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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 0

On Order:Order inventroy details 10,000
Factory Stock:Factory Stock: 0
Factory Lead Time: N/A
Minimum Order: 2,500
Multiple Of: 2,500
Quantity Web Price
2,500+ $12.86


Attributes Table
FRAM Type Integrated FRAM
Memory Density 256kb
Interface Type I2C/2-Wire
Memory Organization 32 K x 8
Supply Voltage-Nom 2.7V to 5.5V
Access Time-Max 3µs
Temperature Range -40°C to +85°C
Features and Applications

The FM31256-GTR is a 256 kb memory density, 2-wire interface F-RAM Memory, available in surface mount SOIC-14 package.


  • High Integration Device Replaces Multiple Parts:
    • Serial Nonvolatile Memory
    • Real-time Clock (RTC)
    • Low Voltage Reset
    • Watchdog Timer
    • Ferroelectric Nonvolatile RAM:
    • 64Kb and 256Kb versions
    • Virtually Unlimited Read/Write Endurance
    • 38 year Data Retention (+75°C)
    • NoDelay™ Writes
  • Real-time Clock/Calendar:
    • Backup Current 1.4 µA
    • Seconds through Centuries in BCD format
    • Tracks Leap Years through 2099
    • Uses Standard 32.768 kHz Crystal (6pF)
  • Processor Companion:
    • Active-low Reset Output for VDD and Watchdog
    • Programmable VDD Reset Trip Point
    • Manual Reset Filtered and Debounced
    • Programmable Watchdog Timer
  • Fast Two-wire Serial Interface:
    • Up to 1 MHz Maximum Bus Frequency
    • Supports Legacy Timing for 100 kHz & 400 kHz
  • Easy to Use Configurations:
    • Operates from 2.7 to 5.5V
    • Small Footprint 14-pin “Green” SOIC (-G)