{"id":10488,"date":"2026-07-20T04:20:19","date_gmt":"2026-07-20T04:20:19","guid":{"rendered":"https:\/\/ic-vendor.com\/cat24c256hu4igt3\/"},"modified":"2026-07-20T04:20:19","modified_gmt":"2026-07-20T04:20:19","slug":"cat24c256hu4igt3","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/es\/cat24c256hu4igt3\/","title":{"rendered":"CAT24C256HU4IGT3"},"content":{"rendered":"

Productos<\/h2>\n

The onsemi CAT24C256HU4IGT3 is a 256-Kb serial EEPROM organized as 32,768 words x 8 bits, communicating via an I2C bus interface at clock frequencies up to 1 MHz. Housed in an 8-pin UDFN package, it operates from 1.8 V to 5.5 V and features AEC-Q100 qualification, 64-byte page write buffer, hardware write protection, and 100-year data retention with 1,000,000 program\/erase cycles.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Memory Size<\/td>\n256 Kb (32 KB)<\/td>\n<\/tr>\n
Organization<\/td>\n32,768 x 8 bit<\/td>\n<\/tr>\n
Interface<\/td>\nI2C (Standard, Fast, Fast-Plus)<\/td>\n<\/tr>\n
Maximum Clock Frequency<\/td>\n1 MHz (Fast-Plus Mode)<\/td>\n<\/tr>\n
Supply Voltage Range<\/td>\n1.8 V to 5.5 V<\/td>\n<\/tr>\n
Page Write Buffer<\/td>\n64 Bytes<\/td>\n<\/tr>\n
Write Cycle Time<\/td>\n5 ms (Max)<\/td>\n<\/tr>\n
Data Retention<\/td>\n100 Years<\/td>\n<\/tr>\n
Endurance<\/td>\n1,000,000 Program\/Erase Cycles<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nUDFN-8 (2 x 3 mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Supports Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) I2C protocols<\/li>\n
  • Wide supply voltage range from 1.8 V to 5.5 V<\/li>\n
  • 64-byte page write buffer for efficient data writing<\/li>\n
  • Hardware write protection for entire memory array<\/li>\n
  • Schmitt triggers and noise suppression filters on SCL and SDA inputs<\/li>\n
  • Low power CMOS technology with 3 mA max supply current<\/li>\n
  • AEC-Q100 qualified for automotive applications<\/li>\n
  • 1,000,000 program\/erase cycles and 100-year data retention<\/li>\n
  • Pb-Free, RoHS compliant<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Automotive electronic control units (ECUs)<\/li>\n
    • Industrial instrumentation and calibration data storage<\/li>\n
    • Consumer electronics configuration storage<\/li>\n
    • Medical device parameter logging<\/li>\n
    • IoT device identification and calibration data<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The onsemi CAT24C256HU4IGT3 is a 256-Kb serial EEPROM organized as 32,768 words x 8 bits, communicating via an I2C bus interface at clock frequencies up to 1 MHz. Housed in an 8-pin UDFN package, it operates from 1.8 V to 5.5 V and features AEC-Q100 qualification, 64-byte page write buffer, hardware write protection, […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[1793],"chip_brand":[144],"class_list":["post-10488","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-cat24c256hu4igt3","chip_brand-on"],"acf":{"brief_explanation":"256Kb I2C EEPROM, 32Kx8, 1MHz Fast-Plus, 1.8-5.5V, UDFN-8, AEC-Q100, 100yr retention","date_code":"","package_case":"UDFN-8 (2 x 3 x 0.55 mm)","in_stock":4127,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/CAT24C256-D.PDF","price":"$0.25 @ 3ku","product_introduction":"The onsemi CAT24C256HU4IGT3 is a 256-Kb serial EEPROM device organized as 32,768 words of 8 bits each, communicating via a standard 2-wire I2C bus interface. The device supports Standard-mode (100 kHz), Fast-mode (400 kHz), and Fast-Plus-mode (1 MHz) clock frequencies, providing flexibility for various system architectures. Housed in an ultra-compact 8-pin UDFN package (2 x 3 mm), it operates over a wide supply voltage range of 1.8 V to 5.5 V, making it compatible with both low-voltage and standard 5V systems. The CAT24C256 is AEC-Q100 qualified, ensuring reliability in demanding automotive environments. It features a 64-byte page write buffer for efficient data writes, hardware write protection for the entire memory, and Schmitt trigger inputs with noise suppression filters on the I2C bus pins. The device achieves an industry-leading 100-year data retention and 1,000,000 program\/erase cycle endurance.","working_principle":"The CAT24C256HU4IGT3 communicates via the I2C protocol using two bidirectional open-drain lines: SDA (data) and SCL (clock). The device address consists of a 1010 binary prefix, three hardware-addressable bits (A0, A1, A2) allowing up to eight devices on the same bus, and a read\/write bit. For write operations, the master sends a device address byte followed by two address bytes (16-bit memory address, most significant byte first), then up to 64 bytes of data. The page write buffer accumulates data bytes and programs them to the non-volatile memory array within a 5 ms write cycle. For read operations, the master writes the address (sequential or random read), then generates a restart condition to read data bytes. The device supports sequential reads across the entire memory map. Hardware write protection (WP pin) prevents write operations to the entire memory when asserted. Schmitt triggers on SCL and SDA inputs provide noise immunity, allowing reliable communication in electrically noisy environments.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>A0<\/td>Input<\/td>Device address bit 0 \u2014 tied to VCC or GND for bus addressing<\/td><\/tr>\n
      2<\/td>A1<\/td>Input<\/td>Device address bit 1 \u2014 tied to VCC or GND for bus addressing<\/td><\/tr>\n
      3<\/td>A2<\/td>Input<\/td>Device address bit 2 \u2014 tied to VCC or GND for bus addressing<\/td><\/tr>\n
      4<\/td>GND<\/td>Power<\/td>Ground reference<\/td><\/tr>\n
      5<\/td>SDA<\/td>I\/O<\/td>Serial data input\/output \u2014 bidirectional I2C data line<\/td><\/tr>\n
      6<\/td>SCL<\/td>Input<\/td>Serial clock input \u2014 I2C clock line from master<\/td><\/tr>\n
      7<\/td>WP<\/td>Input<\/td>Write protect \u2014 active high disables all write operations<\/td><\/tr>\n
      8<\/td>VCC<\/td>Power<\/td>Supply voltage (1.8V to 5.5V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Automotive ECU configuration and calibration data storage<\/li>\n
      • Industrial sensor calibration and serial number logging<\/li>\n
      • Consumer electronics user preference and settings storage<\/li>\n
      • Medical device patient data and device parameter logging<\/li>\n
      • IoT edge device identification and secure key storage<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        onsemi<\/td>CAT24C256WI-GT3<\/td>SOIC-8<\/td>Same spec, wider package<\/td><\/tr>\n
        Microchip<\/td>24AA256-I\/MF<\/td>DFN-8<\/td>Pin-compatible, 256Kb I2C EEPROM<\/td><\/tr>\n
        STMicroelectronics<\/td>M24256-BMN6P<\/td>UFDFPN8<\/td>Equivalent, 256Kb, AEC-Q100<\/td><\/tr>\n
        ROHM<\/td>BR24G256FVT-3AGE2<\/td>TSSOP-8<\/td>256Kb I2C EEPROM<\/td><\/tr>\n
        onsemi<\/td>CAT24C512HU4IGT3<\/td>UDFN-8<\/td>512Kb higher density variant<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/10488","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/comments?post=10488"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/10488\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/media?parent=10488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/categories?post=10488"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/tags?post=10488"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/chip_brand?post=10488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}