FM93C06N Equivalent & Substitute Parts

Part Overview

The FM93C06N is a 256-bit EEPROM memory IC manufactured by onsemi, featuring Microwire serial interface protocol and 8-DIP through-hole packaging. This component operates at 1 MHz clock frequency with a 10ms write cycle time and requires a 4.5V to 5.5V supply voltage. The FM93C06N is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

FM93C06N

onsemiIn Stock: 1221FM93C06N Datasheet

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93AA46B-I/P

Microchip TechnologyIn Stock: 104893AA46B-I/P Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FM93C06N is determined by the following critical parameters:

• Memory interface protocol (Microwire compatibility)
• Package form factor (8-DIP through-hole)
• Pin-to-pin compatibility
• Supply voltage range overlap
• Operating temperature range compatibility

The 93AA46B-I/P from Microchip Technology qualifies as a substitute based on identical Microwire interface protocol, matching 8-DIP package configuration, and compatible through-hole mounting. Both components utilize the same serial communication standard and physical footprint, enabling direct replacement in existing PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

The 93AA46B-I/P is an active product with ROHS3 compliance, addressing the obsolescence status of the FM93C06N. The substitute provides increased memory capacity (1Kbit versus 256bit), faster clock operation (2 MHz versus 1 MHz), and reduced write cycle time (6ms versus 10ms). The 93AA46B-I/P supports a wider supply voltage range (1.8V to 5.5V) and extended operating temperature range (-40°C to 85°C), offering greater design flexibility for new implementations. Both components maintain Microwire protocol compatibility and identical 8-DIP package footprints, ensuring mechanical and electrical interchangeability at the board level.

Frequently Asked Questions (FAQ)

Q: Can the 93AA46B-I/P directly replace the FM93C06N in existing designs?

A: Yes. Both components share identical Microwire serial interface protocol, 8-DIP package configuration, and through-hole mounting. Pin-to-pin compatibility is maintained, allowing direct PCB substitution without layout modifications.

Q: What are the key differences between these components?

A: The 93AA46B-I/P provides 4x greater memory capacity (1Kbit versus 256bit), operates at twice the clock frequency (2 MHz versus 1 MHz), and completes write cycles faster (6ms versus 10ms). The substitute also supports lower minimum supply voltage (1.8V versus 4.5V) and wider operating temperature range (-40°C to 85°C versus 0°C to 70°C).

Q: Is the 93AA46B-I/P suitable for applications requiring the original FM93C06N specifications?

A: The 93AA46B-I/P meets or exceeds all electrical and mechanical parameters of the FM93C06N. Applications designed for the original component will function with the substitute. The increased memory capacity and performance characteristics present no compatibility issues for systems expecting the smaller memory footprint.

Q: What is the significance of the RoHS compliance difference?

A: The FM93C06N is RoHS non-compliant, while the 93AA46B-I/P is ROHS3 compliant. For new designs and applications subject to RoHS regulations, the 93AA46B-I/P is the appropriate selection.

Q: Are there any supply voltage considerations for substitution?

A: The FM93C06N requires 4.5V to 5.5V supply voltage. The 93AA46B-I/P operates across 1.8V to 5.5V. Systems supplying 4.5V to 5.5V will function identically with both components. The substitute enables operation at lower supply voltages if system design permits.