ATMEGA8515-16JC Equivalent & Substitute Parts

Part Overview

The ATMEGA8515-16JC is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 8KB of FLASH program memory, 512 bytes of EEPROM, and 512 bytes of RAM. Operating at 16MHz with a 4.5V to 5.5V supply voltage, this device integrates 35 I/O pins and supports multiple connectivity protocols including SPI, UART/USART, and EBI/EMI interfaces. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8-Bit
Speed	16MHz
Program Memory Size	8KB (4K x 16)
Program Memory Type	FLASH
EEPROM Size	512 x 8
RAM Size	512 x 8
Number of I/O	35
Voltage - Supply (Vcc/Vdd)	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	44-LCC (J-Lead)
Connectivity	EBI/EMI, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT

Substitute Part Grouping Explanation

The ATMEGA8515-16JU qualifies as a direct substitute for the ATMEGA8515-16JC based on the following critical parameters:

All electrical specifications are identical: 8-bit AVR core, 16MHz operation, 8KB FLASH memory, 512 bytes EEPROM, 512 bytes RAM, 35 I/O pins, 4.5V to 5.5V supply voltage, and identical peripheral set (Brown-out Detect/Reset, POR, PWM, WDT).

Both devices use the same 44-LCC (J-Lead) package with identical physical dimensions (16.6x16.6mm), ensuring mechanical compatibility in PCB layouts.

The primary differences are packaging format (Tube vs. standard packaging) and product status (Active vs. Obsolete), with the substitute offering an extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and improved compliance certifications.

Parameter Comparison

Parameter	ATMEGA8515-16JC	ATMEGA8515-16JU
Manufacturer	Microchip Technology	Microchip Technology
Core Processor	AVR	AVR
Core Size	8-Bit	8-Bit
Speed	16MHz	16MHz
Program Memory Size	8KB (4K x 16)	8KB (4K x 16)
Program Memory Type	FLASH	FLASH
EEPROM Size	512 x 8	512 x 8
RAM Size	512 x 8	512 x 8
Number of I/O	35	35
Voltage - Supply (Vcc/Vdd)	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	44-LCC (J-Lead)	44-LCC (J-Lead)
Connectivity	EBI/EMI, SPI, UART/USART	EBI/EMI, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)	3 (168 Hours)

Engineering Selection Recommendations

The ATMEGA8515-16JU is the recommended substitute for the obsolete ATMEGA8515-16JC. Both devices share identical core functionality, memory configuration, I/O count, and peripheral set, with pin-for-pin compatibility in the 44-LCC package.

The ATMEGA8515-16JU offers superior compliance status, meeting ROHS3 requirements compared to the non-compliant ATMEGA8515-16JC. The extended operating temperature range (-40°C to 85°C) provides broader environmental applicability for industrial and extended-temperature applications.

For designs currently using the ATMEGA8515-16JC, direct replacement with the ATMEGA8515-16JU requires no circuit modifications, firmware changes, or PCB layout alterations. The active product status of the ATMEGA8515-16JU ensures long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Are the ATMEGA8515-16JC and ATMEGA8515-16JU pin-compatible?

A: Yes. Both devices use the 44-LCC (J-Lead) package with identical pinout 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 vs. Active), RoHS compliance (non-compliant vs. ROHS3 Compliant), operating temperature range (0°C to 70°C vs. -40°C to 85°C), and packaging format (standard vs. Tube). All electrical and functional specifications are identical.

Q: Can I use the ATMEGA8515-16JU in applications designed for the ATMEGA8515-16JC?

A: Yes. The ATMEGA8515-16JU is a direct functional equivalent with identical core specifications, memory configuration, and peripheral set. The extended temperature range and improved compliance make it suitable for all applications previously using the ATMEGA8515-16JC.

Q: What does the extended operating temperature range mean for my application?

A: The ATMEGA8515-16JU operates from -40°C to 85°C, compared to 0°C to 70°C for the ATMEGA8515-16JC. This allows operation in wider environmental conditions, including industrial and automotive temperature ranges, without performance degradation.

Q: Is the ATMEGA8515-16JU RoHS compliant?

A: Yes. The ATMEGA8515-16JU meets ROHS3 compliance requirements, whereas the ATMEGA8515-16JC is RoHS non-compliant. This is relevant for applications subject to RoHS regulations in the EU and other regions.

Q: Are there any firmware or software changes required when switching from ATMEGA8515-16JC to ATMEGA8515-16JU?

A: No. Both devices are functionally identical at the instruction set and peripheral level. Existing firmware requires no modifications for operation on the ATMEGA8515-16JU.

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