AT27C010-70PC Equivalent & Substitute Parts

Part Overview

The AT27C010-70PC is a 1Mbit parallel EPROM (Erasable Programmable Read-Only Memory) manufactured by Microchip Technology in a 32-DIP package with 70 ns access time. This part is classified as obsolete, which necessitates identification of equivalent substitute components for ongoing system support and new designs. The AT27C010 series remains functionally relevant for legacy system maintenance and embedded applications requiring non-volatile parallel memory storage.

Substiute Parts

AT27C010-70PC

Microchip TechnologyIn Stock: 2081AT27C010-70PC Datasheet

Current PartRFQ

AT27C010-70PU

Microchip TechnologyIn Stock: 3795AT27C010-70PU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT27C010-70PC is determined by the following critical parameters:

• Memory capacity (1Mbit) and organization (128K x 8)
• Parallel interface architecture
• Access time specification (70 ns)
• Supply voltage range (4.5V ~ 5.5V)
• Physical package format (32-DIP)
• Through-hole mounting compatibility

The AT27C010-70PU qualifies as a direct substitute based on identical electrical specifications and package configuration. Both parts share the same base product number (AT27C010), memory capacity, interface type, and physical dimensions. The primary distinction lies in packaging format (tube vs. unspecified for the main part) and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The AT27C010-70PU is the direct functional equivalent for the AT27C010-70PC. Selection of the substitute part is supported by:

• Identical electrical and memory specifications
• Matching package and pinout configuration
• Active product status with verified programmability
• ROHS3 compliance certification
• Extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C)
• Higher inventory availability (3709 units vs. 1976 units)

The AT27C010-70PU accommodates a broader thermal operating window, making it suitable for applications with extended temperature requirements. Both parts maintain identical supply voltage specifications and parallel interface architecture, ensuring direct socket compatibility in existing designs.

Frequently Asked Questions (FAQ)

Q: Can AT27C010-70PU replace AT27C010-70PC in existing designs?

A: Yes. Both parts share identical memory capacity, organization, access time, supply voltage, and 32-DIP package configuration. Direct socket substitution is supported without circuit modification.

Q: What is the difference in operating temperature range?

A: The AT27C010-70PC operates from 0°C to 70°C, while the AT27C010-70PU operates from -40°C to 85°C. The substitute part supports extended temperature operation, making it suitable for industrial and automotive applications requiring broader thermal specifications.

Q: Are there packaging differences between these parts?

A: Both parts use identical 32-DIP (0.600", 15.24mm) through-hole packages. The AT27C010-70PU is supplied in tube packaging, while the AT27C010-70PC packaging format is unspecified. Physical dimensions and pinout are identical.

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

A: The AT27C010-70PC is classified as obsolete, indicating discontinued production. The AT27C010-70PU maintains active product status with current manufacturing support and verified programmability certification.

Q: Does RoHS compliance affect functional compatibility?

A: No. RoHS compliance is a manufacturing and environmental standard. The AT27C010-70PU's ROHS3 certification indicates compliance with current regulatory requirements and does not alter electrical or functional characteristics relative to the non-compliant AT27C010-70PC.

Q: Are both parts suitable for new designs?

A: The AT27C010-70PU is recommended for new designs due to active product status and current compliance certifications. The AT27C010-70PC, being obsolete, is suitable only for legacy system maintenance and replacement applications.