BR95640-WMN6TP EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The BR95640-WMN6TP is a 64Kbit EEPROM memory IC manufactured by Rohm Semiconductor, featuring SPI interface operation at 5 MHz with 8-SOIC surface mount packaging. This device is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this memory interface standard.

Key Parameters

Parameter	Value
Memory Size	64Kbit
Memory Organization	8K x 8
Memory Interface	SPI
Clock Frequency	5 MHz
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Write Cycle Time	5ms
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the BR95640-WMN6TP is determined by the following critical parameters:

Primary Compatibility Criteria:

Memory Size: 64Kbit (8K x 8 organization)
Memory Interface: SPI protocol
Package Type: 8-SOIC form factor
Write Cycle Time: 5ms
Voltage Supply Range: Must encompass or be compatible with 2.5V ~ 5.5V
Operating Temperature: Must support -40°C ~ 85°C minimum
RoHS Compliance: ROHS3 Compliant

Secondary Consideration:

Clock Frequency: The main part operates at 5 MHz. Substitute parts with equal or higher clock frequencies maintain full compatibility. Parts with lower clock frequencies do not qualify as direct substitutes.

Substitute parts are grouped into two categories: direct equivalents (matching all primary criteria) and functional alternatives (meeting core memory and interface requirements with different clock frequencies or voltage ranges).

Parameter Comparison

Part Number	Manufacturer	Memory Size	Clock Frequency	Voltage Supply	Operating Temp	Package	Product Status
BR95640-WMN6TP	Rohm Semiconductor	64Kbit	5 MHz	2.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Obsolete
BR25L640FJ-WE2	Rohm Semiconductor	64Kbit	5 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
BR25S640FJ-WE2	Rohm Semiconductor	64Kbit	20 MHz	1.7V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
25AA640AT-E/SN	Microchip Technology	64Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active
25AA640AT-I/SN	Microchip Technology	64Kbit	10 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
25AA640T-I/SN	Microchip Technology	64Kbit	1 MHz	1.8V ~ 5.5V	-40°C ~ 85°C	8-SOIC	Active
25LC640AT-E/SN	Microchip Technology	64Kbit	10 MHz	2.5V ~ 5.5V	-40°C ~ 125°C	8-SOIC	Active

Engineering Selection Recommendations

Direct Substitutes (Rohm Semiconductor):

BR25L640FJ-WE2 serves as the primary equivalent replacement. This part maintains identical memory capacity, clock frequency, package configuration, and operating temperature range. The extended lower voltage limit (1.8V vs. 2.5V) provides enhanced compatibility with modern low-power applications. Product status is Active with verified programmability certification.

BR25S640FJ-WE2 offers increased clock frequency (20 MHz) while maintaining all other core specifications. This part is suitable for applications requiring higher data throughput. Product status is Active.

Cross-Manufacturer Substitutes (Microchip Technology):

25LC640AT-E/SN and 25AA640AT-E/SN both provide 64Kbit capacity with 10 MHz operation and extended temperature range (-40°C ~ 125°C). These parts are Active status with verified programmability. The 25LC640AT-E/SN maintains the 2.5V lower voltage limit matching the original specification.

25AA640AT-I/SN and 25AA640T-I/SN are Active status alternatives with verified programmability. The 25AA640T-I/SN operates at 1 MHz, suitable for applications with lower frequency requirements.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 rating, and 5ms write cycle time specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower clock frequency than the original BR95640-WMN6TP?

A: Lower clock frequency parts (such as 25AA640T-I/SN at 1 MHz) are not direct substitutes. They function as functional alternatives only if your application does not require the 5 MHz operation speed. System timing and data transfer rates must be re-evaluated.

Q: What is the difference between BR25L640FJ-WE2 and BR25S640FJ-WE2?

A: Both are Rohm Semiconductor products in Active status. The primary difference is clock frequency: BR25L640FJ-WE2 operates at 5 MHz (matching the original), while BR25S640FJ-WE2 operates at 20 MHz. Select based on your application's required data throughput.

Q: Are Microchip 25AA640 and 25LC640 series parts interchangeable?

A: Both series provide 64Kbit SPI EEPROM in 8-SOIC packaging. The 25LC640 series specifies 2.5V minimum supply voltage, while 25AA640 series specifies 1.8V minimum. Select based on your system's voltage supply range. All maintain identical memory organization and interface protocol.

Q: Does the extended temperature range of 25AA640AT-E/SN (-40°C ~ 125°C) affect compatibility?

A: Extended temperature range indicates enhanced thermal capability and does not negatively impact compatibility. This part is suitable for applications requiring operation beyond the standard -40°C ~ 85°C range.

Q: What packaging options are available for these substitutes?

A: All listed substitutes utilize 8-SOIC (0.154", 3.90mm Width) surface mount packaging, maintaining mechanical compatibility with the original BR95640-WMN6TP footprint. Packaging format variations (Tape & Reel, Cut Tape, Tube) do not affect electrical or mechanical fit.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts maintain ROHS3 compliance status, matching the original BR95640-WMN6TP specification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message