ATMEGA8515L-8PC Equivalent & Substitute Parts

Part Overview

The ATMEGA8515L-8PC 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. This device integrates essential peripherals including UART/USART, SPI, PWM, watchdog timer, and brown-out detection, operating at 8MHz with a supply voltage range of 2.7V to 5.5V. The component is mounted in a 40-pin DIP package suitable for through-hole applications.

The ATMEGA8515L-8PC is classified as obsolete. Locating equivalent substitute parts is necessary to support legacy system maintenance, board repairs, and continued production of devices utilizing this microcontroller architecture.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8-Bit
Speed	8MHz
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)	2.7V ~ 5.5V
Connectivity	EBI/EMI, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Mounting Type	Through Hole
Package / Case	40-DIP (0.600", 15.24mm)
Operating Temperature	0°C ~ 70°C (TA)

Substitute Part Grouping Explanation

Substitution of the ATMEGA8515L-8PC 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 (8KB FLASH)
EEPROM and RAM sizes (512 x 8 each)
I/O pin count (35)
Supply voltage range (2.7V ~ 5.5V)
Peripheral feature set (UART/USART, SPI, PWM, WDT, brown-out detection)
Physical package type and pin configuration (40-DIP)
Mounting technology (Through Hole)

The ATMEGA8515L-8PU meets all these criteria and qualifies as a direct functional equivalent. Both parts share identical electrical specifications, memory architecture, and peripheral functionality. The primary difference lies in packaging format (DIP vs. PDIP tube packaging) and operating temperature range extension in the substitute part.

Parameter Comparison

Parameter	ATMEGA8515L-8PC	ATMEGA8515L-8PU	Compatibility
Manufacturer	Microchip Technology	Microchip Technology	Identical
Core Processor	AVR	AVR	Identical
Core Size	8-Bit	8-Bit	Identical
Speed	8MHz	8MHz	Identical
Program Memory Size	8KB (4K x 16)	8KB (4K x 16)	Identical
Program Memory Type	FLASH	FLASH	Identical
EEPROM Size	512 x 8	512 x 8	Identical
RAM Size	512 x 8	512 x 8	Identical
Number of I/O	35	35	Identical
Voltage - Supply (Vcc/Vdd)	2.7V ~ 5.5V	2.7V ~ 5.5V	Identical
Connectivity	EBI/EMI, SPI, UART/USART	EBI/EMI, SPI, UART/USART	Identical
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT	Identical
Mounting Type	Through Hole	Through Hole	Identical
Package / Case	40-DIP (0.600", 15.24mm)	40-DIP (0.600", 15.24mm)	Identical
Operating Temperature	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	Substitute has extended range
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute meets current compliance
Product Status	Obsolete	Obsolete	Both obsolete

Engineering Selection Recommendations

The ATMEGA8515L-8PU is a direct functional substitute for the ATMEGA8515L-8PC. Both devices are classified as obsolete products from Microchip Technology.

Selection between these parts should be based on the following factors:

Operating temperature requirements: The ATMEGA8515L-8PU supports an extended temperature range (-40°C to 85°C) compared to the ATMEGA8515L-8PC (0°C to 70°C). Applications requiring operation outside the 0°C to 70°C window must use the ATMEGA8515L-8PU.
Regulatory compliance: The ATMEGA8515L-8PU is ROHS3 compliant, while the ATMEGA8515L-8PC is RoHS non-compliant. Systems subject to RoHS requirements must use the ATMEGA8515L-8PU.
Packaging format: Both parts use identical 40-DIP physical packages and pin configurations, ensuring direct board-level compatibility without layout modifications.
Electrical and functional equivalence: All core electrical specifications, memory architecture, peripheral features, and I/O configurations are identical between the two parts.

Frequently Asked Questions (FAQ)

Q: Can the ATMEGA8515L-8PU be used as a direct replacement for the ATMEGA8515L-8PC on existing PCBs?

A: Yes. Both parts use identical 40-DIP package geometry and pin configurations. No PCB layout modifications are required for substitution.

Q: What is the primary difference between these two parts?

A: The ATMEGA8515L-8PU offers an extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and is ROHS3 compliant, whereas the ATMEGA8515L-8PC is RoHS non-compliant. All electrical and functional specifications are identical.

Q: Are there any firmware or software compatibility issues when switching between these parts?

A: No. Both parts implement identical AVR core architecture, instruction sets, memory organization, and peripheral interfaces. Existing firmware requires no modification.

Q: Why is the ATMEGA8515L-8PU recommended over the ATMEGA8515L-8PC?

A: The ATMEGA8515L-8PU provides extended temperature range coverage and meets current RoHS3 compliance standards, making it suitable for a broader range of applications and regulatory environments.

Q: Are both parts currently available for purchase?

A: Both parts are classified as obsolete. Availability is limited to existing inventory from authorized distributors. The ATMEGA8515L-8PU may have better availability due to its compliance status.

Q: What is the pin count and package type for both parts?

A: Both parts are housed in a 40-pin DIP package with 0.600-inch (15.24mm) body width. Pin count and configuration are identical.

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