{"id":5803,"date":"2026-06-11T05:30:29","date_gmt":"2026-06-11T05:30:29","guid":{"rendered":"https:\/\/materialparts.com\/fm31256-gtr\/"},"modified":"2026-06-11T06:59:22","modified_gmt":"2026-06-11T06:59:22","slug":"fm31256-gtr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/fm31256-gtr\/","title":{"rendered":"FM31256-GTR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The FM31256-GTR from Infineon (Cypress) is a 256Kbit F-RAM (Ferroelectric RAM) with I2C interface, 1MHz speed, and 10^14 read\/write endurance in SOIC-8 for non-volatile data storage.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n
\u5305\u88c5<\/td>\nSOIC-8 (4.9×3.9mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The FM31256-GTR from Infineon (Cypress) is a 256Kbit F-RAM (Ferroelectric RAM) with I2C interface, 1MHz speed, and 10^14 read\/write endurance in SOIC-8 for non-volatile data storage. Key Specifications Package SOIC-8 (4.9×3.9mm) Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Power management<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[],"chip_brand":[277],"class_list":["post-5803","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-cypress"],"acf":{"brief_explanation":"256Kbit F-RAM, I2C, 1MHz, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9x3.9mm)","in_stock":3168,"datasheet":"https:\/\/www.infineon.com\/cms\/en\/product\/memories\/","price":"$3.50 @ 1ku","product_introduction":"The FM31256-GTR from Infineon (Cypress) is a 256Kbit F-RAM (Ferroelectric RAM) with I2C interface, 1MHz speed, and 10^14 read\/write endurance in SOIC-8 for non-volatile data storage.","working_principle":"The FM31256-GTR is a 256Kbit (32KB) F-RAM (Ferroelectric RAM) from Infineon (formerly Ramtron) with integrated RTC and system supervisor in SOIC-8. The F-RAM stores data using ferroelectric polarization: a PZT (lead zirconate titanate) film holds each bit as the orientation of electric dipoles. Read\/write operations complete in 70ns (vs. 5ms for EEPROM page writes), and the device supports 10^14 read\/write cycles (vs. 10^5-10^6 for EEPROM) with 151-year data retention. The integrated RTC tracks time with 300nA battery-backup current. The system supervisor provides: a power-fail reset output (RST goes low when VDD drops below 2.63V), a programmable low-line comparator (CAL\/PFO) for early warning of power failure, and a watchdog timer. The dual I2C interface allows the F-RAM and RTC to have separate I2C addresses, enabling independent access. The F-RAM is ideal for storing frequently updated data like meter readings, counters, and configuration parameters that would wear out EEPROM.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>C2<\/td>Input<\/td>I2C serial clock (secondary address)<\/td><\/tr>
      2<\/td>D2<\/td>I\/O<\/td>I2C serial data (secondary address)<\/td><\/tr>
      3<\/td>A0<\/td>Input<\/td>Address select 0<\/td><\/tr>
      4<\/td>A1<\/td>Input<\/td>Address select 1<\/td><\/tr>
      5<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      6<\/td>CAL\/PFO<\/td>Output<\/td>Calendar alarm \/ Power-fail output<\/td><\/tr>
      7<\/td>RST<\/td>Output<\/td>Reset output (active low, push-pull)<\/td><\/tr>
      8<\/td>VDD<\/td>Power<\/td>Supply (2.7-3.6V)<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Power management<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      Infineon<\/td>FM31256-G<\/td>SOIC-8<\/td>Same device, tube package<\/td><\/tr>
      Infineon<\/td>FM3164-GTR<\/td>SOIC-8<\/td>64Kbit F-RAM version<\/td><\/tr>
      Ramtron<\/td>FM24C256B-GTR<\/td>SOIC-8<\/td>256Kbit F-RAM only (no RTC)<\/td><\/tr>
      STMicroelectronics<\/td>M95256-WMN6P<\/td>SOIC-8<\/td>256Kbit EEPROM (no F-RAM speed)<\/td><\/tr>
      NXP<\/td>PCF85263ATL-1,118<\/td>TSSOP-8<\/td>RTC with 256B SRAM, low power<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5803","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=5803"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5803\/revisions"}],"predecessor-version":[{"id":5953,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5803\/revisions\/5953"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5803"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}