AT24C01-10SI EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The AT24C01-10SI is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 8-SOIC surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates within a 4.5V to 5.5V supply voltage range and supports industrial temperature specifications from -40°C to 85°C.

Key Parameters

Parameter	Value
Memory Size	1Kbit
Memory Organization	128 x 8
Memory Interface	I2C
Clock Frequency	400 kHz
Access Time	900 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the AT24C01-10SI are qualified based on the following core parameters: 1Kbit memory capacity, 128 x 8 memory organization, I2C interface protocol, 400 kHz clock frequency, 900 ns access time, 8-SOIC package configuration, and surface mount mounting type. All substitute candidates maintain identical memory specifications and physical packaging dimensions to ensure direct functional replacement in existing circuit designs.

The AT24C01-10SI operates within a 4.5V to 5.5V supply voltage window. Substitute parts meeting this exact voltage specification are classified as direct equivalents. Parts with extended voltage ranges that encompass the 4.5V to 5.5V window are classified as parametric equivalents, as they provide broader operational flexibility while maintaining full compatibility within the original design parameters.

Parameter Comparison

Parameter	AT24C01-10SI	24AA014H-I/SN	24C01C-I/SN
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology
Memory Size	1Kbit	1Kbit	1Kbit
Memory Organization	128 x 8	128 x 8	128 x 8
Memory Interface	I2C	I2C	I2C
Clock Frequency	400 kHz	400 kHz	400 kHz
Access Time	900 ns	900 ns	900 ns
Write Cycle Time	10 ms	5 ms	1 ms
Voltage Supply Range	4.5V ~ 5.5V	1.7V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 24AA014H-I/SN serves as a direct manufacturer substitute with active product status. This part maintains identical core memory specifications and package configuration while offering an extended voltage supply range of 1.7V to 5.5V. The extended lower voltage limit provides operational flexibility for low-power applications while remaining fully compatible within the original 4.5V to 5.5V design window. This part achieves ROHS3 compliance and is currently in active production with confirmed inventory availability.

The 24C01C-I/SN functions as a parametric equivalent with verified programmable status and active product status. This part maintains the exact voltage supply range of 4.5V to 5.5V, matching the original AT24C01-10SI specification. The 24C01C-I/SN achieves ROHS3 compliance and demonstrates superior write cycle performance at 1 millisecond compared to the original 10 millisecond specification. This part is currently in active production with confirmed inventory availability.

Both substitute parts are manufactured by Microchip Technology and maintain identical I2C interface protocols, clock frequencies, access times, operating temperatures, and 8-SOIC package dimensions. Selection between these options depends on application-specific requirements regarding voltage range flexibility and write cycle performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 24AA014H-I/SN replace the AT24C01-10SI in existing designs?

A: Yes. The 24AA014H-I/SN maintains identical memory capacity (1Kbit), memory organization (128 x 8), I2C interface protocol, 400 kHz clock frequency, 900 ns access time, and 8-SOIC package dimensions. The extended voltage range of 1.7V to 5.5V encompasses the original 4.5V to 5.5V specification, ensuring full functional compatibility. Direct PCB substitution is supported without circuit modifications.

Q: Can the 24C01C-I/SN replace the AT24C01-10SI in existing designs?

A: Yes. The 24C01C-I/SN maintains identical memory capacity (1Kbit), memory organization (128 x 8), I2C interface protocol, 400 kHz clock frequency, 900 ns access time, voltage supply range (4.5V to 5.5V), and 8-SOIC package dimensions. Direct PCB substitution is supported without circuit modifications.

Q: What is the primary difference between the two substitute parts?

A: The 24AA014H-I/SN provides an extended voltage supply range of 1.7V to 5.5V, enabling operation in low-power applications. The 24C01C-I/SN maintains the exact original voltage specification of 4.5V to 5.5V and offers faster write cycle performance at 1 millisecond compared to the 24AA014H-I/SN at 5 milliseconds.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the 24AA014H-I/SN and 24C01C-I/SN achieve ROHS3 compliance, whereas the original AT24C01-10SI is RoHS non-compliant. This compliance improvement supports modern manufacturing and environmental regulatory requirements.

Q: Do the substitute parts require any circuit modifications?

A: No. Both substitute parts maintain identical I2C interface protocols, pin configurations, package dimensions (8-SOIC), and operating temperature ranges (-40°C to 85°C). Direct PCB substitution is supported without schematic or layout modifications.

Q: What is the inventory status of these substitute parts?

A: The 24AA014H-I/SN has 1,656 pieces in stock. The 24C01C-I/SN has 1,115 pieces in stock. Both parts are actively manufactured by Microchip Technology.

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