AT28C010-12JC EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The AT28C010-12JC is a 1Mbit parallel EEPROM memory IC manufactured by Microchip Technology, housed in a 32-PLCC package with 120 ns access time. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new design implementations. The part operates within the 4.5V to 5.5V supply voltage range and supports 128K x 8 memory organization with a 10ms write cycle time.

Substiute Parts

AT28C010-12JC

Microchip TechnologyIn Stock: 1440AT28C010-12JC Datasheet

Current PartRFQ

AT28C010-12JU

Microchip TechnologyIn Stock: 1324AT28C010-12JU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT28C010-12JC is determined by strict equivalence across the following critical parameters:

• Memory capacity: 1Mbit
• Memory organization: 128K x 8
• Interface type: Parallel
• Access time: 120 ns
• Write cycle time: 10ms
• Supply voltage range: 4.5V ~ 5.5V
• Package: 32-PLCC (J-Lead)
• Mounting: Surface Mount

The AT28C010-12JU meets all substitution criteria. Both parts share identical electrical specifications, memory architecture, and physical packaging. The primary distinction lies in product status and operating temperature range, which do not affect functional interchangeability in applications designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

The AT28C010-12JU is the direct functional equivalent for the obsolete AT28C010-12JC. Selection of the substitute part is justified by:

• Identical electrical and memory specifications
• Active product status ensuring continued availability
• ROHS3 compliance, meeting current regulatory requirements
• Extended operating temperature range (-40°C to 85°C) providing broader environmental compatibility compared to the original part's 0°C to 70°C range
• Identical physical packaging enabling direct PCB-level substitution

For applications operating within the original temperature specification (0°C to 70°C), the AT28C010-12JU operates within its qualified range. For applications requiring the extended lower temperature capability, the substitute part provides additional operational margin.

Frequently Asked Questions (FAQ)

Q: Can AT28C010-12JU be used as a direct replacement for AT28C010-12JC?

A: Yes. Both parts are electrically and mechanically identical. The AT28C010-12JU is pin-compatible, package-compatible, and functionally equivalent. No circuit modifications are required.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (obsolete vs. active), RoHS compliance level, and operating temperature range. The AT28C010-12JU supports -40°C to 85°C operation, while the AT28C010-12JC is rated for 0°C to 70°C.

Q: Are there packaging differences between these parts?

A: Both parts use 32-PLCC (J-Lead) surface mount packaging with identical physical dimensions (13.97 x 11.43 mm). The AT28C010-12JU is supplied in tube packaging, while the AT28C010-12JC packaging type was not specified.

Q: Does the extended temperature range of AT28C010-12JU affect performance?

A: No. The extended temperature range represents additional qualification, not a change to electrical specifications. Performance within the original 0°C to 70°C range remains identical.

Q: Is the AT28C010-12JU suitable for new designs?

A: Yes. The active product status and ROHS3 compliance make the AT28C010-12JU appropriate for new design implementations requiring 1Mbit parallel EEPROM functionality.