HyperBus memory interface suits autonomous driving reaction times

Cypress Semiconductor has announced the inclusion of its high-bandwidth HyperBus eight-bit serial memory interface into the new eXpanded SPI (xSPI) electrical interface standard from the JEDEC Solid State Technology Association.

The xSPI standard defines requirements for the compatibility of high-performance x-eight serial interfaces, including read and write commands, electrical characteristics, signalling protocols for command and data transfers, and a standard pin-out in a BGA footprint. It enables controller and chipset manufacturers to design a universal memory controller. The inclusion of the HyperBus interface in the xSPI standard simplifies designing in HyperBus-based memories and provides more flexibility to system designers to implement instant-on functionality in automotive, industrial and IoT applications.

Cypress introduced the HyperBus interface in 2014, as a new class of high-performance NOR flash and RAM that enables instant-on functionality for autonomous driving and industry 4.0 applications. Cypress’ HyperBus-based memories include high-density HyperFlash~ NOR flash devices with the bandwidth required for the highest-performance embedded systems and high-speed HyperRAM~ self-refresh DRAM devices for systems requiring expanded scratchpad memory.

The JEDEC standard provides the means to easily second-source xSPI-compliant Flash devices. The standard provides a single PCB package footprint and enables a unified device driver for all xSPI memories that configures the memory system based on a standardised xSPI method.

The 12-pin Cypress HyperBus interface consists of an eight-pin address/data bus, a differential clock (two signals), one chip select and a read data strobe for the controller, reducing the overall cost of a system. Memories based on the interface enable faster systems with quicker response times and rich user experiences, says Cypress. The HyperBus interface enables a wide range of high-performance applications, such as automotive instrument clusters, infotainment and navigation systems and factory automation systems.

Cypress’ programmable SoCs, general-purpose microcontrollers, analogue ICs, wireless, USB-based connectivity solutions and memories help engineers design differentiated products for the Cypress is the leader in advanced embedded system solutions for the automotive, industrial, home automation and appliances markets.



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