Ramtron FM31L276
The FM31L27x is a family of integrated devices that includes the most commonly needed functions for processor-based systems. The family operates from 2.7 to 3.6V. Each FM31L27x provides nonvolatile RAM available in sizes including 4Kb, 16Kb, 64Kb, and 256Kb versions.FEATURES
High Integration Device Replaces Multiple Parts● Serial Nonvolatile Memory
● Real-time Clock (RTC)
● 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 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
● RTC, Supervisor Controlled via 2-wire Interface Easy to Use Configurations
● Operates from 2.7 to 3.6V
● 14-pin “Green”/RoHS SOIC package (-G)
● Low Operating Current
● -40°C to +85°C Operation Ferroelectric Nonvolatile RAM
● 4Kb, 16Kb, 64Kb, and 2...