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16-Mbit parallel nvSRAMs and Synchronous NAND interfaces

September 12, 2012 // Julien Happich

16-Mbit parallel nvSRAMs and Synchronous NAND interfaces

Cypress Semiconductor introduced a family of 16-Mbit non-volatile static random access memories (nvSRAMs), including devices with synchronous NAND flash memory interfaces.

The family marks the industry's first non-volatile SRAM memory that can interface directly with Open NAND Flash Interface (ONFI) and Toggle NAND bus controllers, claims the manufacturer. The 16-Mbit family extends Cypress's nvSRAM portfolio to address Solid State Drives (SSD) for enterprise systems, high-end Programmable Logic Controllers (PLC), high-speed data/error loggers in storage, and networking equipment. The 16-Mbit nvSRAMs offer access times as low as 25ns, making them the fastest asynchronous non-volatile RAMs on the market. The new devices are offered with an optional integrated Real-Time Clock (RTC) that is not available in competing solutions.

The RTC enables time-stamping of critical data to be logged. Cypress nvSRAMs feature infinite read, write and recall cycles, with 20-year data retention, making them suitable for applications requiring continuous high-speed writing of data and absolute non-volatile data security.

The ONFI NAND interface nvSRAM supports the ONFI 3.0 NV-DDR interface (100MHz) and the ONFI 3.0 NV-DDR2 interface (200MHz). The Toggle NAND interface nvSRAM is compatible with Toggle 2.0 NAND controllers for DDR operation at 200MHz. Both ONFI and Toggle versions support single-channel operations in x8 and x16 data bus widths, and dual- and quad-channel operations in x8 bit data bus width, which allows operations of up to 400 million transactions per second.

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