FM3204 Datasheet | Ramtron

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 panion - 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 - parator 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 - No Delay™ Writes Fast Two-wire Serial Interface - Up to 1 MHz Maximum Bus Frequency - Supports Legacy Timing for 100 k Hz & 400 k Hz - Device Select Pins for up to 4 Memory Devices - panion Controlled via 2-wire Interface Easy to Use Configurations - Operates from 2.7 to 5.5V - Small Footprint 14-pin SOIC (-S) o “Green” 14-pin SOIC (-G) - Pin patible with FM31xx Series - Low Operating Current - -40°C to +85°C Operation active when VDD drops below a programmable threshold and remains active for 100 ms after VDD rises above the trip point. A programmable watchdog timer runs from 100 ms to 3 seconds. The watchdog timer is optional, but if enabled it will assert the reset signal for 100 ms if not restarted by the host before the timeout. A flag-bit indicates the source of the reset. A general-purpose parator pares an external input pin to the onboard 1.2V reference. This is useful for generating an early warning power-fail interrupt (NMI) but can be used for any purpose. The family also includes a programmable 64-bit serial number that can be locked making it unalterable. Additionally 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...