BR25S128FVT-WE2

Product Overview

The BR25S128FVT-WE2 from Rohm Semiconductor is a surface-mount EEPROM memory IC intended for non-volatile data storage in embedded systems. It provides 128Kbit of memory organized as 16K x 8 and communicates through an SPI interface with a 20 MHz clock frequency. The device operates from a supply voltage range of 1.7V to 5.5V and is specified for ambient temperatures from -40°C to 85°C. Its 8-TSSOP-B package supports surface-mount assembly, making it suitable for compact board layouts where serial EEPROM storage is required.

Key Features

• 128Kbit non-volatile EEPROM memory
• Memory organization of 16K x 8
• SPI serial interface with 20 MHz clock frequency
• Supply voltage range of 1.7V to 5.5V
• Operating temperature range of -40°C to 85°C (TA)
• 5ms write cycle time for word or page writes
• Surface-mount 8-TSSOP-B package with 4.40mm width

Applications

• Configuration data storage in embedded controllers
• Device parameter retention during power-down
• Identification or calibration data storage in electronic modules
• Small non-volatile data logging in battery-powered systems
• Serial storage of identification data in EEPROM-based modules

Design & Procurement Notes

When selecting the BR25S128FVT-WE2, confirm that the host controller supports SPI communication and can operate within the 20 MHz clock specification. The 1.7V to 5.5V supply range allows use with low-voltage logic rails, but the selected rail must remain within this range across the full temperature window. The 8-TSSOP-B surface-mount package requires an appropriate footprint and board layout. Designers should account for the 5ms write cycle time when planning frequent updates to configuration or stored data, and verify that the 16K x 8 memory organization matches the required data structure. The -40°C to 85°C operating range should be checked against the intended ambient environment before finalizing the memory subsystem.