AT90LS2323-4PC Equivalent & Substitute Parts

Part Overview

The AT90LS2323-4PC is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 2KB FLASH program memory, 128 bytes of EEPROM, and 128 bytes of RAM. Designed for embedded applications requiring low-power operation across a 2.7V to 6V supply range, this device integrates essential peripherals including brown-out detection, power-on reset, and watchdog timer functionality. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and production continuity.

Substiute Parts

AT90LS2323-4PC

Microchip TechnologyIn Stock: 2221AT90LS2323-4PC Datasheet

Current PartRFQ

ATTINY25V-10PU

Microchip TechnologyIn Stock: 5149ATTINY25V-10PU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT90LS2323-4PC is determined by strict equivalence in the following parameters:

• Core Architecture: AVR processor family
• Memory Configuration: 2KB FLASH, 128 x 8 EEPROM, 128 x 8 RAM
• Package Compatibility: 8-DIP (0.300", 7.62mm) through-hole mounting
• Electrical Interface: Pin-compatible pinout supporting SPI/USI connectivity

The ATTINY25V-10PU meets these core substitution criteria while maintaining identical memory specifications and package form factor. Differences in operating speed, supply voltage range, and peripheral feature set do not preclude substitution when application requirements permit.

Parameter Comparison

Engineering Selection Recommendations

The ATTINY25V-10PU serves as a direct functional substitute for the obsolete AT90LS2323-4PC based on identical core memory architecture and package compatibility. The substitute part offers active product status, ensuring long-term availability and supply chain continuity.

Key compliance advantages of the ATTINY25V-10PU include ROHS3 compliance, addressing regulatory requirements for new designs. The extended operating temperature range (-40°C to 85°C) and lower minimum supply voltage (1.8V) provide enhanced flexibility for diverse application environments compared to the original part's 0°C to 70°C specification.

The ATTINY25V-10PU incorporates additional integrated features including PWM capability and 4-channel 10-bit analog-to-digital conversion, along with six I/O pins versus three on the original device. These enhancements do not compromise backward compatibility for applications utilizing only the core memory and basic I/O functionality of the AT90LS2323-4PC.

Frequently Asked Questions (FAQ)

Q: Are AT90LS2323-4PC and ATTINY25V-10PU pin-compatible?

A: Both devices utilize 8-DIP (0.300", 7.62mm) through-hole packaging with identical pinout configuration for core functionality. Pin compatibility is maintained for standard microcontroller operations.

Q: What are the primary differences between these parts?

A: The ATTINY25V-10PU operates at 10MHz versus 4MHz for the AT90LS2323-4PC, features an extended operating temperature range, supports lower minimum supply voltage (1.8V), and includes integrated PWM and analog-to-digital conversion capabilities. Memory specifications remain identical.

Q: Can ATTINY25V-10PU replace AT90LS2323-4PC in existing designs?

A: Substitution is viable for applications where the original part's 4MHz speed and 2.7V minimum supply voltage are not critical design constraints. The substitute's higher speed and lower voltage threshold provide operational margin in most embedded applications.

Q: What is the supply voltage compatibility?

A: The AT90LS2323-4PC operates from 2.7V to 6V. The ATTINY25V-10PU operates from 1.8V to 5.5V. Designs operating within the 2.7V to 5.5V overlap range are fully compatible.

Q: Does the ATTINY25V-10PU meet current regulatory standards?

A: The ATTINY25V-10PU is ROHS3 compliant, meeting current environmental and regulatory requirements. The original AT90LS2323-4PC is RoHS non-compliant.

Q: Are there connectivity differences?

A: The AT90LS2323-4PC features SPI connectivity. The ATTINY25V-10PU implements USI (Universal Serial Interface), which provides SPI-compatible operation while adding additional serial communication flexibility.