BR93A66RFJ-WME2

Memory IC Overview

The BR93A66RFJ-WME2 is an automotive-grade Microwire BUS serial EEPROM manufactured by ROHM Semiconductor. It features a storage capacity of 4 kbit organized as 256 words by 16 bits. The device operates within a supply voltage range of 2.5 V to 5.5 V and supports a maximum input frequency of 2 MHz. It is housed in a SOP-J-8 package with surface mount installation. Key electrical parameters include a maximum circuit current of 3 mA, a standby current of 2 μA, and a write cycle time of 5 ms. The component ensures data retention for up to 40 years and withstands endurance of 1 million cycles.

Memory IC Feature Summary

• Compatible with Microwire BUS for serial data communication
• Qualified under AEC-Q100 standards for automotive reliability
• Operates across an extended temperature range from -40°C to +105°C

Memory IC Applications

• Automotive electronic systems requiring high-reliability non-volatile memory
• Functional safety support applications
• Data storage in vehicle control units

Memory IC Procurement Notes

Verify the specific suffix WME2 against official ROHM documentation to confirm package type and tape-and-reel specifications. Confirm AEC-Q100 qualification status directly with the manufacturer or authorized distributors. Ensure compatibility with existing Microwire interface designs before procurement.

Memory IC Selection Notes

Select this component when a 4 kbit capacity with 16-bit word width is required for automotive environments. It is suitable for designs needing wide voltage operation between 2.5 V and 5.5 V. Consider the SOP-J-8 package constraints and Microwire interface requirements during schematic capture.

Memory IC Part Context

This part belongs to the BR93A series of automotive EEPROMs from ROHM Semiconductor. It is designed specifically for high-reliability applications in the automotive sector. The series supports functional safety analysis, making it appropriate for critical vehicle systems where data integrity and long-term retention are essential.

Memory IC Replacement Considerations

Check for direct substitutes within the BR93A series with different densities. Verify pinout and interface compatibility if considering alternative manufacturers' Microwire EEPROMs.