FM33256B-G Memory Size, Cypress Semiconductor 256kbit SPI FRAM Memory 14-Pin SOIC, FM33256B-G

F-RAM Processor Companion
Integrated devices that includes the most commonly needed functions for processor-based systems.
Serial Nonvolatile FRAM MemoryReal-time Clock (RTC)Low Voltage ResetWatchdog TimerEarly Power-Fail Warning/NMITwo 16-bit Event CountersSerial Number with Write-lock for SecurityBattery-backed switchoverEvent Counter TrackingI²C interface
256-Kbit ferroelectric random access memory (F-RAM)Logically organized as 32 K font face=\"symbol\""´/font 8High-endurance 100 trillion (1014) read/writes151-year data retentionNoDelay™ writesAdvanced high-reliability ferroelectric processHigh Integration Device Replaces Multiple PartsSerial Non volatile memoryReal time clock (RTC) with alarmLow VDD detection drives resetWatchdog window timerEarly power-fail warning / NMI16-bit Non volatile event counterSerial number with write-lock for securityReal-time Clock/CalendarBackup current at 2 V: 1.15 μA at +25 °CSeconds through centuries in BCD formatTracks leap years through 2099Uses standard 32.768 kHz crystal (6 pF/12.5 pF)Software calibrationSupports battery or capacitor backupProgrammable watchdog window timerNon volatile event counter tracks system intrusions or other eventsComparator for power-fail interrupt or other use64-bit programmable serial number with lockFast serial peripheral interface (SPI)Up to 16-MHz frequencyRTC, Supervisor controlled via SPI interfaceSupports SPI mode 0 (0, 0) and mode 3 (1, 1)1.1 mA active current at 1 MHz150 μA standby currentOperating voltage: VDD = 2.7 V to 3.6 VIndustrial temperature: –40 °C to +85 °C