{"id":6307,"date":"2026-06-12T11:25:11","date_gmt":"2026-06-12T11:25:11","guid":{"rendered":"https:\/\/materialparts.com\/fm25040b-gtr\/"},"modified":"2026-06-12T11:25:11","modified_gmt":"2026-06-12T11:25:11","slug":"fm25040b-gtr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/fm25040b-gtr\/","title":{"rendered":"FM25040B-GTR"},"content":{"rendered":"

Productos<\/h2>\n

The FM25040B-GTR from Infineon Technologies is a 4Kbit F-RAM (Ferroelectric RAM) with SPI interface supporting up to 20MHz clock. With 10^14 write endurance cycles, 151-year data retention at 85\u00b0C, and instant write capability, it outperforms EEPROM in both speed and reliability.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Capacity<\/td>\n4Kbit (512 x 8)<\/td>\n<\/tr>\n
Interface<\/td>\nSPI (Mode 0 and 3)<\/td>\n<\/tr>\n
Max Clock<\/td>\n20MHz<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n2.0V – 5.5V<\/td>\n<\/tr>\n
Write Endurance<\/td>\n10^14 cycles (100 trillion)<\/td>\n<\/tr>\n
Data Retention<\/td>\n151 years @85\u00b0C<\/td>\n<\/tr>\n
Write Time<\/td>\nInstant (no write delay)<\/td>\n<\/tr>\n
Active Current<\/td>\n1mA<\/td>\n<\/tr>\n
Standby Current<\/td>\n1\u00b5A<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nSOIC-8 (150mil, GTR = tape & reel)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 10^14 write endurance cycles \u2014 virtually unlimited writes<\/li>\n
  • Instant write with no page buffer or write delay<\/li>\n
  • 151-year data retention at 85\u00b0C for long-term reliability<\/li>\n
  • 2.0V-5.5V wide supply range for multi-voltage systems<\/li>\n
  • 20MHz SPI clock for fast data transfer<\/li>\n
  • Hardware write protect and software write protect<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Data logging and telemetry storage<\/li>\n
    • Meter calibration and configuration data<\/li>\n
    • Industrial PLC parameter storage<\/li>\n
    • Automotive ECU non-volatile settings<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The FM25040B-GTR from Infineon Technologies is a 4Kbit F-RAM (Ferroelectric RAM) with SPI interface supporting up to 20MHz clock. With 10^14 write endurance cycles, 151-year data retention at 85\u00b0C, and instant write capability, it outperforms EEPROM in both speed and reliability. Key Specifications Capacity 4Kbit (512 x 8) Interface SPI (Mode 0 and […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[173],"class_list":["post-6307","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-infineon"],"acf":{"brief_explanation":"4Kbit F-RAM, SPI 20MHz, 10^14 write endurance, instant write, SOIC-8 tape & reel","date_code":"","package_case":"SOIC-8 (150mil, 4.9 x 3.9mm)","in_stock":5578,"datasheet":"https:\/\/www.infineon.com\/dgdl\/Infineon-FM25040B-DS-v01_00-EN.pdf","price":"$0.72 @1ku","product_introduction":"The FM25040B-GTR from Infineon Technologies (formerly Ramtron\/Cypress) is a 4Kbit F-RAM memory with SPI interface offering virtually unlimited write endurance (10^14 cycles) and instant write capability. Unlike EEPROM, which requires milliseconds for a write cycle and degrades after 10^6 cycles, the F-RAM writes in nanoseconds with no wear-out mechanism, making it ideal for applications requiring frequent non-volatile data writes. The 151-year data retention at 85\u00b0C and 20MHz SPI interface provide both reliability and performance in a standard SOIC-8 package.","working_principle":"The FM25040B-GTR uses ferroelectric memory cells where each bit is stored as the polarization state of a lead zirconate titanate (PZT) ferroelectric capacitor. Unlike EEPROM charge storage, which degrades with each write cycle, ferroelectric polarization switching is inherently non-destructive and repeatable for 10^14 cycles without wear-out. A read operation applies an electric field to the capacitor and senses the resulting current pulse; the polarization is then restored automatically (read-restore). Write operations are similarly instantaneous \u2014 the new polarization is set in nanoseconds with no erase-then-program sequence required. The SPI interface follows the standard JEDEC command set with opcodes for READ (0x03), WRITE (0x02), WREN (0x06), and WRDI (0x04).","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>\/CS<\/td>Chip select (active low)<\/td><\/tr>
      2<\/td>SO<\/td>SPI data output (MISO)<\/td><\/tr>
      3<\/td>\/WP<\/td>Write protect input<\/td><\/tr>
      4<\/td>VSS<\/td>Ground<\/td><\/tr>
      5<\/td>SI<\/td>SPI data input (MOSI)<\/td><\/tr>
      6<\/td>SCK<\/td>SPI clock input<\/td><\/tr>
      7<\/td>\/HOLD<\/td>SPI hold (pause communication)<\/td><\/tr>
      8<\/td>VDD<\/td>Power supply (2.0-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Smart meter data logging with frequent writes<\/li>
      • Industrial PLC and automation parameter storage<\/li>
      • Automotive ECU calibration and fault code storage<\/li>
      • Medical device event logging and configuration data<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Capacity<\/th>Interface<\/th>Endurance<\/th><\/tr>
        FM25C04B-GTR<\/td>Infineon<\/td>4Kbit<\/td>SPI<\/td>10^14<\/td><\/tr>
        MB85RS04<\/td>Fujitsu<\/td>4Kbit<\/td>SPI<\/td>10^12<\/td><\/tr>
        AT25XE041B<\/td>Dialog<\/td>4Mbit<\/td>SPI<\/td>10^6 (EEPROM)<\/td><\/tr>
        93C46B-E<\/td>Microchip<\/td>1Kbit<\/td>Microwire<\/td>10^6 (EEPROM)<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6307","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=6307"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6307\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6307"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}