AT24C01-10SC Equivalent & Substitute Parts

Part Overview

The AT24C01-10SC is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 8-SOIC surface mount packaging. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The part operates within a 4.5V to 5.5V supply voltage range with access time of 900 ns and a 10ms write cycle time.

Substiute Parts

AT24C01-10SC

Microchip TechnologyIn Stock: 15219AT24C01-10SC Datasheet

Current PartRFQ

24AA01/SN

Microchip TechnologyIn Stock: 4141124AA01/SN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT24C01-10SC is determined by the following critical parameters:

• Memory capacity of 1Kbit with 128 x 8 organization
• I2C serial interface protocol at 400 kHz operation
• 8-SOIC surface mount package with identical 0.154" (3.90mm) width
• Non-volatile EEPROM technology classification
• Compatible supply voltage range overlap

The substitute part 24AA01/SN meets all these core requirements. While timing characteristics (access time and write cycle time) differ between the main part and substitute, both devices maintain functional compatibility within the I2C protocol specification and identical memory architecture.

Parameter Comparison

Engineering Selection Recommendations

The 24AA01/SN is a direct functional substitute for the AT24C01-10SC based on matching memory capacity, interface protocol, package geometry, and operating temperature range. The primary advantage of selecting 24AA01/SN is its active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with current manufacturing standards. The AT24C01-10SC obsolete status creates supply chain risk and potential regulatory constraints for new designs.

Timing parameter differences between the devices do not prevent substitution. The 24AA01/SN exhibits slower access time (3500 ns versus 900 ns) but faster write cycle time (5 ms versus 10 ms). Both devices operate within I2C protocol specifications and maintain identical memory organization and interface characteristics. The extended supply voltage range of 24AA01/SN (1.7V to 5.5V) provides additional operational flexibility compared to the main part's 4.5V to 5.5V range.

Frequently Asked Questions (FAQ)

Q: Can 24AA01/SN replace AT24C01-10SC in existing designs?

A: Yes. Both devices share identical memory capacity (1Kbit), memory organization (128 x 8), I2C interface protocol, clock frequency (400 kHz), package type (8-SOIC), and operating temperature range (0°C to 70°C). The timing parameter differences do not prevent functional substitution within I2C protocol constraints.

Q: What are the timing differences between these parts?

A: AT24C01-10SC has 900 ns access time and 10 ms write cycle time. 24AA01/SN has 3500 ns access time and 5 ms write cycle time. The slower access time of 24AA01/SN is acceptable for I2C serial communication applications. The faster write cycle time of 24AA01/SN is advantageous for write-intensive operations.

Q: Are the packages physically identical?

A: Yes. Both devices use 8-SOIC surface mount packaging with 0.154" (3.90mm) width. PCB footprints and assembly processes are identical.

Q: What is the supply voltage compatibility?

A: AT24C01-10SC operates at 4.5V to 5.5V. 24AA01/SN operates at 1.7V to 5.5V. The 24AA01/SN can operate across the full range of the original part and extends to lower voltages, providing broader system compatibility.

Q: Why is product status important for this substitution?

A: AT24C01-10SC is obsolete, creating supply availability risk and potential discontinuation of manufacturing. 24AA01/SN is active, ensuring continued availability and manufacturing support. For new designs or production continuity, the active status of 24AA01/SN is a critical advantage.

Q: Does 24AA01/SN meet current regulatory requirements?

A: Yes. 24AA01/SN is ROHS3 compliant. AT24C01-10SC is RoHS non-compliant. For applications requiring regulatory compliance with current environmental standards, 24AA01/SN is the appropriate selection.