Ramtron launches 2-Megabit Serial F-RAM
Ramtron International has unveiled the industry’s first 2-megabit serial F-RAM memory in an 8-lead TDFN (5.0 x 6.0 mm) package. Manufactured on an advanced 130 nanometer CMOS process, the FM25H20 is a high-density nonvolatile F-RAM memory that operates at low power and features a high-speed serial peripheral interface (SPI). The 3-volt, 2Mb serial F-RAM writes at maximum bus speed with virtually unlimited endurance for greater data collection capacity in a tiny package, enabling system designers to reduce costs and board space in a range of advanced applications including meters and printers.The
“The 2Mb serial F-RAM is a natural extension for our metering and printer customers who want to increase data collection capacity in their next-generation applications without increasing board space. The FM25H20 offers our half megabit serial F-RAM customers quadruple the memory in the same small footprint,” explains Duncan Bennett, Ramtron Strategic Manager. “In addition to enhancing existing systems, this technological development moves F-RAM into a range of new markets that require a low-power memory in a very constrained space, such as portable medical devices.”
The FM25H20 is organized as a 256K x 8 bit nonvolatile memory that reads and writes at bus speed up to 40MHz, with essentially unlimited endurance, 10-year data retention, and low operating currents. The device incorporates an industry-standard SPI interface that optimizes F-RAM’s high-speed write capability. A hardware and software write protection feature is also included on the FM25H20 to prevent inadvertent writes and data corruption. The 2Mb serial F-RAM operates at low power, drawing less than 10 milliamps for reads/writes at 40MHz, 80 microamps (typical) in standby, and 3 microamps (typical) in ultra-low-current sleep mode. Pin-compatible with equivalent serial Flash devices, but far superior because of its fast access time, high endurance and low operating current, the 2Mb F-RAM operates from 2.7 to 3.6 volts over the entire industrial temperature range (-40 degrees C to +85 degrees C).