AT93C56W-10SC Equivalent & Substitute Parts

Part Overview

The AT93C56W-10SC is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring 3-Wire Serial interface with 2 MHz clock frequency and 8-SOIC surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates within a 4.5V to 5.5V supply voltage range and supports 256 x 8 or 128 x 16 memory organization with a 10ms write cycle time.

Substiute Parts

AT93C56W-10SC

Microchip TechnologyIn Stock: 1114AT93C56W-10SC Datasheet

Current PartRFQ

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 AT93C56W-10SC is based on the following critical parameters that must align for functional compatibility:

Core Compatibility Criteria:

• Memory capacity: 2Kbit (fixed requirement)
• Memory organization: 256 x 8 or 128 x 16 (fixed requirement)
• Package type: 8-SOIC form factor (fixed requirement)
• Surface mount mounting type (fixed requirement)
• Non-volatile EEPROM technology (fixed requirement)

Interface Compatibility: The AT93C56W-10SC uses 3-Wire Serial interface. Substitute parts employ Microwire interface, which is a compatible serial protocol for this memory class. Both protocols support the same memory organization and pin configuration within the 8-SOIC package.

Electrical Parameter Flexibility:

• Clock frequency: Substitute parts operate at 1 MHz or 2 MHz (both acceptable for 2 MHz-rated original)
• Write cycle time: Substitute parts feature 5ms (faster than original 10ms specification)
• Supply voltage: Substitute parts support wider ranges (1.8V ~ 5.5V or 2.5V ~ 5.5V), encompassing the original 4.5V ~ 5.5V requirement
• Operating temperature: Substitute parts support -40°C ~ 85°C (wider than original 0°C ~ 70°C)

All three substitute parts meet or exceed the electrical and mechanical requirements of the original component.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The AT93C56W-10SC is obsolete. All three substitute parts are active products from STMicroelectronics, ensuring long-term availability and supply chain continuity.

Compliance & Certification: All substitute parts are ROHS3 compliant, whereas the original part is non-compliant. For applications requiring RoHS compliance, any of the three substitutes satisfy regulatory requirements. All parts share identical REACH and ECCN classifications with the original component.

Programmability Verification: M93C56-RMN6TP and M93C56-WMN6TP are verified as programmable through DiGi-Electronics. M93C56-WMN6P programmability has not been verified but does not preclude its use in applications where programmability is not a requirement.

Packaging Selection:

• M93C56-RMN6TP: Tape & Reel packaging for high-volume automated assembly
• M93C56-WMN6P: Tube packaging for standard distribution
• M93C56-WMN6TP: Cut Tape & Digi-Reel® for flexible quantity requirements

Performance Enhancement: All substitutes provide faster write cycle times (5ms versus 10ms) and wider operating temperature ranges (-40°C ~ 85°C versus 0°C ~ 70°C), offering improved performance margins for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can M93C56 parts directly replace the AT93C56W-10SC?

A: Yes. Both the original and substitute parts share identical 2Kbit capacity, 256 x 8 / 128 x 16 memory organization, and 8-SOIC package form factor. The Microwire interface used by M93C56 parts is compatible with 3-Wire Serial protocol requirements for this memory class.

Q: What is the difference between the three substitute parts?

A: The primary differences are packaging format and clock frequency. M93C56-RMN6TP operates at 1 MHz and comes in Tape & Reel format. M93C56-WMN6P and M93C56-WMN6TP both operate at 2 MHz, matching the original clock frequency, with M93C56-WMN6P supplied in Tube format and M93C56-WMN6TP in Cut Tape & Digi-Reel® format. All three share identical electrical specifications otherwise.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three M93C56 substitutes are ROHS3 compliant, whereas the original AT93C56W-10SC is non-compliant. This makes the substitutes suitable for applications with RoHS requirements.

Q: What is the voltage supply compatibility?

A: The original part requires 4.5V ~ 5.5V. M93C56-RMN6TP supports 1.8V ~ 5.5V, and M93C56-WMN6P and M93C56-WMN6TP support 2.5V ~ 5.5V. All substitutes fully encompass the original voltage range, with M93C56-RMN6TP offering the widest compatibility window.

Q: Do the substitutes support the same operating temperature range?

A: The original part operates from 0°C ~ 70°C. All three substitutes operate from -40°C ~ 85°C, providing a significantly wider temperature range suitable for industrial and extended-temperature applications.

Q: Which substitute should I select for high-volume production?

A: M93C56-RMN6TP in Tape & Reel format is optimized for automated assembly processes in high-volume manufacturing environments.

Q: Are there inventory considerations for these substitutes?

A: M93C56-WMN6P has the highest inventory availability (5,000,300 pcs), followed by M93C56-RMN6TP (25,200 pcs) and M93C56-WMN6TP (41,080 pcs). All three maintain substantial stock levels for production requirements.