FM24C256-G overview

FM24C256-G is a component documented by Ramtron International C. The PDF description identifies it as "256Kb FRAM Serial Memory." This guide condenses the most useful engineering information from the available PDF so that designers and sourcing teams can identify the checks that still need confirmation in the original document.

Datasheet snapshot

  • Manufacturer: Ramtron International C...
  • Part number: FM24C256-G
  • Category: Memory
  • Datasheet length: 12 Pages

Key features noted in the PDF

  • Organized as 32,768 x 8 bits
  • High Endurance 10 Billion (1010) Read/Writes
  • 45 year Data Retention
  • NoDelay™ Writes
  • Advanced High-Reliability Ferroelectric Process Fast Two-wire Serial Interface
  • Up to 1 MHz Maximum Bus Frequency
  • Supports Legacy Timing for 100 kHz & 400 kHz Low Power Operation

Specifications and operating details

The following points were extracted from the PDF text. Check the associated conditions, notes and limits in the complete document before using a value in a design.

  • Also, FRAM exhibits much lower power during writes than EEPROM since write operations do not require an internally elevated power supply voltage for write circuits.
  • Specifications are guaranteed over an industrial temperature range of -40°C to +85°C.
  • Pin Configuration VSS VDD WP SCL SDA Pin Names Function A0-A2 Device Select Address SDA Serial Data/Address SCL Serial Clock WP Write Protect VSS Ground VDD Supply Voltage 5V FM24C256-SE 8-pin EIAJ SOIC FM24C256-G “Green” 8-pin EIAJ SOIC N.
  • SCL toggling between VDD-0.3V and VSS, other inputs VSS or VDD-0.3V 2.
  • The input pull-down circuit is strong (20KΩ ) when the input voltage is below VIL and weak (1MΩ ) when the input voltage is above VIH.
  • AC Test Conditions Equivalent AC Load Circuit Input Pulse Levels 0.1 V DD to 0.9 VDD Input rise and fall times 10 ns Input and output timing levels 0.5 V DD 5.5V Output 1700 Ω 100 pF Rev 3.1 May 2005 Diagram Notes All start and stop timing.
  • Read Bus Timing tSU:SDA Start tR tF Stop Start tBUF tHIGH 1/fSCL tLOW tSP tSP Acknowledge tHD:DAT tSU:D AT tAA tDH SCL SDA Write Bus Timing tSU:STO Start Stop Start Acknowledge tAA tHD:DAT tHD:STA tSU:DAT SCL SDA Data Retention (VDD = 4.5V.

Topics covered by the datasheet

The document includes sections related to:

  • FM24C256_05 RAMTRON
  • Features
  • Description
  • Ordering Information
  • Revision History

Engineering review checklist

  • Confirm supply rails, clock limits, memory size, peripheral mapping and I/O voltage compatibility.
  • Check package pinout, boot configuration, programming interface and silicon-revision errata.
  • Budget decoupling, thermal margin, startup timing and firmware recovery behavior before release.

Always confirm values against the latest manufacturer-controlled datasheet, especially when qualifying a substitute or releasing a production BOM.

View the complete PDF and model record

Open the FM24C256-G datasheet and model details to review the complete PDF, document pages and available product information.

Source attribution

Adapted from the PDF associated with this DigiCamel model page.

Source model URL: https://www.digicamel.com/product.php?slug=fm24c256-g-ramtron-international-c

FM24C256-G Ramtron International C... Memory FM24C256-G datasheet FM24C256-G specifications FM24C256-G applications