{"id":5367,"date":"2026-06-09T11:30:25","date_gmt":"2026-06-09T11:30:25","guid":{"rendered":"https:\/\/materialparts.com\/m27c256b-12f1\/"},"modified":"2026-06-09T11:30:25","modified_gmt":"2026-06-09T11:30:25","slug":"m27c256b-12f1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/m27c256b-12f1\/","title":{"rendered":"M27C256B-12F1"},"content":{"rendered":"

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

M27C256B-12F1 from ST is a 256Kbit (32Kx8) UV erasable EPROM with 120ns access time, 5V supply, FDIP-28 with quartz window.<\/p>\n

\u0645\u0628\u062f\u0623 \u0627\u0644\u0639\u0645\u0644<\/h2>\n

One-time programmable or UV-erasable EPROM. 32Kx8 organization. 120ns max access. Active read current 30mA. Quartz window for UV erasure. Standby mode 100uA. 100K erase cycles typical.<\/p>\n

Pin Description<\/h2>\n\n\n\n\n\n
\u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u062f\u0628\u0648\u0633<\/th>\n\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/th>\n<\/tr>\n
A0-A14<\/td>\nAddress inputs<\/td>\n15<\/td>\n<\/tr>\n
DQ0-DQ7<\/td>\nData I\/O<\/td>\n8<\/td>\n<\/tr>\n
CE,OE,PGM<\/td>\n\u0627\u0644\u062a\u062d\u0643\u0645<\/td>\n3<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
    \n
  • Firmware storage<\/li>\n
  • Legacy system repair<\/li>\n
  • Embedded code storage<\/li>\n<\/ul>\n

    Alternative Models<\/h2>\n\n\n\n
    Mfr<\/th>\nPart<\/th>\n\u0627\u0644\u0645\u0644\u0627\u062d\u0638\u0627\u062a<\/th>\n<\/tr>\n
    ST<\/td>\nM27C512-12F1<\/td>\n512Kbit version<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Product Overview M27C256B-12F1 from ST is a 256Kbit (32Kx8) UV erasable EPROM with 120ns access time, 5V supply, FDIP-28 with quartz window. Working Principle One-time programmable or UV-erasable EPROM. 32Kx8 organization. 120ns max access. Active read current 30mA. Quartz window for UV erasure. Standby mode 100uA. 100K erase cycles typical. Pin Description Pin Group Function […]<\/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],"tags":[],"chip_brand":[142],"class_list":["post-5367","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-st"],"acf":{"brief_explanation":"256Kbit UV EPROM, 120ns, FDIP-28","date_code":"","package_case":"FDIP-28 (35.7x13.0mm, 2.54mm pitch)","in_stock":3911,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/m27c256b.pdf","price":"$3.25 @ 1ku","product_introduction":"M27C256B-12F1 from ST is a 256Kbit (32Kx8) UV erasable EPROM with 120ns access time, 5V supply, FDIP-28 with quartz window.","working_principle":"One-time programmable or UV-erasable EPROM. 32Kx8 organization. 120ns max access. Active read current 30mA. Quartz window for UV erasure. Standby mode 100uA. 100K erase cycles typical.","pin_description":"
    Pin Group<\/th>Function<\/th><\/tr>
    A0-A14<\/td>Address inputs<\/td>15<\/td><\/tr>
    DQ0-DQ7<\/td>Data I\/O<\/td>8<\/td><\/tr>
    CE,OE,PGM<\/td>Control<\/td>3<\/td><\/tr><\/table>","application_scenarios":"
    • Firmware storage<\/li>
    • Legacy system repair<\/li>
    • Embedded code storage<\/li><\/ul>","alternative_models":"
      Mfr<\/th>Part<\/th>Notes<\/th><\/tr>
      ST<\/td>M27C512-12F1<\/td>512Kbit version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5367","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=5367"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5367\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=5367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=5367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=5367"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=5367"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}