{"id":10375,"date":"2026-07-19T12:47:45","date_gmt":"2026-07-19T12:47:45","guid":{"rendered":"https:\/\/ic-vendor.com\/at93c56b-sshm-b\/"},"modified":"2026-07-19T12:47:45","modified_gmt":"2026-07-19T12:47:45","slug":"at93c56b-sshm-b","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/at93c56b-sshm-b\/","title":{"rendered":"AT93C56B-SSHM-B"},"content":{"rendered":"

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

The AT93C56B-SSHM-B is a 2Kbit Microwire Serial EEPROM from Microchip (formerly Adesto\/Atmel), organized as 256 x 8 bits. It operates from 2.7V to 5.5V with Microwire-compatible 3-wire serial interface in an 8-pin SOIC package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Memory Density<\/td>\n2Kbit (256 bytes)<\/td>\n<\/tr>\n
Organization<\/td>\n256 x 8<\/td>\n<\/tr>\n
Interface<\/td>\nMicrowire (3-wire: CS, SK, DI\/DO)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.7V to 5.5V<\/td>\n<\/tr>\n
Write Cycle Time<\/td>\n5ms max<\/td>\n<\/tr>\n
Endurance<\/td>\n1,000,000 cycles<\/td>\n<\/tr>\n
Data Retention<\/td>\n100 years<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n8-SOIC<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Microwire-compatible 3-wire serial interface<\/li>\n
  • Software write protection<\/li>\n
  • Self-timed write cycle<\/li>\n
  • ORG pin selects x8 or x16 organization<\/li>\n
  • Wide military\/extended temperature range<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Legacy system configuration storage<\/li>\n
    • Military and aerospace applications<\/li>\n
    • Industrial controller parameters<\/li>\n
    • Telecom equipment configuration<\/li>\n
    • Analog circuit calibration data<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AT93C56B-SSHM-B is a 2Kbit Microwire Serial EEPROM from Microchip (formerly Adesto\/Atmel), organized as 256 x 8 bits. It operates from 2.7V to 5.5V with Microwire-compatible 3-wire serial interface in an 8-pin SOIC package. Key Specifications Memory Density 2Kbit (256 bytes) Organization 256 x 8 Interface Microwire (3-wire: CS, SK, DI\/DO) Supply Voltage […]<\/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":[40,4],"tags":[1677,1651,1678],"chip_brand":[134],"class_list":["post-10375","post","type-post","status-publish","format-standard","hentry","category-electrically-erasable-programmable-read-only-memory-eeprom","category-memory-chips","tag-at93c56b-sshm-b","tag-eeprom","tag-microwire","chip_brand-microchip"],"acf":{"brief_explanation":"2Kbit Microwire EEPROM, 256x8, 2.7-5.5V, 8-SOIC, -55~125\u00b0C","date_code":"","package_case":"8-SOIC (0.154\", 3.90mm width)","in_stock":4200,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/AT93C56B","price":"","product_introduction":"The AT93C56B-SSHM-B is a 2Kbit Microwire Serial EEPROM from Microchip, organized as 256 x 8 bits with a 3-wire Microwire-compatible serial interface. The 'B' suffix denotes the enhanced version with software data protection and ORG pin for x8\/x16 organization selection. The -M temperature suffix provides an extended -55\u00b0C to +125\u00b0C range suitable for military and aerospace applications. The 8-pin SOIC package offers a standard footprint compatible with legacy Microwire EEPROM designs.","working_principle":"The AT93C56B communicates via the Microwire protocol using 3 signals: CS (Chip Select), SK (Serial Clock), and DI\/DO (Data In\/Data Out, time-multiplexed). The ORG pin selects the data organization: tied low for 256 x 8 (8-bit mode) or tied high for 128 x 16 (16-bit mode). Write operations require an EWEN (Erase\/Write Enable) command before data can be written, and an EWDS (Erase\/Write Disable) command after. Software data protection prevents accidental writes during power transitions. All erase\/write cycles are self-timed with 5ms maximum duration.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>CS<\/td>Chip Select (active high)<\/td><\/tr>
      2<\/td>SK<\/td>Serial Clock<\/td><\/tr>
      3<\/td>DI<\/td>Data Input<\/td><\/tr>
      4<\/td>VSS<\/td>Ground<\/td><\/tr>
      5<\/td>DO<\/td>Data Output<\/td><\/tr>
      6<\/td>ORG<\/td>Organization Select (x8 or x16)<\/td><\/tr>
      7<\/td>NC<\/td>No Connect<\/td><\/tr>
      8<\/td>VCC<\/td>Power Supply<\/td><\/tr><\/table>","application_scenarios":"
      • Legacy Microwire-based system configuration storage<\/li>
      • Military and aerospace equipment parameter storage<\/li>
      • Industrial controller setup and calibration data<\/li>
      • Telecom equipment line card configuration<\/li>
      • Analog circuit trim and offset storage<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Density<\/th>Notes<\/th><\/tr>
        Microchip<\/td>93LC56B-I\/SN<\/td>2Kbit<\/td>Microchip Microwire EEPROM<\/td><\/tr>
        STMicro<\/td>M9356-WMN6P<\/td>2Kbit<\/td>Microwire EEPROM<\/td><\/tr>
        ON Semi<\/td>CAT93C56VI<\/td>2Kbit<\/td>Microwire EEPROM equivalent<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10375","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10375"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10375\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10375"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}