BR25H640FVT-2CE2 Equivalent & Substitute Parts

Part Overview

The BR25H640FVT-2CE2 is a 64Kbit EEPROM memory IC manufactured by Rohm Semiconductor, featuring SPI interface with 10 MHz clock frequency and automotive-grade qualification (AEC-Q100). This non-volatile memory device is designed for applications requiring reliable data storage in harsh operating environments. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified based on matching core electrical and mechanical specifications: 64Kbit capacity, 8K x 8 memory organization, SPI interface, 8-TSSOP package, and compatible voltage supply ranges. Alternative sources ensure design flexibility and supply chain continuity while maintaining functional equivalence.

Substiute Parts

BR25H640FVT-2CE2

Rohm SemiconductorIn Stock: 1102BR25H640FVT-2CE2 Datasheet

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25AA640AT-I/ST

Microchip TechnologyIn Stock: 594025AA640AT-I/ST Datasheet

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25LC640AT-I/ST

Microchip TechnologyIn Stock: 1525825LC640AT-I/ST Datasheet

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25LC640AX-I/ST

Microchip TechnologyIn Stock: 125225LC640AX-I/ST Datasheet

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M95640-DRDW3TP/K

STMicroelectronicsIn Stock: 17613M95640-DRDW3TP/K Datasheet

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M95640-WDW6TP

STMicroelectronicsIn Stock: 53687M95640-WDW6TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory parameters:

• Memory capacity: 64Kbit (8K x 8 organization)
• Interface protocol: SPI
• Package: 8-TSSOP surface mount
• Voltage supply compatibility: minimum 2.5V support
• Temperature range: minimum -40°C to 85°C support

The identified substitute parts meet these core requirements. Variations in clock frequency (10 MHz vs. 20 MHz), write cycle time (4ms vs. 5ms), and maximum temperature rating (85°C vs. 125°C) represent performance differences that do not prevent functional substitution in applications designed within the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

For automotive applications requiring AEC-Q100 qualification and extended temperature operation (-40°C to 125°C), the M95640-DRDW3TP/K from STMicroelectronics provides direct functional equivalence with enhanced clock frequency (20 MHz) and identical write cycle time (4ms). This part maintains automotive-grade certification and supports the full voltage supply range.

For standard industrial and consumer applications where automotive qualification is not required, the Microchip Technology 25LC640AT-I/ST and 25LC640AX-I/ST offer cost-effective alternatives with matching voltage supply range (2.5V ~ 5.5V) and identical clock frequency (10 MHz). These parts are suitable for applications operating within -40°C to 85°C temperature range.

The Microchip 25AA640AT-I/ST extends voltage supply compatibility to 1.8V minimum, enabling use in low-voltage applications, though it operates within the -40°C to 85°C temperature window.

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and identical memory organization (8K x 8) and package footprint (8-TSSOP, 0.173" × 4.40mm).

Frequently Asked Questions (FAQ)

Q: Can the M95640-DRDW3TP/K replace the BR25H640FVT-2CE2 in automotive applications?

A: Yes. Both parts carry AEC-Q100 automotive qualification, support the full operating temperature range (-40°C to 125°C), and maintain identical 64Kbit capacity with SPI interface. The M95640-DRDW3TP/K operates at 20 MHz clock frequency compared to 10 MHz, which represents improved performance without compatibility issues.

Q: What is the difference between 25LC640AT-I/ST and 25AA640AT-I/ST?

A: Both are Microchip 64Kbit SPI EEPROM devices in 8-TSSOP package. The primary difference is voltage supply range: 25LC640AT-I/ST supports 2.5V ~ 5.5V (matching the main part), while 25AA640AT-I/ST supports 1.8V ~ 5.5V. Both operate within -40°C to 85°C temperature range.

Q: Are packaging differences between Tape & Reel and Cut Tape & Digi-Reel significant for substitution?

A: Packaging format affects supply chain and handling but does not impact electrical or mechanical compatibility. The 8-TSSOP footprint and pin configuration remain identical across all packaging options. Selection should be based on procurement requirements and assembly processes.

Q: Can I use a substitute part with higher clock frequency (20 MHz) in a design specified for 10 MHz?

A: Yes. Higher clock frequency represents enhanced performance capability. A 20 MHz device operates correctly in applications designed for 10 MHz operation. The SPI interface and memory organization remain functionally identical.

Q: What temperature range should I consider for non-automotive applications?

A: For applications not requiring automotive qualification, the Microchip 25LC640 series operates within -40°C to 85°C, which covers most industrial and consumer temperature requirements. Verify your specific application temperature profile against this range.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), matching the environmental and regulatory status of the BR25H640FVT-2CE2.