AT90LS2343-4PC Equivalent & Substitute Parts

Part Overview

The AT90LS2343-4PC is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 2KB of 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 brown-out detection, power-on reset, and watchdog timer functionality in an 8-PDIP package.

The AT90LS2343-4PC is classified as obsolete. Identifying functionally equivalent substitute components is necessary to support legacy system maintenance, design updates, and production continuity where original components are no longer readily available or have been discontinued by the manufacturer.

Substiute Parts

AT90LS2343-4PC

Microchip TechnologyIn Stock: 1100AT90LS2343-4PC Datasheet

Current PartRFQ

ATTINY25V-10PU

Microchip TechnologyIn Stock: 5149ATTINY25V-10PU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT90LS2343-4PC is determined by the following critical parameters:

• Core Architecture: AVR processor family
• Memory Configuration: Minimum 2KB FLASH, 128 bytes EEPROM, 128 bytes RAM
• Package Compatibility: 8-PDIP form factor with 0.300" (7.62mm) pitch
• Mounting Type: Through-hole technology
• Electrical Compatibility: Supply voltage range must encompass or be compatible with 2.7V ~ 6V operation

The ATTINY25V-10PU meets these substitution criteria through identical memory specifications, matching package geometry, and compatible electrical characteristics within the defined voltage operating window.

Parameter Comparison

Engineering Selection Recommendations

The ATTINY25V-10PU is a direct functional substitute for the AT90LS2343-4PC based on matching memory architecture, identical package geometry, and compatible electrical operation within overlapping voltage ranges.

The substitute part offers the following advantages: active product status ensuring continued availability, ROHS3 compliance for modern manufacturing and environmental standards, and extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C). The supply voltage range of the ATTINY25V-10PU (1.8V ~ 5.5V) overlaps the original part's range (2.7V ~ 6V) across the 2.7V ~ 5.5V window, supporting direct replacement in applications operating within this common band.

Selection of the ATTINY25V-10PU eliminates obsolescence risk while maintaining functional and physical compatibility with existing through-hole PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the ATTINY25V-10PU directly replace the AT90LS2343-4PC in existing designs?

A: Yes. Both devices share identical 8-PDIP package geometry, matching pin pitch (0.300"), and equivalent memory configurations (2KB FLASH, 128 bytes EEPROM, 128 bytes RAM). Through-hole mounting compatibility is maintained. The overlapping supply voltage range (2.7V ~ 5.5V) supports direct PCB substitution.

Q: What are the voltage supply differences between these parts?

A: The AT90LS2343-4PC operates from 2.7V ~ 6V. The ATTINY25V-10PU operates from 1.8V ~ 5.5V. Applications designed for 2.7V ~ 5.5V operation are fully compatible with both parts. Designs requiring operation above 5.5V would require evaluation of the substitute part's performance at the upper voltage limit.

Q: Are there differences in operating temperature ranges?

A: The AT90LS2343-4PC is rated for 0°C ~ 70°C. The ATTINY25V-10PU is rated for -40°C ~ 85°C. The substitute part supports a wider temperature envelope, providing additional operational margin for extended-temperature applications.

Q: What is the significance of the product status difference?

A: The AT90LS2343-4PC is obsolete and no longer manufactured. The ATTINY25V-10PU is active, ensuring long-term availability, continued manufacturing support, and access to current documentation and development tools.

Q: Does the RoHS compliance difference affect substitution?

A: The AT90LS2343-4PC is RoHS non-compliant. The ATTINY25V-10PU is ROHS3 compliant. For new designs or manufacturing environments with RoHS requirements, the substitute part satisfies regulatory compliance. Existing legacy systems may continue using either part based on application requirements.

Q: Are the pin configurations identical?

A: Both parts use 8-PDIP packaging with matching pin pitch and form factor. Pin-level compatibility must be verified against specific application schematics, as peripheral functionality differences may exist between the AVR 90LS and AVR ATtiny series.