{"id":7070,"date":"2026-06-23T03:22:30","date_gmt":"2026-06-23T03:22:30","guid":{"rendered":"https:\/\/materialparts.com\/25lc256t-i-sn\/"},"modified":"2026-06-23T03:22:30","modified_gmt":"2026-06-23T03:22:30","slug":"25lc256t-i-sn","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/25lc256t-i-sn\/","title":{"rendered":"25LC256T-I\/SN"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The 25LC256T-I\/SN from Microchip Technology is a 256-Kbit SPI serial EEPROM organized as 32K x 8 bits, operating from 2.5V to 5.5V with clock rates up to 10 MHz. Available in an SOIC-8 package, it supports SPI modes 0 and 3, features block write protection, and delivers over 1 million erase\/write cycles with greater than 200-year data retention, making it ideal for reliable nonvolatile storage in industrial and consumer applications.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/td>\n256 Kbit (32K x 8)<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nSPI (Mode 0 and 3)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0633\u0627\u0639\u0629<\/td>\n10 MHz<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2.5 V to 5.5 V<\/td>\n<\/tr>\n
Page Size<\/td>\n64 bytes<\/td>\n<\/tr>\n
Write Cycle Time<\/td>\n5 ms (max)<\/td>\n<\/tr>\n
Erase\/Write Endurance<\/td>\n> 1,000,000 cycles<\/td>\n<\/tr>\n
\u0627\u0644\u0627\u062d\u062a\u0641\u0627\u0638 \u0628\u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\n> 200 years<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • SPI-compatible serial interface (modes 0 and 3) for simple microcontroller connection<\/li>\n
  • Block write protection: 1\/4, 1\/2, or entire array<\/li>\n
  • Self-timed erase and write cycle with 5 ms max write time<\/li>\n
  • Over 1 million erase\/write cycle endurance<\/li>\n
  • Greater than 200-year data retention<\/li>\n
  • Hardware write protect pin (WP)<\/li>\n
  • Low power CMOS technology with 5 uA max standby current<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial control parameter storage and calibration data<\/li>\n
    • Consumer electronics configuration and user preference storage<\/li>\n
    • Automotive system settings and fault logs<\/li>\n
    • Medical device calibration and patient data storage<\/li>\n
    • Networking equipment MAC address and configuration storage<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The 25LC256T-I\/SN from Microchip Technology is a 256-Kbit SPI serial EEPROM organized as 32K x 8 bits, operating from 2.5V to 5.5V with clock rates up to 10 MHz. Available in an SOIC-8 package, it supports SPI modes 0 and 3, features block write protection, and delivers over 1 million erase\/write cycles with […]<\/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":[],"chip_brand":[134],"class_list":["post-7070","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"256Kbit SPI EEPROM, 32Kx8, 10MHz, 2.5-5.5V, SOIC-8, >1M cycles, >200yr retention","date_code":"","package_case":"SOIC-8 (4.90 x 3.91 x 1.58 mm, 200mil)","in_stock":11200,"datasheet":"https:\/\/www.microchip.com\/content\/dam\/mchp\/documents\/MPD\/ProductDocuments\/DataSheets\/25AA256-25LC256-256K-SPI-Bus-Serial-EEPROM-20001822H.pdf","price":"$0.52 @ 1ku","product_introduction":"The 25LC256T-I\/SN from Microchip Technology is a 256-Kbit SPI bus serial EEPROM organized as 32,768 x 8-bit, operating from 2.5V to 5.5V with clock frequencies up to 10 MHz. The device supports SPI modes 0 and 3, providing flexible interface compatibility with most microcontrollers. Page size is 64 bytes with self-timed erase and write operations completing in 5 ms maximum. The device features block write protection selectable for 1\/4, 1\/2, or the entire array, a hardware write protect pin (WP), and status register with write-in-progress and write-enable latch bits. Endurance exceeds 1 million erase\/write cycles with data retention greater than 200 years.","working_principle":"The 25LC256T-I\/SN uses a standard SPI serial interface with four signal lines: CS (chip select), SCK (serial clock), SI (serial input), and SO (serial output). (1) Read Operation: The master asserts CS, sends the READ opcode (03h) followed by a 16-bit address, and the device shifts out data on SO starting from the addressed location. Sequential reads continue automatically incrementing the address. (2) Write Operation: Before writing, the WRITE ENABLE (WREN, 06h) opcode must be sent to set the write enable latch. Then the master sends the WRITE opcode (02h) with a 16-bit starting address and up to 64 bytes of data (one page). The device self-times the internal erase and write cycle, completing within 5 ms. The status register WIP bit indicates when the write is complete. (3) Write Protection: The WP pin protects the status register, while the BP0 and BP1 bits in the status register select the protected portion of the memory array.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>CS<\/td>Input<\/td>Chip select (active low)<\/td><\/tr>
      2<\/td>SO<\/td>Output<\/td>Serial data output (MISO)<\/td><\/tr>
      3<\/td>WP<\/td>Input<\/td>Write protect pin (active low)<\/td><\/tr>
      4<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>SI<\/td>Input<\/td>Serial data input (MOSI)<\/td><\/tr>
      6<\/td>SCK<\/td>Input<\/td>Serial clock input<\/td><\/tr>
      7<\/td>HOLD<\/td>Input<\/td>Suspend serial communication (active low)<\/td><\/tr>
      8<\/td>VCC<\/td>Power<\/td>Supply voltage (2.5-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial control parameter storage and calibration data retention exceeding 200 years<\/li>
      • Consumer electronics configuration and user preference storage with SPI interface<\/li>
      • Automotive system fault log and configuration storage with block write protection<\/li>
      • Medical device calibration data with >1M cycle endurance for frequent updates<\/li>
      • Networking equipment MAC address and serial number storage with write protect<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>25AA256T-I\/SN<\/td>SOIC-8<\/td>1.8V to 5.5V version<\/td><\/tr>
        STMicroelectronics<\/td>M95256-WMN6<\/td>SOIC-8<\/td>Pin-compatible, 2.5-5.5V<\/td><\/tr>
        onsemi<\/td>CAT25C256WI<\/td>SOIC-8<\/td>Pin-compatible alternative<\/td><\/tr>
        Rohm<\/td>BR25H256FVM-W<\/td>TSSOP-8<\/td>Smaller package option<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7070","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=7070"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7070\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7070"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7070"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}