93C56BT-I/MC EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93C56BT-I/MC is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol and 8-DFN surface mount packaging. This non-volatile memory device operates at 2 MHz clock frequency with a 2ms write cycle time and is designed for applications requiring persistent data storage in compact form factors. The part is currently in active production status with full RoHS3 compliance and REACH unaffected classification. Substitute parts are identified when equivalent memory capacity, interface protocol, package type, and operating specifications can be maintained while accommodating different voltage supply ranges or packaging formats.

Substiute Parts

93C56BT-I/MC

Microchip TechnologyIn Stock: 79793C56BT-I/MC Datasheet

Current PartRFQ

93LC56BT-I/MC

Microchip TechnologyIn Stock: 373793LC56BT-I/MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93C56BT-I/MC is determined by strict equivalence in the following critical parameters: memory capacity (2Kbit), memory organization (128 x 16), interface protocol (Microwire), clock frequency (2 MHz), physical package type (8-VFDFN Exposed Pad), and surface mount mounting type. The 93LC56BT-I/MC qualifies as a direct substitute because it maintains identical memory specifications, interface characteristics, and package dimensions. Differences in voltage supply range (2.5V ~ 5.5V versus 4.5V ~ 5.5V), write cycle time (6ms versus 2ms), moisture sensitivity level, and packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) do not preclude substitution when the application voltage supply and write timing requirements are compatible with the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 93C56BT-I/MC and 93LC56BT-I/MC maintain active production status with identical RoHS3 compliance and REACH unaffected classification, ensuring regulatory equivalence for applications subject to environmental and hazardous substance restrictions. The 93LC56BT-I/MC provides extended voltage supply range compatibility (2.5V ~ 5.5V) compared to the main part (4.5V ~ 5.5V), making it suitable for applications operating at lower supply voltages. The trade-off is an increased write cycle time of 6ms versus 2ms for the main part. Selection between these parts depends on application-specific requirements: choose the 93C56BT-I/MC when write cycle time of 2ms is mandatory and supply voltage remains within 4.5V ~ 5.5V; select the 93LC56BT-I/MC when lower voltage operation (down to 2.5V) is required and the extended write cycle time is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 93LC56BT-I/MC replace the 93C56BT-I/MC in all applications?

A: Substitution is valid when the application supply voltage operates within the 93LC56BT-I/MC range (2.5V ~ 5.5V) and the write cycle time of 6ms meets system timing requirements. If the application requires the faster 2ms write cycle time of the 93C56BT-I/MC, substitution is not appropriate.

Q: What is the difference between Tape & Reel (TR) and Cut Tape & Digi-Reel® packaging?

A: Both packaging formats contain identical 8-DFN components suitable for surface mount assembly. Tape & Reel is standard continuous reel packaging for high-volume automated pick-and-place operations. Cut Tape & Digi-Reel® provides flexibility for lower-volume or mixed-component orders. The electrical and functional specifications remain unchanged.

Q: Are the 93C56BT-I/MC and 93LC56BT-I/MC pin-compatible?

A: Yes. Both parts use the 8-VFDFN Exposed Pad package with identical pinout and physical dimensions, enabling direct PCB-level substitution without layout modifications.

Q: What does the voltage supply range difference mean for circuit design?

A: The 93C56BT-I/MC requires supply voltage between 4.5V and 5.5V. The 93LC56BT-I/MC operates across 2.5V to 5.5V. If your circuit operates at voltages below 4.5V (such as 3.3V systems), only the 93LC56BT-I/MC is electrically compatible.

Q: How does write cycle time affect system performance?

A: Write cycle time specifies the duration required to complete a single word or page write operation. The 93C56BT-I/MC completes writes in 2ms, while the 93LC56BT-I/MC requires 6ms. Applications with strict timing constraints or high write frequency may require the faster 93C56BT-I/MC.

Q: Are both parts suitable for industrial temperature applications?

A: Yes. Both the 93C56BT-I/MC and 93LC56BT-I/MC operate across the -40°C to 85°C temperature range, meeting industrial and extended commercial temperature specifications.