FM31T374

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 k...