AT27C010-15JC EPROM Equivalent & Substitute Parts

Part Overview

The AT27C010-15JC is a 1Mbit parallel EPROM (Erasable Programmable Read-Only Memory) manufactured by Microchip Technology in a 32-PLCC package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and component procurement. The part operates with a 150 ns access time and is designed for applications requiring non-volatile memory storage in embedded systems and legacy equipment.

Substiute Parts

AT27C010-15JC

Microchip TechnologyIn Stock: 2251AT27C010-15JC Datasheet

Current PartRFQ

AT27C010-70JU

Microchip TechnologyIn Stock: 2331AT27C010-70JU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT27C010-15JC is determined by strict adherence to the following electrical and mechanical parameters:

Critical Compatibility Parameters:

• Memory capacity: 1Mbit (128K x 8 organization)
• Memory interface: Parallel
• Package type: 32-PLCC (13.97x11.43mm)
• Voltage supply range: 4.5V ~ 5.5V
• Mounting type: Surface Mount

Performance Considerations:

• Access time must be equal to or faster than the original 150 ns specification
• Operating temperature range may be extended in substitute parts without affecting backward compatibility

The AT27C010-70JU qualifies as a direct substitute, meeting all critical electrical and mechanical parameters while offering improved access time (70 ns) and extended operating temperature range (-40°C ~ 85°C).

Parameter Comparison

Engineering Selection Recommendations

The AT27C010-70JU is the qualified substitute for the AT27C010-15JC based on the following factors:

Electrical Compatibility: Both devices operate within identical voltage supply ranges (4.5V ~ 5.5V) and maintain the same memory capacity, organization, and parallel interface architecture. The substitute part's faster access time (70 ns versus 150 ns) provides performance margin without introducing compatibility issues.

Mechanical Compatibility: Both parts utilize the 32-PLCC package with identical physical dimensions (13.97 x 11.43mm) and surface mount configuration, ensuring direct PCB footprint compatibility.

Product Status and Compliance: The AT27C010-70JU holds Active product status, ensuring ongoing availability and manufacturing support. The substitute achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This compliance improvement is advantageous for new designs and procurement in regulated markets.

Temperature Range Extension: The substitute part's extended operating temperature range (-40°C ~ 85°C) provides broader environmental capability compared to the original specification (0°C ~ 70°C).

Frequently Asked Questions (FAQ)

Q: Can the AT27C010-70JU be used as a direct replacement for the AT27C010-15JC?

A: Yes. Both devices share identical memory capacity (1Mbit), organization (128K x 8), parallel interface, voltage supply range (4.5V ~ 5.5V), and 32-PLCC package configuration. The substitute part's faster access time and extended temperature range do not compromise backward compatibility.

Q: What is the significance of the access time difference (150 ns vs. 70 ns)?

A: Access time defines the maximum delay from address input to valid data output. The AT27C010-70JU's faster access time (70 ns) meets or exceeds the timing requirements of any system designed for the 150 ns AT27C010-15JC, providing performance margin without requiring system redesign.

Q: Are there packaging differences between these parts?

A: No. Both the AT27C010-15JC and AT27C010-70JU use the 32-PLCC (J-Lead) package with identical physical dimensions (13.97 x 11.43mm). PCB footprints and mounting procedures remain unchanged.

Q: What does the product status change from Obsolete to Active mean for procurement?

A: The AT27C010-70JU's Active status indicates current manufacturing and ongoing availability through authorized distributors. The AT27C010-15JC's Obsolete status indicates discontinued production, making the substitute necessary for new procurement and system support.

Q: Does RoHS3 compliance affect electrical performance?

A: No. RoHS3 compliance reflects manufacturing process and material composition standards, not electrical or functional performance. The compliance improvement in the substitute part is beneficial for regulatory adherence and long-term supply chain stability.