Ramtron FM3204
the FM32xx offers a dual event counter that tracks the number of rising or falling edges detected on dedicated input pins. The counter can optionally be battery backed and even battery operated by attaching a backup power source to the VBAK pin.FEATURES
High Integration Device Replaces Multiple Parts● Serial Nonvolatile Memory
● Low Voltage Reset
● Watchdog Timer
● Early Power-Fail Warning/NMI
● Two 16-bit Event Counters
● Serial Number with Write-lock for Security Processor Companion
● Active-low Reset Output for VDD and Watchdog
● Programmable VDD Reset Trip Point
● Manual Reset Filtered and Debounced
● Programmable Watchdog Timer
● Dual Battery-backed Event Counter Tracks System Intrusions or other Events
● Comparator for Early Power-Fail Interrupt
● 64-bit Programmable Serial Number with Lock Ferroelectric Nonvolatile RAM
● 4Kb, 16Kb, 64Kb, and 256Kb versions
● Unlimited Read/Write Endurance
● 10 year Data Retention
● NoDelay™ Writes Fast Two-wire Serial Interface
● Up to 1 MHz Maximum Bus Frequency
● Supports Legacy Timing for 100 kHz & 400 kHz
● Device Select Pins for up to 4 Memory Devices
● Companion Controlled via 2-wire Interface Easy to Use Configurations
● Operates from 2.7 to 5.5V
● Small Footprint 14-pin SOIC (...