(FM31T372 - FM31T378) System Supervisor & Temperature Compensated RTC
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Preliminary
FM31T372/374/376/378
System Supervisor & Temperature Compensated RTC (TCXO) with Embed...
Description
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...
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