Memory Size	32KB (16K x 16)	32KB (16K x 16)
Program Memory Type	FLASH	FLASH
EEPROM Size	1K x 8	1K x 8
RAM Size	2K x 8	2K x 8
Voltage - Supply (Vcc/Vdd)	1.8V ~ 5.5V	1.8V ~ 5.5V
Number of I/O	69	69
Data Converters	A/D 8x10b	A/D 8x10b
Connectivity	SPI, UART/USART, USI	SPI, UART/USART, USI
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	100-TQFP (14x14)	100-TQFP (14x14)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The ATMEGA3250V-8AU is a direct functional equivalent to the ATMEGA3250V-8AI with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

Product Status: The ATMEGA3250V-8AI is Obsolete, while the ATMEGA3250V-8AU is Active. For new designs or long-term production continuity, the Active status of the ATMEGA3250V-8AU ensures ongoing availability and manufacturer support.

Compliance Certifications: The ATMEGA3250V-8AU is ROHS3 Compliant, whereas the ATMEGA3250V-8AI is RoHS non-compliant. Applications subject to RoHS regulations require the ATMEGA3250V-8AU.

Packaging Format: The ATMEGA3250V-8AU is supplied in Tray packaging, which may affect procurement logistics and handling procedures compared to standard packaging formats.

Inventory Availability: Current stock levels show 777 units of ATMEGA3250V-8AU available, supporting immediate procurement needs.

Frequently Asked Questions (FAQ)

Q: Are the ATMEGA3250V-8AI and ATMEGA3250V-8AU pin-compatible?

A: Yes. Both devices use the 100-TQFP (14x14) package with identical pinout, I/O configuration (69 pins), and electrical characteristics. Direct PCB substitution is possible without layout modifications.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (Obsolete versus Active), RoHS compliance certification (non-compliant versus ROHS3 Compliant), and packaging format (standard versus Tray). All functional parameters, memory configuration, and electrical specifications are identical.

Q: Can I use the ATMEGA3250V-8AU as a drop-in replacement for the ATMEGA3250V-8AI?

A: Yes, from an electrical and mechanical standpoint. The ATMEGA3250V-8AU is functionally equivalent with identical core architecture, memory, speed, voltage range, and peripheral set. Compliance requirements and product lifecycle considerations should guide the selection decision.

Q: What does "Obsolete" status mean for the ATMEGA3250V-8AI?

A: Obsolete status indicates that Microchip Technology has discontinued manufacturing and support for this part. Existing inventory may be available through distributors, but long-term availability is not guaranteed. The Active ATMEGA3250V-8AU is the recommended alternative for ongoing applications.

Q: Are there any thermal or operating condition differences between these parts?

A: No. Both parts operate across the identical temperature range of -40°C to 85°C (TA) and support the same supply voltage range of 1.8V to 5.5V. Thermal and electrical performance characteristics are equivalent.

Q: What is the significance of the Moisture Sensitivity Level (MSL) rating?

A: Both parts carry an MSL rating of 3 (168 Hours), indicating identical moisture handling requirements. Storage and handling procedures must comply with this classification to prevent component degradation prior to assembly.

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