Equivalent & Substitute Parts for AT28C64-12SC

Part Overview

The AT28C64-12SC, manufactured by Microchip Technology, is a non-volatile parallel EEPROM memory IC with a capacity of 64Kbit (8K x 8) in a 28-SOIC package. It operates with a supply voltage of 4.5V to 5.5V and has an access time of 120 ns. This device is categorized as Obsolete, creating a requirement to identify suitable alternatives to ensure continuity in designs that use this component. Locating equivalent or substitute EEPROM memory ICs is necessary to match the functional and mechanical characteristics specified for the AT28C64-12SC.

Substiute Parts

AT28C64-12SC

Microchip TechnologyIn Stock: 1098AT28C64-12SC Datasheet

Current PartRFQ

AT28HC64BF-12SU

Microchip TechnologyIn Stock: 2211AT28HC64BF-12SU Datasheet

MFR RecommendedRFQ

X28HC64SIZ-12

Renesas Electronics CorporationIn Stock: 1230X28HC64SIZ-12 Datasheet

MFR RecommendedRFQ

X28HC64SIZ-12T1

Renesas Electronics CorporationIn Stock: 1118X28HC64SIZ-12T1 Datasheet

MFR RecommendedRFQ

X28HC64SZ-12

Renesas Electronics CorporationIn Stock: 1156X28HC64SZ-12 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is based solely on the following explicitly provided and matching key parameters: memory type (EEPROM, non-volatile), memory size (64Kbit, 8K x 8), memory interface (parallel), access time (120 ns), voltage supply range (4.5V ~ 5.5V), mounting type (surface mount), and package/case (28-SOIC 0.295", 7.50mm Width). Only devices matching these parameters have been included as substitutes.

Parameter Comparison

Engineering Selection Recommendations

Selection of substitute EEPROM memory ICs for the AT28C64-12SC can be based on component part status and compliance certifications. The AT28C64-12SC is designated as Obsolete and RoHS non-compliant. Substitute options—AT28HC64BF-12SU, X28HC64SIZ-12, X28HC64SIZ-12T1, and X28HC64SZ-12—are all Active and ROHS3 Compliant. The moisture sensitivity levels (MSL) and operational status should be reviewed for alignment with sourcing and assembly requirements.

Frequently Asked Questions (FAQ)

Q1: What are the primary matching criteria for substituting the AT28C64-12SC EEPROM?
A1: Substitution is based on memory type, memory size, memory organization, parallel interface, access time, supply voltage range, mounting method, and package/case matching.

Q2: Do substitute parts have identical package dimensions and footprints?
A2: All listed substitutes use the 28-SOIC (0.295", 7.50mm Width) surface mount package, matching the AT28C64-12SC.

Q3: Is there any difference in compliance certifications?
A3: The main part is RoHS non-compliant; all substitutes are ROHS3 compliant.

Q4: What are the considerations for moisture sensitivity (MSL)?
A4: The main part and AT28HC64BF-12SU have MSL 2 (1 Year); the Renesas substitutes have MSL 3 (168 Hours). Assembly processes must accommodate these levels.

Q5: Do all substitutes match the electrical parameters strictly provided?
A5: All substitutes match memory type, size, interface, access time, voltage range, mounting, and package. Differences in write cycle time exist but are within the substitution criteria.