AT24C01-10PI-2.5 Equivalent & Substitute Parts

Part Overview

The AT24C01-10PI-2.5 is a 1Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology in 8-DIP through-hole packaging. This part is classified as obsolete, making equivalent and substitute components necessary for new designs and ongoing production requirements. The device provides non-volatile memory storage with 128 x 8 organization and operates across a supply voltage range of 2.5V to 5.5V with an operating temperature range of -40°C to 85°C.

Substiute Parts

AT24C01-10PI-2.5

Microchip TechnologyIn Stock: 961AT24C01-10PI-2.5 Datasheet

Current PartRFQ

24AA014H-I/P

Microchip TechnologyIn Stock: 233124AA014H-I/P Datasheet

DirectRFQ

24LC014-I/P

Microchip TechnologyIn Stock: 212424LC014-I/P Datasheet

Parametric EquivalentRFQ

24LC01BH-I/P

Microchip TechnologyIn Stock: 100524LC01BH-I/P Datasheet

Parametric EquivalentRFQ

24LC21-I/P

Microchip TechnologyIn Stock: 70024LC21-I/P Datasheet

Parametric EquivalentRFQ

24LC21A-I/P

Microchip TechnologyIn Stock: 114724LC21A-I/P Datasheet

Parametric EquivalentRFQ

24LCS21A-I/P

Microchip TechnologyIn Stock: 105824LCS21A-I/P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT24C01-10PI-2.5 are classified based on strict parameter compatibility within the EEPROM memory IC category. The substitution logic is determined by the following critical parameters:

Core Compatibility Parameters:

• Memory Size: 1Kbit (128 x 8 organization)
• Interface Protocol: I2C
• Clock Frequency: 400 kHz
• Access Time: 900 ns
• Package Type: 8-DIP through-hole
• Operating Temperature Range: -40°C ~ 85°C

Voltage Supply Compatibility: Substitute parts must operate within overlapping supply voltage ranges. The main part operates at 2.5V ~ 5.5V. Substitutes with wider voltage ranges (1.7V ~ 5.5V) remain compatible for applications using the 2.5V ~ 5.5V window.

Write Cycle Time Variation: The main part specifies 10 ms write cycle time. Substitute parts with 5 ms write cycle time represent improved performance characteristics while maintaining functional compatibility.

Product Status Consideration: Active status substitutes are preferred over obsolete parts for new designs and long-term availability.

Parameter Comparison

Engineering Selection Recommendations

For RoHS Compliance Requirements: All substitute parts listed (24AA014H-I/P, 24LC014-I/P, 24LC01BH-I/P, 24LC21-I/P, 24LC21A-I/P, 24LCS21A-I/P) are ROHS3 compliant, whereas the main part AT24C01-10PI-2.5 is RoHS non-compliant. Selection of any substitute part satisfies modern environmental and regulatory compliance standards.

For Active Product Status: All substitute parts maintain active product status with Microchip Technology, ensuring long-term availability and continued manufacturing support. The obsolete status of AT24C01-10PI-2.5 necessitates transition to active alternatives.

For Voltage Supply Range Compatibility: 24AA014H-I/P offers the widest supply voltage range (1.7V ~ 5.5V) and remains compatible with 2.5V ~ 5.5V applications. Parts 24LC014-I/P, 24LC01BH-I/P, 24LC21-I/P, 24LC21A-I/P, and 24LCS21A-I/P maintain the exact supply voltage range of the main part (2.5V ~ 5.5V).

For Write Cycle Time Performance: 24AA014H-I/P, 24LC014-I/P, and 24LC01BH-I/P provide improved write cycle time of 5 ms compared to the main part's 10 ms specification. Parts 24LC21-I/P, 24LC21A-I/P, and 24LCS21A-I/P maintain the 10 ms write cycle time matching the original specification.

For Programmability Verification: 24LC21-I/P and 24LC21A-I/P are verified as programmable through DiGi-Electronics. Other substitutes are not verified but maintain functional compatibility based on parametric specifications.

Frequently Asked Questions (FAQ)

Q: Can 24AA014H-I/P replace AT24C01-10PI-2.5 in existing designs?

A: Yes. 24AA014H-I/P is parametrically equivalent across all critical specifications: 1Kbit memory size, I2C interface, 400 kHz clock frequency, 900 ns access time, 8-DIP package, and -40°C to 85°C operating temperature. The wider supply voltage range (1.7V ~ 5.5V) encompasses the original 2.5V ~ 5.5V specification. The improved 5 ms write cycle time represents enhanced performance. ROHS3 compliance and active product status provide regulatory and availability advantages.

Q: What is the difference between 24LC014-I/P and 24LC01BH-I/P?

A: Both parts are parametrically identical across all provided specifications: 1Kbit memory, I2C interface, 400 kHz frequency, 900 ns access time, 5 ms write cycle time, 2.5V ~ 5.5V supply voltage, 8-DIP package, and -40°C to 85°C operating temperature. Both are ROHS3 compliant and active products. Selection between these parts is based on inventory availability and supplier preference.

Q: Why do some substitutes have 5 ms write cycle time while others have 10 ms?

A: Write cycle time is a specified performance characteristic provided by the manufacturer. Parts with 5 ms write cycle time (24AA014H-I/P, 24LC014-I/P, 24LC01BH-I/P) offer faster write operations compared to parts with 10 ms cycle time (24LC21-I/P, 24LC21A-I/P, 24LCS21A-I/P). Both specifications are compatible with the original AT24C01-10PI-2.5 application requirements. Selection depends on application timing constraints.

Q: Are all substitute parts available in the same 8-DIP through-hole package?

A: Yes. All substitute parts listed are packaged in 8-DIP (0.300", 7.62mm) through-hole configuration, matching the original AT24C01-10PI-2.5 package specification. This ensures direct mechanical and electrical compatibility on printed circuit boards without layout modifications.

Q: What is the significance of ROHS3 compliance for these parts?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive, restricting the use of specific hazardous materials in electrical and electronic equipment. All substitute parts are ROHS3 compliant, whereas the original AT24C01-10PI-2.5 is RoHS non-compliant. This compliance status is critical for products destined for markets with environmental regulations.

Q: Can 24LC21A-I/P and 24LCS21A-I/P be used interchangeably?

A: Both parts are parametrically equivalent across all provided specifications: 1Kbit memory, I2C interface, 400 kHz frequency, 900 ns access time, 10 ms write cycle time, 2.5V ~ 5.5V supply voltage, 8-DIP package, and -40°C to 85°C operating temperature. Both are ROHS3 compliant and active products. The primary difference is that 24LC21A-I/P is verified as programmable through DiGi-Electronics, while 24LCS21A-I/P is not verified. Selection depends on programmability verification requirements for your application.

Q: Is the 1.7V minimum supply voltage of 24AA014H-I/P a concern for 2.5V applications?

A: No. The 1.7V ~ 5.5V supply voltage range of 24AA014H-I/P fully encompasses the 2.5V ~ 5.5V operating window of the original part. The wider range indicates the part operates reliably at lower voltages, providing additional design flexibility without compromising compatibility with existing 2.5V ~ 5.5V specifications.