Equivalent & Substitute Parts for AT29C020-10JC (Microchip Technology)

Part Overview

The AT29C020-10JC is a non-volatile FLASH Memory IC with a capacity of 2Mbit organized as 256K x 8 bits, featuring parallel memory interface and a specified access time of 100 ns. Packaged in a 32-PLCC (J-Lead, 13.97x11.43 mm) format for surface mount applications, this part is now listed as "Obsolete." When a component is obsolete, locating suitable equivalent or substitute models is critical for maintaining assembly, repair, and ongoing designs.

Substiute Parts

AT29C020-10JC

Microchip TechnologyIn Stock: 14655AT29C020-10JC Datasheet

Current PartRFQ

SST39VF020-70-4I-NHE

Microchip TechnologyIn Stock: 1966SST39VF020-70-4I-NHE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT29C020-10JC are strictly grouped based on the following parameters:

• Manufacturer category (Memory IC)
• Equivalent 2Mbit (256K x 8) FLASH memory type
• Parallel memory interface
• Surface mount 32-PLCC J-Lead case
• Comparable or improved access/write timing
• Matching or compatible operating voltage range
• Overlapping or greater operating temperature range
• Matching mounting and packaging type

All substitutes share these parameters, ensuring electrical and mechanical compatibility for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The main part (AT29C020-10JC) is listed as "Obsolete" and "RoHS non-compliant." The substitute part (SST39VF020-70-4I-NHE) is "Active" and "ROHS3 Compliant." Both share the same memory organization, interface, and mounting configuration, while differing in voltage supply range, access/write timing, and environmental compliance levels. Selection should be based on product status, RoHS compliance, and certification requirements as indicated.

Frequently Asked Questions (FAQ)

Q1: What are the essential criteria for substituting AT29C020-10JC with another component?
A1: Substitute selection is based on memory type (FLASH), organization (2Mbit, 256K x 8), interface (Parallel), package (32-PLCC J-Lead for surface mount), and compatibility in electrical performance parameters.

Q2: Are there any differences in package size or mounting that affect compatibility?
A2: Both parts use the 32-PLCC J-Lead package for surface mounting. Dimensional differences in supplier device package (13.97x11.43 mm vs. 11.43x13.97 mm) should be compared for fit but share the same basic package code.

Q3: Does the substitute part meet modern environmental compliance standards?
A3: The SST39VF020-70-4I-NHE is "ROHS3 Compliant" and "REACH Unaffected," while AT29C020-10JC is "RoHS non-compliant" and "REACH Unaffected."

Q4: How does differing voltage supply affect engineering compatibility?
A4: The substitute operates at 2.7V ~ 3.6V, whereas the main part operates at 4.5V ~ 5.5V. Compare system voltage requirements prior to selection.

Q5: Is there a significant difference in performance between the main and substitute parts?
A5: The substitute features faster access time (70 ns vs. 100 ns) and improved write cycle time, within the same memory organization and interface category.