Ramtron International Corporation , briefly Ramtron, was an American fabless manufacturer of F-RAM building blocks. It was acquired in 2014 by Cypress Semiconductor Corporation. The company was based in Colorado Springs , Colorado . The manufacturing partner companies (as of February 2012) were Texas Instruments , Samsung and Toshiba . Ramtron and its partners produced serial and parallel non-volatile memory modules, auxiliary modules for processors, nonvolatile state memories, and recording blocks for F-RAM-based events.