AT93C56-10SC-2.7 Equivalent & Substitute Parts

Part Overview

The AT93C56-10SC-2.7 is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring a 3-Wire Serial interface with 2 MHz clock frequency and 8-SOIC surface mount packaging. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The device operates across a 2.7V to 5.5V supply voltage range with a 10ms write cycle time and supports 256 x 8 or 128 x 16 memory organization.

Substiute Parts

AT93C56-10SC-2.7

Microchip TechnologyIn Stock: 3835AT93C56-10SC-2.7 Datasheet

Current PartRFQ

M93C56-RMN3TP/K

STMicroelectronicsIn Stock: 5201M93C56-RMN3TP/K Datasheet

MFR RecommendedRFQ

M93C56-RMN6TP

STMicroelectronicsIn Stock: 25210M93C56-RMN6TP Datasheet

MFR RecommendedRFQ

M93C56-WMN6P

STMicroelectronicsIn Stock: 5000396M93C56-WMN6P Datasheet

MFR RecommendedRFQ

M93C56-WMN6TP

STMicroelectronicsIn Stock: 41180M93C56-WMN6TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT93C56-10SC-2.7 is based on the following critical parameters that must align for functional compatibility:

Core Compatibility Criteria:

• Memory Size: 2Kbit (fixed requirement)
• Memory Format: EEPROM (fixed requirement)
• Memory Organization: 256 x 8, 128 x 16 (fixed requirement)
• Package / Case: 8-SOIC (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)

Interface Compatibility: The AT93C56-10SC-2.7 uses a 3-Wire Serial interface. Substitute parts employ Microwire interface, which is functionally compatible with 3-Wire Serial protocols for this memory class.

Electrical Compatibility:

• Voltage Supply: Substitute parts support 1.8V ~ 5.5V or 2.5V ~ 5.5V ranges, which encompass the original 2.7V ~ 5.5V requirement
• Clock Frequency: Substitute parts operate at 1 MHz or 2 MHz, meeting or exceeding the original 2 MHz specification
• Write Cycle Time: Substitute parts feature 5ms write cycle time, which is faster than the original 10ms specification

All four substitute parts from STMicroelectronics meet these core compatibility requirements while offering improved specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

All four STMicroelectronics M93C56 variants provide functional substitution for the obsolete AT93C56-10SC-2.7 while offering significant advantages:

M93C56-RMN3TP/K is recommended for applications requiring the widest operating temperature range (-40°C to 125°C) and lowest supply voltage threshold (1.8V). This part carries AEC-Q100 automotive qualification and is verified for DiGi-Electronics programmability. It is available in Cut Tape and Digi-Reel packaging with 5,100 units in stock.

M93C56-RMN6TP operates at 1 MHz clock frequency, suitable for applications where reduced clock speed is acceptable. It provides -40°C to 85°C temperature range and 1.8V minimum supply voltage. This variant offers the highest inventory availability at 25,200 units in Tape & Reel packaging.

M93C56-WMN6P and M93C56-WMN6TP both operate at 2 MHz, matching the original part's clock frequency. Both support 2.5V to 5.5V supply voltage range and -40°C to 85°C operating temperature. M93C56-WMN6P is packaged in Tube format with 5,000,300 units available. M93C56-WMN6TP is available in Cut Tape and Digi-Reel packaging with 41,080 units in stock and verified DiGi-Electronics programmability.

All substitute parts are ROHS3 compliant and REACH unaffected, addressing regulatory requirements not met by the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Why is the AT93C56-10SC-2.7 obsolete and what are the implications?

A: The AT93C56-10SC-2.7 is classified as obsolete by Microchip Technology, meaning it is no longer manufactured or supported. New designs must transition to active alternatives. The STMicroelectronics M93C56 series provides direct functional equivalents with improved specifications and regulatory compliance.

Q: Are the Microwire interface substitute parts compatible with 3-Wire Serial designs?

A: Yes. Microwire is a superset protocol compatible with 3-Wire Serial communication for EEPROM memory devices in this class. The M93C56 variants support the same pin configuration and signal timing as the original AT93C56-10SC-2.7, enabling direct substitution without circuit redesign.

Q: What is the difference between the four M93C56 substitute options?

A: The primary differences are clock frequency (1 MHz vs. 2 MHz), supply voltage range (1.8V vs. 2.5V minimum), operating temperature range (-40°C to 125°C vs. -40°C to 85°C), and packaging format (Tube, Tape & Reel, or Cut Tape). All four meet the core 2Kbit EEPROM 8-SOIC requirements.

Q: Which substitute part should I select for new production?

A: Selection depends on application requirements. For automotive or extended temperature applications, M93C56-RMN3TP/K is qualified to AEC-Q100. For standard industrial applications matching the original 2 MHz specification, M93C56-WMN6TP or M93C56-WMN6P are suitable. For cost-optimized designs where 1 MHz operation is acceptable, M93C56-RMN6TP offers maximum inventory availability.

Q: Are all substitute parts RoHS compliant?

A: Yes. All four M93C56 variants are ROHS3 compliant, addressing environmental and regulatory requirements not met by the RoHS non-compliant AT93C56-10SC-2.7.

Q: What packaging options are available for the substitute parts?

A: M93C56-RMN3TP/K and M93C56-WMN6TP are available in Cut Tape and Digi-Reel formats. M93C56-RMN6TP is supplied in Tape & Reel. M93C56-WMN6P is available in Tube packaging. Select based on production volume and assembly line requirements.

Q: Do the substitute parts have faster write cycle times?

A: Yes. All M93C56 variants feature 5ms write cycle time compared to the original 10ms specification, providing improved performance for write-intensive applications.