AT24C01A-10PI-1.8 Equivalent & Substitute Parts

Part Overview

The AT24C01A-10PI-1.8 is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface operation at 400 kHz with 900 ns access time. This device is designed for non-volatile data storage applications requiring low-voltage operation across 1.8V to 5.5V supply range. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

AT24C01A-10PI-1.8

Microchip TechnologyIn Stock: 2709AT24C01A-10PI-1.8 Datasheet

Current PartRFQ

24AA014H-I/P

Microchip TechnologyIn Stock: 233124AA014H-I/P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT24C01A-10PI-1.8 is determined by strict equivalence across the following critical parameters:

• Memory capacity: 1Kbit (128 x 8 organization)
• Interface protocol: I2C at 400 kHz operation
• Access time: 900 ns maximum
• Write cycle time: 5 ms
• Package format: 8-DIP through-hole configuration
• Supply voltage compatibility: minimum 1.8V operation capability
• Operating temperature range: -40°C to 85°C

The substitute part 24AA014H-I/P meets all functional and electrical requirements for direct replacement. Both devices share identical memory architecture, interface specifications, and timing characteristics. The primary distinction lies in product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 24AA014H-I/P serves as a direct functional equivalent to the AT24C01A-10PI-1.8 for all electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

For legacy system maintenance: The AT24C01A-10PI-1.8 remains suitable where existing inventory is available and product status does not impose constraints. Current stock availability is 2600 units.

For new designs and ongoing production: The 24AA014H-I/P is the preferred selection due to active product status and ROHS3 compliance certification. This part ensures long-term supply chain viability and regulatory alignment. Current stock availability is 2300 units.

Supply voltage consideration: The 24AA014H-I/P operates at minimum 1.7V versus 1.8V for the AT24C01A-10PI-1.8. Both parts are compatible with standard 3.3V and 5V logic systems. Applications requiring operation below 1.8V should verify the 1.7V minimum specification of the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the 24AA014H-I/P directly replace the AT24C01A-10PI-1.8 in existing PCB designs?

A: Yes. Both parts share identical pinout, package dimensions (8-DIP 0.300"), and electrical interface specifications. No PCB modifications are required for substitution.

Q: What is the significance of the product status difference?

A: The AT24C01A-10PI-1.8 is classified as obsolete, indicating Microchip Technology has discontinued active production and support. The 24AA014H-I/P maintains active status, ensuring continued availability, technical support, and compliance updates.

Q: Are there differences in RoHS compliance between these parts?

A: Yes. The AT24C01A-10PI-1.8 is RoHS non-compliant, while the 24AA014H-I/P is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the 24AA014H-I/P is the appropriate selection.

Q: Do both parts operate at the same I2C clock frequency?

A: Yes. Both the AT24C01A-10PI-1.8 and 24AA014H-I/P operate at 400 kHz I2C clock frequency with identical 900 ns access time and 5 ms write cycle time.

Q: What is the minimum supply voltage difference between these parts?

A: The AT24C01A-10PI-1.8 requires minimum 1.8V supply, while the 24AA014H-I/P operates at minimum 1.7V. Both support the full 5.5V maximum. For applications operating between 1.7V and 1.8V, only the 24AA014H-I/P is suitable.

Q: Are the packaging and mounting types identical?

A: Yes. Both parts use 8-DIP through-hole packaging with 0.300" (7.62mm) body width. Mounting procedures and PCB footprints are identical.