AT24C01-10PI-2.7 Equivalent & Substitute Parts

Part Overview

The AT24C01-10PI-2.7 is a 1Kbit EEPROM memory IC with I2C interface operating at 400 kHz, manufactured by Microchip Technology. This component features 128 x 8 memory organization in an 8-DIP through-hole package. The part is currently listed as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations. Equivalent parts must maintain identical memory capacity, interface protocol, and physical packaging while meeting current supply chain availability.

Substiute Parts

AT24C01-10PI-2.7

Microchip TechnologyIn Stock: 5258AT24C01-10PI-2.7 Datasheet

Current PartRFQ

24AA014H-I/P

Microchip TechnologyIn Stock: 233124AA014H-I/P Datasheet

DirectRFQ

24LC01B-I/P

Microchip TechnologyIn Stock: 1031124LC01B-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution validity for the AT24C01-10PI-2.7 is determined by strict adherence to the following parameters:

• Memory capacity must equal 1Kbit with 128 x 8 organization
• I2C interface protocol at 400 kHz operation
• 8-DIP through-hole package (0.300", 7.62mm)
• Operating temperature range of -40°C to 85°C
• Supply voltage compatibility within specified ranges

The substitute parts listed below meet all core functional and physical requirements. Variations in access time, write cycle time, and supply voltage ranges are permissible provided they do not restrict system operation within the original design parameters.

Parameter Comparison

Engineering Selection Recommendations

Both 24AA014H-I/P and 24LC01B-I/P serve as functional equivalents to the obsolete AT24C01-10PI-2.7. Selection between these substitutes should be based on the following criteria:

The 24LC01B-I/P is designated as the manufacturer-recommended substitute and carries verified programmability status. This part maintains active product status with the highest current inventory availability (10,300 pcs). Both substitute parts achieve ROHS3 compliance, addressing environmental regulatory requirements that the original part does not meet.

The 24AA014H-I/P offers extended lower supply voltage operation (1.7V minimum) and faster write cycle time (5ms versus 10ms on the original), providing additional design flexibility for low-power applications. This part is also ROHS3 compliant with active product status.

Both substitutes operate within the original temperature range and maintain identical memory capacity, organization, and I2C interface specifications. The choice between them depends on specific application requirements regarding supply voltage range and write performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can 24AA014H-I/P and 24LC01B-I/P be used interchangeably with AT24C01-10PI-2.7?

A: Both parts are functionally equivalent for applications requiring 1Kbit I2C EEPROM with 400 kHz operation in 8-DIP through-hole packaging. Pin configuration and memory organization are identical. Differences in access time and write cycle time do not prevent substitution in standard applications.

Q: What is the primary reason for substituting the AT24C01-10PI-2.7?

A: The AT24C01-10PI-2.7 is obsolete. Both substitute parts maintain active product status with current manufacturing and supply availability.

Q: Are there supply voltage compatibility concerns when substituting?

A: The original part operates at 2.7V to 5.5V. The 24AA014H-I/P extends the lower limit to 1.7V, while 24LC01B-I/P operates at 2.5V to 5.5V. Both ranges encompass the original specification, ensuring compatibility in existing designs.

Q: Does the 8-DIP package remain the same across all three parts?

A: Yes. All three parts use identical 8-DIP (0.300", 7.62mm) through-hole packaging with the same pin configuration, enabling direct board-level substitution.

Q: What is the significance of RoHS compliance differences?

A: The original AT24C01-10PI-2.7 is RoHS non-compliant. Both substitutes achieve ROHS3 compliance, meeting current environmental and regulatory standards for new designs and manufacturing processes.

Q: How do write cycle times differ, and does this affect substitution?

A: The original part specifies 10ms write cycle time. Both substitutes reduce this to 5ms, providing faster write operations. This improvement does not create compatibility issues and benefits overall system performance.