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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.