BR25G256-3

Memory IC Overview

The BR25G256-3 is a 256Kbit serial EEPROM featuring an SPI bus interface with a maximum clock frequency of 20MHz. It operates on a single power source ranging from 1.6V to 5.5V and supports a bit format of 32K x 8. The device ensures data retention for over 100 years and endurance exceeding 1 million write cycles, with a self-timed programming cycle of up to 5ms.

Memory IC Feature Summary

• Supports page write mode allowing up to 64 bytes per cycle
• Includes HOLDB terminal for suspending command communications
• Features programmable read-only memory areas via status registers
• Provides multiple hardware and software write protection mechanisms

Memory IC Applications

• Battery-powered electronic devices requiring low standby current
• Industrial systems needing reliable non-volatile data storage
• Automotive electronics demanding high endurance and temperature stability

Memory IC Procurement Notes

Verify the specific package variant (TSSOP-B8, SOP8, DIP-T8, or SOP-J8) against your PCB footprint requirements. Confirm that the supply voltage range of 1.6V to 5.5V aligns with your system design. Ensure compatibility with SPI modes (CPOL, CPHA) set to (0, 0) or (1, 1). Check for any end-of-life notices as this component may be subject to discontinuation.

Memory IC Selection Notes

Select this component when a 256Kbit capacity is required with high-speed SPI communication up to 20MHz. It is suitable for applications needing wide voltage operation from 1.6V to 5.5V. Consider the available package options if space constraints exist. Verify that the 1 million write cycle endurance meets your application's update frequency requirements.

Memory IC Part Context

This part belongs to ROHM's standard Serial EEPROM series designed for general-purpose data storage. It utilizes silicon monolithic integrated circuit technology. The device is not designed for protection against radioactive rays. It is part of a broader family offering various densities and interfaces for diverse embedded memory needs.

Memory IC Replacement Considerations

BR25G256FVT-3MGE2: Same pinout and package, recommended for new designs.

Memory IC FAQ

How does the WPB pin function?

Setting the WPB pin to LOW prohibits all write commands, including the Write Status Register command, providing hardware-level write protection.

What is the purpose of the BP1 and BP0 bits?

These bits in the status register allow users to designate specific blocks of the memory array as read-only, preventing accidental writes to critical data sections.