AT24C01A-10PI EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The AT24C01A-10PI is a 1Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, designed for I2C serial communication applications operating at 400 kHz. This device features 128 x 8 memory organization with 900 ns access time and is housed in an 8-DIP through-hole package. The AT24C01A-10PI is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support, design updates, and component procurement.

Substiute Parts

AT24C01A-10PI

Microchip TechnologyIn Stock: 729AT24C01A-10PI Datasheet

Current PartRFQ

24AA014H-I/P

Microchip TechnologyIn Stock: 233124AA014H-I/P Datasheet

DirectRFQ

24C01C-I/P

Microchip TechnologyIn Stock: 179824C01C-I/P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT24C01A-10PI is determined by strict equivalence across the following critical parameters: memory size (1Kbit), memory format (EEPROM), memory organization (128 x 8), interface protocol (I2C), clock frequency (400 kHz), access time (900 ns), package type (8-DIP), and mounting method (through hole).

Two substitute parts meet these criteria:

24AA014H-I/P (Direct Manufacturer Substitute): Maintains all core electrical and mechanical specifications. Differs in supply voltage range (1.7V ~ 5.5V versus 4.5V ~ 5.5V), offering broader voltage compatibility. Product status is active with RoHS3 compliance.

24C01C-I/P (Parametric Equivalent): Maintains all core electrical and mechanical specifications. Differs in write cycle time (1 ms versus 5 ms), providing faster write performance. Product status is active with RoHS3 compliance. Supply voltage range matches the original part (4.5V ~ 5.5V).

Parameter Comparison

Engineering Selection Recommendations

24AA014H-I/P is recommended for applications requiring extended supply voltage range compatibility (1.7V ~ 5.5V). This part is active in production with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The broader voltage specification accommodates low-power and battery-operated systems while maintaining full backward compatibility with the original AT24C01A-10PI electrical interface.

24C01C-I/P is recommended for applications where write cycle performance is a design consideration. The 1 ms write cycle time (versus 5 ms in the original part) reduces overall system write latency. This part is active in production with ROHS3 compliance. Supply voltage range matches the original specification (4.5V ~ 5.5V), ensuring direct electrical compatibility in existing designs.

Both substitute parts are manufactured by Microchip Technology, share identical package geometry and pinout, and maintain full I2C protocol compatibility. Selection between these options depends on specific system requirements regarding voltage range or write performance.

Frequently Asked Questions (FAQ)

Q: Can 24AA014H-I/P be used as a direct replacement for AT24C01A-10PI?

A: Yes. The 24AA014H-I/P maintains all core memory specifications (1Kbit, EEPROM, 128 x 8 organization, I2C interface, 400 kHz clock, 900 ns access time) and identical 8-DIP package geometry. The extended supply voltage range (1.7V ~ 5.5V) provides additional flexibility without compromising compatibility.

Q: What is the primary difference between 24AA014H-I/P and 24C01C-I/P?

A: The 24AA014H-I/P offers a wider supply voltage range (1.7V ~ 5.5V), while the 24C01C-I/P provides faster write cycle time (1 ms versus 5 ms). Both maintain identical memory capacity, organization, interface protocol, and package specifications.

Q: Are both substitute parts pin-compatible with the original AT24C01A-10PI?

A: Yes. Both 24AA014H-I/P and 24C01C-I/P use the 8-DIP package with identical pinout and through-hole mounting configuration, enabling direct board-level substitution without layout modifications.

Q: Do the substitute parts meet current regulatory compliance standards?

A: Yes. Both 24AA014H-I/P and 24C01C-I/P are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original AT24C01A-10PI is RoHS non-compliant due to its obsolete status.

Q: Which substitute part should be selected for new designs?

A: For new designs, either part is acceptable based on system requirements. Select 24AA014H-I/P for applications requiring low-voltage operation or battery compatibility. Select 24C01C-I/P for applications prioritizing write performance. Both are active products with established supply chains.

Q: Is the I2C interface protocol identical across all three parts?

A: Yes. All three parts (AT24C01A-10PI, 24AA014H-I/P, and 24C01C-I/P) implement the I2C serial interface at 400 kHz clock frequency with 900 ns access time, ensuring protocol-level compatibility.