Ultra-Compact (MSOP8) Automotive-Grade SPI Bus EEPROMs

ROHM Semiconductor has recently announced the development of the BR35Hxxx series of SPI bus EEPROMs optimized for various on-board ECUs, such as ABS, automatic transmission, and airbags. A high degree of reliability has been achieved in an ultra-compact package, with operation guaranteed up to 125°C.

The integration of electronics in cars has shown a marked increase in recent years. Today’s vehicles now feature multiple ECUs in a variety of systems. Technological advancements have resulted in more sophisticated control, increasing the amount of information required. As a result, the scale of electronic circuits has expanded dramatically, along with the number of EEPROMs used, primarily for malfunction diagnosis and recording status information. The increased board density required due to the proliferation of electronics demands faster, higher capacity EEPROMs in a smaller form factor.

In response to this, ROHM offers the BR35Hxxx series of SPI bus EEPROMs in the compact MSOP8 package, featuring a chip area 60% smaller than conventional standard products (SOP8). This new series features a number of advantages over conventional products in order to meet the various demands of today’s sophisticated systems, including: 1. a unique double cell structure that eliminates accidental malfunctions caused by incidental devices degradation, 2. a built-in double reset circuit that prevents erroneous writing, even during unstable battery supply, and 3. an ESD resistance of 6kV (HBM), ensuring high strength against electrostatic surge voltages. A broad lineup is available in a wide range of capacities, interfaces, and package types.