ATMEGA323-8PC Equivalent & Substitute Parts

Part Overview

The ATMEGA323-8PC is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 32KB FLASH memory, 2KB RAM, and 1KB EEPROM. This device integrates 32 I/O pins, internal oscillator, and communication interfaces including I2C, SPI, and UART/USART. The ATMEGA323-8PC is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

ATMEGA323-8PC

Microchip TechnologyIn Stock: 1157ATMEGA323-8PC Datasheet

Current PartRFQ

ATMEGA32L-8PU

AtmelIn Stock: 5000199ATMEGA32L-8PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA323-8PC is based on strict equivalence of core functional parameters: 8-bit AVR architecture, 32KB FLASH memory capacity, 2KB RAM, 1KB EEPROM, 32 I/O pins, identical peripheral set (I2C, SPI, UART/USART, Brown-out Detect/Reset, POR, PWM, WDT), 8x10-bit A/D converters, internal oscillator, and 40-PDIP package configuration.

The ATMEGA32L-8PU qualifies as a direct substitute based on these parameters. Both devices share identical memory architecture, I/O count, peripheral functionality, and physical packaging. The substitute maintains full compatibility with the core electrical and mechanical specifications required for component selection.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA32L-8PU is the designated substitute for the obsolete ATMEGA323-8PC. Selection of the ATMEGA32L-8PU is based on product status transition: the original part is obsolete while the substitute maintains active production status, ensuring long-term availability and supply chain continuity.

Both devices share identical core architecture, memory configuration, I/O structure, and peripheral functionality. The ATMEGA32L-8PU provides extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and expanded supply voltage range (2.7V to 5.5V versus 4.5V to 5.5V), offering enhanced operational flexibility for new designs.

Physical packaging is identical (40-PDIP), enabling direct socket compatibility without PCB modification. Both devices carry identical ECCN and HTSUS classifications, maintaining regulatory consistency.

Frequently Asked Questions (FAQ)

Q: Can the ATMEGA32L-8PU directly replace the ATMEGA323-8PC in existing designs?

A: Yes. Both devices share identical pinout, package configuration (40-PDIP), memory architecture, I/O count, and peripheral functionality. Direct socket substitution is possible without circuit modification.

Q: What are the key differences between these devices?

A: The ATMEGA32L-8PU provides extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and broader supply voltage tolerance (2.7V to 5.5V versus 4.5V to 5.5V). The ATMEGA323-8PC is obsolete; the ATMEGA32L-8PU is in active production.

Q: Are there any voltage supply considerations for substitution?

A: The ATMEGA323-8PC requires 4.5V to 5.5V supply. The ATMEGA32L-8PU operates across 2.7V to 5.5V. Designs operating at the lower voltage boundary (below 4.5V) require the ATMEGA32L-8PU. Designs within the 4.5V to 5.5V range are compatible with both devices.

Q: Is the 40-PDIP package identical for both parts?

A: Yes. Both devices use 40-DIP (0.600", 15.24mm) packaging with identical pinout and mechanical dimensions, enabling direct PCB compatibility.

Q: Why is the ATMEGA323-8PC classified as obsolete?

A: The ATMEGA323-8PC has reached end-of-life status. The ATMEGA32L-8PU represents the active production equivalent, ensuring continued component availability for new designs and production requirements.