AN89659 - Interfacing SPI F-RAM with PSoC® 4

You can also use this application note as a reference design guide to interface SPI F-RAM with other standard SPI master controllers. This application note includes an associated PSoC 4 example project.

Introduction

The SPI F-RAM is a serial nonvolatile memory employing an advanced ferroelectric process. A ferroelectric random access memory (F-RAM) is a nonvolatile RAM that eliminates the complexities, overhead, and system-level reliability problems caused by serial EEPROM and other nonvolatile memories. Unlike serial EEPROM and flash memories, the F-RAM performs write operations at bus speed without incurring any write delays (NoDelay™). Data is directly written into the memory array, and the next bus cycle can begin immediately without the need for data polling. The F-RAM products offer a very high endurance of 1014, orders of magnitude higher than serial EEPROM and flash memories.