ATMEGA324P-A15MZ Equivalent & Substitute Parts

Part Overview

The ATMEGA324P-A15MZ is an 8-bit AVR microcontroller from Microchip Technology's ATmega series, featuring 32KB FLASH memory, 2KB RAM, and 1KB EEPROM. This device integrates 32 I/O pins, multiple communication interfaces (I2C, SPI, UART/USART), and operates at 16MHz with an internal oscillator. The part is currently classified as obsolete, making identification of active equivalent substitutes essential for ongoing production and design continuity.

Substiute Parts

ATMEGA324P-A15MZ

Microchip TechnologyIn Stock: 5498ATMEGA324P-A15MZ Datasheet

Current PartRFQ

ATMEGA324P-B15MZ

Microchip TechnologyIn Stock: 54317ATMEGA324P-B15MZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The ATMEGA324P-A15MZ has one parametric equivalent substitute: ATMEGA324P-B15MZ. This substitution is valid based on the following matching criteria:

Identical Parameters:

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Program Memory: 32KB FLASH (16K x 16)
• RAM: 2K x 8
• EEPROM: 1K x 8
• Number of I/O: 32
• Connectivity: I2C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Data Converters: A/D 8x10b
• Voltage Supply: 2.7V ~ 5.5V
• Operating Temperature: -40°C ~ 125°C (TA)
• Mounting Type: Surface Mount
• Package / Case: 44-VFQFN Exposed Pad
• Grade: Automotive
• Qualification: AEC-Q100
• RoHS Status: ROHS3 Compliant

The primary distinction between these parts is product status and moisture sensitivity level, with the substitute part currently in active production.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA324P-B15MZ is the direct parametric equivalent for the obsolete ATMEGA324P-A15MZ. Both parts maintain identical electrical specifications, memory configurations, I/O counts, and peripheral sets. The substitute part is currently in active production status, ensuring availability for new designs and production continuity.

Both parts carry automotive-grade qualification (AEC-Q100) and maintain ROHS3 compliance, meeting stringent reliability and environmental standards. The difference in moisture sensitivity level (MSL 1 versus MSL 3) reflects manufacturing process variations but does not affect functional equivalence or electrical performance.

For applications requiring the ATMEGA324P-A15MZ, the ATMEGA324P-B15MZ provides a direct replacement with identical pinout, memory architecture, and operational characteristics.

Frequently Asked Questions (FAQ)

Q: Are ATMEGA324P-A15MZ and ATMEGA324P-B15MZ pin-compatible?

A: Yes. Both parts use the 44-VFQFN Exposed Pad package with identical pinout and electrical specifications. Direct PCB substitution is supported without design modifications.

Q: What does the difference in product status mean?

A: The ATMEGA324P-A15MZ is classified as obsolete and no longer manufactured. The ATMEGA324P-B15MZ is in active production, ensuring reliable supply for current and future applications.

Q: How does the moisture sensitivity level (MSL) difference affect usage?

A: MSL 1 (unlimited) indicates no moisture sensitivity constraints. MSL 3 (168 hours) requires storage in controlled humidity environments and limits shelf life after moisture exposure. Both parts are suitable for standard manufacturing processes; MSL 3 requires standard moisture control practices during assembly.

Q: Can I use ATMEGA324P-B15MZ in existing designs using ATMEGA324P-A15MZ?

A: Yes. Identical electrical specifications, memory configuration, I/O count, and peripheral set enable direct functional replacement without firmware or hardware modifications.

Q: Are both parts automotive-qualified?

A: Yes. Both parts carry automotive-grade classification and AEC-Q100 qualification, meeting automotive reliability and quality standards.