ATMEGA48V-10AI Equivalent & Substitute Parts

Part Overview

The ATMEGA48V-10AI is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 4KB FLASH program memory, 512 bytes of RAM, and 256 bytes of EEPROM. This device operates at 10MHz with a supply voltage range of 1.8V to 5.5V and includes integrated peripherals such as I2C, SPI, UART/USART connectivity, PWM, watchdog timer, and brown-out detection. The part is currently classified as obsolete, which necessitates identification of equivalent substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8-Bit
Speed	10MHz
Program Memory Size	4KB (2K x 16)
Program Memory Type	FLASH
EEPROM Size	256 x 8
RAM Size	512 x 8
Voltage - Supply (Vcc/Vdd)	1.8V ~ 5.5V
Number of I/O	23
Data Converters	A/D 8x10b
Connectivity	I2C, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	32-TQFP
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution of the ATMEGA48V-10AI is determined by strict equivalence across the following critical parameters:

Core Architecture: AVR processor family
Memory Configuration: 4KB FLASH, 512 bytes RAM, 256 bytes EEPROM
Operating Frequency: 10MHz
Supply Voltage Range: 1.8V ~ 5.5V
I/O Count: 23 pins
Package Format: 32-TQFP (7x7mm)
Peripheral Set: I2C, SPI, UART/USART, PWM, WDT, brown-out detection
Data Conversion: 8-channel 10-bit ADC

The identified substitute parts maintain identical electrical and functional specifications while differing in product status, packaging format, and compliance certifications. Both substitute parts are active products with verified programmability and RoHS3 compliance, addressing the obsolescence of the original component.

Parameter Comparison

Parameter	ATMEGA48V-10AI	ATMEGA48V-10AU	ATMEGA48PV-10AU
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology
Core Processor	AVR	AVR	AVR
Core Size	8-Bit	8-Bit	8-Bit
Speed	10MHz	10MHz	10MHz
Program Memory Size	4KB (2K x 16)	4KB (2K x 16)	4KB (2K x 16)
Program Memory Type	FLASH	FLASH	FLASH
EEPROM Size	256 x 8	256 x 8	256 x 8
RAM Size	512 x 8	512 x 8	512 x 8
Voltage - Supply (Vcc/Vdd)	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V
Number of I/O	23	23	23
Data Converters	A/D 8x10b	A/D 8x10b	A/D 8x10b
Connectivity	I2C, SPI, UART/USART	I2C, SPI, UART/USART	I2C, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	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)	-40°C ~ 85°C (TA)
Package / Case	32-TQFP	32-TQFP	32-TQFP
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99
HTSUS	8542.31.0001	8542.31.0001	8542.31.0001

Engineering Selection Recommendations

Both ATMEGA48V-10AU and ATMEGA48PV-10AU are functionally equivalent to the ATMEGA48V-10AI across all electrical and mechanical parameters. Selection between these substitutes is based on the following factors:

ATMEGA48V-10AU: This part maintains identical voltage specifications (1.8V ~ 5.5V) to the original component. It is an active product with verified programmability, RoHS3 compliance, and higher inventory availability (24,946 units). The packaging format is Tray, suitable for automated assembly processes.

ATMEGA48PV-10AU: This part is a parametric equivalent with identical electrical characteristics and memory configuration. It is an active product with verified programmability, RoHS3 compliance, and substantial inventory (18,112 units). The packaging format is Tray, compatible with standard production workflows.

Both substitute parts address the obsolescence status of the original ATMEGA48V-10AI while providing improved compliance certifications and active product support. The selection between ATMEGA48V-10AU and ATMEGA48PV-10AU depends on specific design voltage requirements and supply chain considerations, as both maintain full functional equivalence within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Are ATMEGA48V-10AU and ATMEGA48PV-10AU pin-compatible with ATMEGA48V-10AI?

A: Yes. All three parts use the 32-TQFP (7x7mm) package with identical pin assignments, I/O count (23), and peripheral connectivity (I2C, SPI, UART/USART).

Q: What is the difference between ATMEGA48V-10AU and ATMEGA48PV-10AU?

A: Both parts are parametric equivalents with identical core specifications: 8-bit AVR processor, 10MHz speed, 4KB FLASH, 512 bytes RAM, 256 bytes EEPROM, and 1.8V ~ 5.5V supply voltage range. The designation difference reflects internal voltage specifications, but both operate within the same supply voltage range and are functionally interchangeable for this application.

Q: Why is the original ATMEGA48V-10AI obsolete?

A: The ATMEGA48V-10AI is classified as obsolete by the manufacturer. The substitute parts ATMEGA48V-10AU and ATMEGA48PV-10AU are active products that provide identical functionality with improved compliance certifications (RoHS3).

Q: Can I use these substitutes in existing designs without modification?

A: Yes. The substitute parts maintain identical electrical specifications, memory configuration, peripheral set, and package format. No design modifications are required for direct substitution.

Q: What is the difference in packaging between the original and substitute parts?

A: The ATMEGA48V-10AI is supplied in standard packaging, while both ATMEGA48V-10AU and ATMEGA48PV-10AU are supplied in Tray packaging. Both are surface-mount 32-TQFP devices with identical physical dimensions (7x7mm).

Q: Are there any compliance differences between these parts?

A: The original ATMEGA48V-10AI is RoHS non-compliant. Both substitute parts (ATMEGA48V-10AU and ATMEGA48PV-10AU) are RoHS3 compliant. All three parts maintain identical REACH Unaffected status, ECCN EAR99 classification, and HTSUS 8542.31.0001 code.

Q: What is the moisture sensitivity level for these parts?

A: All three parts have Moisture Sensitivity Level (MSL) 3 with a 168-hour floor life requirement.

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