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.

http://www.cypress.com

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