FM18W08-PG

Memory IC Overview

The FM18W08-PG is a 256-kilobit (32K x 8) ferroelectric random access memory (F-RAM) manufactured by Ramtron. It utilizes an advanced ferroelectric process to provide nonvolatile data storage with byte-wide parallel interface capabilities. The device operates within a wide voltage range of 2.7 V to 5.5 V and supports asynchronous read/write operations with a typical access time of 70 ns. It is housed in a 28-pin SOIC package and functions across an industrial temperature range from -40 °C to +85 °C, offering high endurance and long-term data retention without the need for battery backup.

Memory IC Feature Summary

• Nonvolatile memory architecture using ferroelectric technology eliminates the need for battery-backed SRAM solutions.
• Byte-wide parallel interface ensures compatibility with standard SRAM and EEPROM pinouts for easy integration.
• High write endurance capability allows for over one trillion read/write cycles.
• Wide operating voltage range supports diverse power supply environments.

Memory IC Applications

• Data logging systems requiring frequent write operations
• Industrial control applications needing reliable nonvolatile storage
• Embedded systems replacing battery-backed RAM modules

Memory IC Procurement Notes

Verify the specific suffix 'PG' against official Cypress or Infineon documentation to confirm package type and lead-free status. Ensure the source document explicitly lists FM18W08-PG as a distinct part number variant rather than a generic family designation. Cross-reference the manufacturer's current product portfolio, as Ramtron products are now managed under Infineon Technologies.

Memory IC Selection Notes

Select this component when a system requires high-speed, nonvolatile memory with high write endurance and no battery maintenance. It serves as a direct drop-in replacement for battery-backed SRAMs due to its compatible pinout. Consider the 2.7 V to 5.5 V operating range for flexibility in power design. Verify that the 70 ns access time meets the timing requirements of the host processor.

Memory IC Part Context

The FM18W08 belongs to the F-RAM family developed by Ramtron International Corporation, which was acquired by Cypress Semiconductor and subsequently integrated into Infineon Technologies. This series is designed to bridge the gap between volatile SRAM speed and nonvolatile EEPROM density. The 256Kb capacity provides a balance between storage size and physical footprint for embedded applications.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers for FM18W08-PG were not found in the provided reference material. Users should consult official Infineon or Cypress cross-reference guides for equivalent F-RAM devices with matching pinouts and specifications.