AT24C01-10PC-2.5 Equivalent & Substitute Parts

Part Overview

The AT24C01-10PC-2.5 is a 1Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, featuring I2C serial interface operation at 400 kHz. This device is designed for non-volatile data storage applications requiring low-power, two-wire communication protocols. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

AT24C01-10PC-2.5

Microchip TechnologyIn Stock: 918AT24C01-10PC-2.5 Datasheet

Current PartRFQ

24LC21/P

Microchip TechnologyIn Stock: 388424LC21/P Datasheet

Parametric EquivalentRFQ

24LC21A/P

Microchip TechnologyIn Stock: 2355124LC21A/P Datasheet

Parametric EquivalentRFQ

24LCS21A/P

Microchip TechnologyIn Stock: 304124LCS21A/P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT24C01-10PC-2.5 is determined by strict equivalence across the following critical parameters: memory capacity (1Kbit), memory organization (128 x 8), interface protocol (I2C), clock frequency (400 kHz), access time (900 ns), write cycle time (10 ms), supply voltage range (2.5V to 5.5V), operating temperature range (0°C to 70°C), and physical package format (8-DIP through-hole). All identified substitute parts maintain these specifications without deviation. The substitute parts listed—24LC21/P, 24LC21A/P, and 24LCS21A/P—are all manufactured by Microchip Technology and share identical functional and electrical characteristics with the main part number.

Parameter Comparison

Engineering Selection Recommendations

The AT24C01-10PC-2.5 is classified as obsolete and should be replaced with an active equivalent for new designs and ongoing system support. All three substitute parts—24LC21/P, 24LC21A/P, and 24LCS21A/P—are currently active products manufactured by Microchip Technology and maintain full electrical and mechanical compatibility with the original part.

For applications requiring RoHS3 compliance, all three substitute parts satisfy this requirement, whereas the original AT24C01-10PC-2.5 does not. The 24LC21A/P offers the highest inventory availability at 23,469 pieces in stock, followed by 24LCS21A/P at 3,006 pieces and 24LC21/P at 3,811 pieces. All substitute parts are verified as programmable through DiGi-Electronics and carry identical REACH and ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can the 24LC21/P, 24LC21A/P, or 24LCS21A/P be used as direct replacements for the AT24C01-10PC-2.5?

A: Yes. All three parts are parametric equivalents with identical memory capacity, organization, interface protocol, timing specifications, voltage range, temperature range, and 8-DIP through-hole package format. Direct pin-for-pin substitution is supported.

Q: What is the primary reason for substituting the AT24C01-10PC-2.5?

A: The AT24C01-10PC-2.5 is classified as obsolete. The substitute parts are active products with assured long-term availability and manufacturing support.

Q: Are there compliance differences between the original part and the substitutes?

A: Yes. The AT24C01-10PC-2.5 is RoHS non-compliant, while all three substitute parts are ROHS3 compliant. All parts maintain identical REACH and ECCN classifications.

Q: Do the substitute parts have the same I2C interface specifications?

A: Yes. All substitute parts operate at 400 kHz clock frequency with 900 ns access time and 10 ms write cycle time, matching the original part exactly.

Q: Are there any differences in the physical package between the original and substitute parts?

A: No. All parts use the 8-DIP (0.300", 7.62mm) through-hole package format with identical pin configuration and mechanical dimensions.

Q: Which substitute part should be selected for maximum inventory availability?

A: The 24LC21A/P offers the highest inventory level at 23,469 pieces in stock, providing optimal supply chain continuity.