AT90S2343-10PI Equivalent & Substitute Parts

Part Overview

The AT90S2343-10PI is an 8-bit AVR microcontroller from Microchip Technology's AVR 90S series, featuring 2KB FLASH program memory, 128 bytes each of EEPROM and RAM, and operating at 10MHz. This device is classified as obsolete and is no longer in active production. Finding equivalent or substitute parts is necessary due to product discontinuation and the need for continued system support or new designs requiring similar functionality.

Substiute Parts

AT90S2343-10PI

Microchip TechnologyIn Stock: 906AT90S2343-10PI Datasheet

Current PartRFQ

ATTINY25V-10PU

Microchip TechnologyIn Stock: 5149ATTINY25V-10PU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT90S2343-10PI is determined by the following critical parameters:

• Core Architecture: AVR processor family ensures instruction set compatibility
• Memory Configuration: Identical 2KB FLASH, 128-byte EEPROM, and 128-byte RAM
• Operating Speed: 10MHz clock frequency
• Package Form Factor: 8-DIP through-hole package with 0.300" (7.62mm) pitch
• Voltage Range: Supply voltage compatibility within specified operating window
• Pin Count and I/O: Functional pin compatibility for circuit integration

The ATTINY25V-10PU meets these core substitution criteria while offering enhanced features and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ATTINY25V-10PU is a direct functional substitute for the AT90S2343-10PI based on matching core memory architecture, processor speed, and package form factor. Key advantages of the ATTINY25V-10PU include:

• Active Product Status: Currently in production with established supply chain availability
• RoHS3 Compliance: Meets modern environmental and regulatory requirements, whereas the AT90S2343-10PI is RoHS non-compliant
• Extended Voltage Range: Operates from 1.8V to 5.5V, providing greater flexibility than the 4V to 6V range of the original part
• Enhanced Peripherals: Includes PWM and A/D converter (4x10-bit) capabilities not present in the AT90S2343-10PI

For new designs or system replacements, the ATTINY25V-10PU is the recommended selection. For legacy systems requiring exact pin-for-pin compatibility with existing PCB layouts, both parts maintain identical 8-DIP package dimensions and pinout.

Frequently Asked Questions (FAQ)

Q: Are the AT90S2343-10PI and ATTINY25V-10PU pin-compatible?

A: Yes. Both devices use the 8-DIP package with 0.300" (7.62mm) pitch and maintain compatible pinout for through-hole mounting applications.

Q: What is the primary reason for substitution?

A: The AT90S2343-10PI is obsolete and no longer manufactured. The ATTINY25V-10PU provides equivalent core functionality with active production status and modern compliance certifications.

Q: Can the ATTINY25V-10PU operate in circuits designed for the AT90S2343-10PI?

A: The ATTINY25V-10PU operates within the 4V to 6V range specified for the AT90S2343-10PI, ensuring compatibility in existing circuit designs. The extended lower voltage range (1.8V) of the substitute allows operation in additional applications.

Q: What are the key memory specifications that determine substitution?

A: Both parts feature identical 2KB FLASH program memory, 128-byte EEPROM, and 128-byte RAM, making them functionally equivalent for memory-dependent applications.

Q: Does the ATTINY25V-10PU require firmware modifications?

A: Core instruction set compatibility between AVR processors minimizes firmware changes. However, the ATTINY25V-10PU includes additional peripherals (PWM, A/D converter) not present in the AT90S2343-10PI, which may require firmware updates if these features are utilized.

Q: What is the significance of RoHS3 compliance?

A: RoHS3 compliance indicates the ATTINY25V-10PU meets current environmental and hazardous substance restrictions, making it suitable for modern manufacturing and distribution channels. The AT90S2343-10PI's non-compliance status may restrict procurement options.