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Ramtron companion processor provides analog, mixed-signal functions

Posted: 09 Jun 2004 ?? ?Print Version ?Bookmark and Share

Keywords:ramtron international? processor companion? fm4005? fm32x? fm31x?

Ramtron International Corp., a supplier of nonvolatile ferroelectric semiconductor products, introduced its newest Processor Companion product featuring highly integrated analog and mixed-signal functions for processor-based systems.

The FM4005 device combines a real-time clock (RTC), low-VDD reset, watchdog timer, battery-backed event counter, lockable 64-bit serial number area, and general-purpose comparator that can be used for an early power-fail interrupt (NMI) or other purpose.

"Our Processor Companions address a set of common requirements in systems that collect data," said Mike Alwais, SVP of FRAM Products. "The FM4005 provides integrated power management and system support in a single chip for customers of our parallel FRAM memories or other data storage devices."

Using an advanced 0.35?m manufacturing process, the FM4005 combines five separate but distinct system functions in a single 14-pin SOIC package. Additionally, the on-chip integration allows the functions to be controlled with a single interface and operate from 2.7V to 5.5V.

Other features of the processor companions include a processor supervisor and early power-fail interrupt. The processor supervisor provides a host processor with two basic functions - detection of power supply fault conditions and a watchdog timer to escape a software lockup condition. A reset pin drives the processor-reset input during power faults, power-up and down and software lockups, and provides a switch debounce function to facilitate manual reset inputs.

The early power-fail interrupt, an early power-fail warning, can be provided to the processor well before VDD drops out of specification. The comparator is used to create a NMI.

The introduction of the FM4005 follows recent announcements of the FM32x and FM31x processor companion families. Presently, the company offers nine products in its line of processor companions. Pricing for the FM4005 starts at $2.62 for 10,000-piece quantities.

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