{"id":10390,"date":"2026-07-19T13:07:43","date_gmt":"2026-07-19T13:07:43","guid":{"rendered":"https:\/\/ic-vendor.com\/at93c56b-mahm-t-2\/"},"modified":"2026-07-19T13:07:43","modified_gmt":"2026-07-19T13:07:43","slug":"at93c56b-mahm-t-2","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/at93c56b-mahm-t-2\/","title":{"rendered":"AT93C56B-MAHM-T"},"content":{"rendered":"

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

The Microchip AT93C56B-MAHM-T is a 2Kb Microwire (3-wire) Serial EEPROM organized as 256 x 8 or 128 x 16, selectable via the ORG pin. Housed in an 8-pad UDFN (2×3 mm) package, it operates from 1.7V to 5.5V with a maximum clock frequency of 2MHz at 5V. The device features more than 1 million erase\/write cycles, 100-year data retention, software write-protection, and factory programming availability. It is rated for the industrial temperature range of -40\u00b0C to +85\u00b0C.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Density<\/td>\n2 Kbit (256 x 8 \/ 128 x 16)<\/td>\n<\/tr>\n
Interface<\/td>\nMicrowire (3-wire: CS, SK, DI\/DO)<\/td>\n<\/tr>\n
Max Clock Frequency<\/td>\n2 MHz (at 5V)<\/td>\n<\/tr>\n
Operating Voltage<\/td>\n1.7V to 5.5V<\/td>\n<\/tr>\n
Write Cycle Time<\/td>\n5 ms max (self-timed)<\/td>\n<\/tr>\n
Endurance<\/td>\n1,000,000 write cycles<\/td>\n<\/tr>\n
Data Retention<\/td>\n100 years<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n8-UDFN (2×3 mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 2Kb Microwire serial EEPROM with selectable 8\/16-bit organization<\/li>\n
  • Wide operating voltage range: 1.7V to 5.5V<\/li>\n
  • Up to 2MHz clock frequency at 5V<\/li>\n
  • Self-timed erase and write cycles (5ms max)<\/li>\n
  • Software write-protection<\/li>\n
  • More than 1 million erase\/write cycles<\/li>\n
  • 100-year data retention<\/li>\n
  • Sequential read operation<\/li>\n
  • Factory programming available<\/li>\n
  • Space-saving 8-pad UDFN package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Consumer electronics configuration storage<\/li>\n
    • Industrial control parameter retention<\/li>\n
    • Automotive grade versions available<\/li>\n
    • Calibration data storage<\/li>\n
    • Embedded system boot configuration<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Microchip AT93C56B-MAHM-T is a 2Kb Microwire (3-wire) Serial EEPROM organized as 256 x 8 or 128 x 16, selectable via the ORG pin. Housed in an 8-pad UDFN (2×3 mm) package, it operates from 1.7V to 5.5V with a maximum clock frequency of 2MHz at 5V. The device features more than 1 […]<\/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":[1693],"chip_brand":[134],"class_list":["post-10390","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-at93c56b-mahm-t","chip_brand-microchip"],"acf":{"brief_explanation":"2Kb Microwire Serial EEPROM, 1.7-5.5V, 2MHz, UDFN-8","date_code":"","package_case":"8-UDFN (2x3 mm)","in_stock":9482,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/AT93C56B-AT93C66B-2-4-Kb-Microwire-Serial-EEPROM-DS20006260B.pdf","price":"$0.26 @ 5ku","product_introduction":"The Microchip AT93C56B-MAHM-T is a 2Kb Microwire (3-wire) Serial EEPROM with user-selectable 8-bit or 16-bit memory organization via the ORG pin. Optimized for consumer, industrial, and automotive applications requiring reliable nonvolatile memory storage, the device offers a wide operating voltage range of 1.7V to 5.5V and supports clock frequencies up to 2MHz. Available in a compact 8-pad UDFN package, the AT93C56B provides software write-protection and factory programming options for secure data storage in space-constrained designs.","working_principle":"The AT93C56B-MAHM-T communicates via the industry-standard Microwire 3-wire serial interface. 1) Interface Subsystem: The CS (Chip Select), SK (Serial Clock), and DI\/DO (Data In\/Data Out) pins provide the communication channel. The ORG pin selects between 8-bit (256x8) and 16-bit (128x16) organization. 2) Memory Array Subsystem: The 2Kb EEPROM array stores data in non-volatile cells that retain information for over 100 years without power. 3) Write Protection Subsystem: Software-controlled write protection prevents accidental data modification by requiring specific instruction sequences (EWEN\/EWDS) before write operations. 4) Self-Timed Write Subsystem: Once a write command is issued, the internal charge pump and timing circuit complete the programming cycle within 5ms without external intervention.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>CS<\/td>Input<\/td>Chip select (active-high)<\/td><\/tr>
      2<\/td>SK<\/td>Input<\/td>Serial data clock<\/td><\/tr>
      3<\/td>DI<\/td>Input<\/td>Serial data input<\/td><\/tr>
      4<\/td>DO<\/td>Output<\/td>Serial data output<\/td><\/tr>
      5<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      6<\/td>ORG<\/td>Input<\/td>Organization select (8-bit\/16-bit)<\/td><\/tr>
      7<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr>
      8<\/td>VCC<\/td>Power<\/td>Supply voltage (1.7-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Consumer Electronics: Configuration and calibration data storage<\/li>
      • Industrial Control: Parameter retention for sensors and actuators<\/li>
      • Automotive: Available in AEC-Q100 qualified grade<\/li>
      • Embedded Systems: Boot configuration and serial number storage<\/li>
      • Medical Devices: Patient settings and calibration data retention<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>AT93C56A-MAHM-T<\/td>UDFN-8<\/td>8-bit only organization<\/td><\/tr>
        Microchip<\/td>AT93C66B-MAHM-T<\/td>UDFN-8<\/td>4Kb, same family, double density<\/td><\/tr>
        ST<\/td>M93C46-WMN6<\/td>TSSOP-8<\/td>1Kb Microwire EEPROM<\/td><\/tr>
        onsemi<\/td>CAT93C46<\/td>SOIC-8<\/td>1Kb Microwire EEPROM<\/td><\/tr>
        Microchip<\/td>AT93C56B-SSH-T<\/td>SOIC-8<\/td>Same function, SOIC package<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10390","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=10390"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10390\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10390"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}