Processor Companion
Ramtron Processor Companions are complete support and peripheral solutions with highly integrated mixed signal (analog and digital) functions for processor-based systems. Never before has a solution combined the fast read/write performance and unlimited endurance of nonvolatile F-RAM (ferroelectric random access memory) with a real-time clock (RTC), processor supervisor, and other common peripherals.
SPI Processor Companion
Part
Vdd
Interface
Memory
RTC
RTC Alarm
Power Monitor
Watch Dog
Early Power Fail
SN
Battery Switch Over
Event Detect
Package
FM33256
3V
SPI
256Kb
Count
SOIC14
I2C Processor Companion
FM31L278
I2C
FM31L276
64Kb
FM31278
5V
FM31276
FM31256
3-5V
FM3164