S-25A256B0A-J8T2U3

Overview

The S-25A256B0A-J8T2U3 is a SPI serial EEPROM with 256 K-bit capacity (32768 words x 8-bit). It operates at 2.5 V to 5.5 V and supports clock frequencies up to 5.0 MHz. The device features page write capability of 64 bytes per page and sequential read functions. It includes software and hardware write protect options covering 25%, 50%, or 100% of the memory area. Endurance reaches 10^6 cycles at +25°C and 3x10^5 cycles at +125°C, with data retention of 100 years at +25°C and 50 years at +125°C. It is AEC-Q100 qualified for automotive use.

Feature Summary

• Supports SPI mode (0,0) and (1,1) with sequential read and 64-byte page write capabilities.
• Provides flexible write protection through software bits and hardware WP pin, allowing selection of 25%, 50%, or 100% protected areas.
• Includes built-in low voltage detection circuit that automatically disables writes during power drops to prevent data corruption.
• Features CMOS Schmitt inputs on control pins to enhance noise immunity in automotive environments.

Applications

• Automotive electronic control units requiring high temperature operation up to 125°C
• Data storage for vehicle configuration parameters and calibration data
• Non-volatile memory for system settings in harsh thermal environments

Procurement Notes

Verify AEC-Q100 qualification details directly with ABLIC sales office as specified in the datasheet. Confirm package dimensions and tape/reel specifications match design requirements. Ensure input pins are not left floating during operation to prevent malfunction. Check for specific automotive reliability certifications if required by end-application standards.

Selection Notes

Select this component for applications demanding wide operating temperature ranges and high endurance. Consider the 5.0 MHz maximum clock speed for interface timing compatibility. Evaluate the write protect features against security requirements. Verify power supply stability to utilize the low voltage detection function effectively.

Part Context

This part belongs to the S-25A series of automotive-grade SPI serial EEPROMs designed for 125°C operation. It shares architectural similarities with other S-25A models but offers specific 256 K-bit capacity. The series targets robust performance in automotive electronics where reliability under extreme conditions is critical.

Replacement Considerations

S-25A256B0A-J8T2U3 is a specific variant within the S-25A family. Direct substitutes must match 256 K-bit capacity, SOP-8 package, and automotive grade specifications. Verify pinout compatibility and electrical characteristics before substitution.