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FM31T372

Ramtron
Part Number FM31T372
Manufacturer Ramtron
Description (FM31T372 - FM31T378) System Supervisor & Temperature Compensated RTC
Published Dec 28, 2011
Detailed Description www.DataSheet.co.kr Preliminary FM31T372/374/376/378 System Supervisor & Temperature Compensated RTC (TCXO) with Embed...
Datasheet PDF File FM31T372 PDF File

FM31T372
FM31T372


Overview
www.
DataSheet.
co.
kr Preliminary FM31T372/374/376/378 System Supervisor & Temperature Compensated RTC (TCXO) with Embedded Crystal Features High Integration Device Replaces Multiple Parts  Real-time Clock (RTC) o Embedded 32.
768kHz Crystal o Temperature Compensated  32.
768 kHz Clock Output  Low-VDD Detection Drives Reset  Watchdog Timer  Early Power-Fail Warning/NMI  Two 16-bit Event Counters with Event Driven Interrupt Output  Serial Number with Write-lock for Security Ferroelectric Nonvolatile RAM  4Kb, 16Kb, 64Kb, and 256Kb versions  Unlimited Read/Write Endurance  10 year Data Retention  NoDelay™ Writes Real-time Clock/Calendar  Temp-Compensated Using On-Chip Sensor o  5 ppm over -40°C to +85°C o Accuracy  2 ½ min.
per year  Backup Current 1.
4 A (max.
) at +25C  Seconds through Centuries in BCD format  Tracks Leap Years through 2099    No External Crystal Required Offset Register to Correct for Crystal Aging Supports Battery or Capacitor Backup Processor Companion  32.
768 kHz Clock Output  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  Event Counter Driven Interrupt Output  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 5.
5V  Small Footprint 14-pin “Green” SOIC (-G)  Low Operating Current  -40C to +85C Operation Description The FM31T37x is a family of integrated devices that includes the most commonly needed functions for processor-based systems.
Major features include nonvolatile F-RAM memory available in various sizes, temperature-compensated real-time cl...



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