{"id":10583,"date":"2026-07-20T06:13:10","date_gmt":"2026-07-20T06:13:10","guid":{"rendered":"https:\/\/ic-vendor.com\/m93c66-wdw6tp\/"},"modified":"2026-07-20T06:13:10","modified_gmt":"2026-07-20T06:13:10","slug":"m93c66-wdw6tp","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/m93c66-wdw6tp\/","title":{"rendered":"M93C66-WDW6TP"},"content":{"rendered":"

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

The M93C66-WDW6TP from STMicroelectronics is a 4 Kbit MICROWIRE serial access EEPROM with dual organization (x8 or x16). It operates from 2.5V to 5.5V with clock frequencies up to 2 MHz. The device offers over 4 million write cycles and 200-year data retention, packaged in a TSSOP-8L footprint with 10-year longevity commitment.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Memory Size<\/td>\n4 Kbit (512 bytes x8 \/ 256 words x16)<\/td>\n<\/tr>\n
Interface<\/td>\nMICROWIRE (3-wire serial)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.5V to 5.5V (M93Cx6-W)<\/td>\n<\/tr>\n
Maximum Clock Frequency<\/td>\n2 MHz<\/td>\n<\/tr>\n
Write Cycle Time<\/td>\n5 ms (maximum)<\/td>\n<\/tr>\n
Write Endurance<\/td>\n4 million cycles at 25\u00b0C<\/td>\n<\/tr>\n
Data Retention<\/td>\n200 years<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
ESD Protection<\/td>\n4000V (Human Body Model)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nTSSOP-8L<\/td>\n<\/tr>\n
Organization<\/td>\nByte (x8) or Word (x16) selectable<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Industry-standard MICROWIRE bus compatible<\/li>\n
  • Dual organization: byte (x8) or word (x16) via ORG pin<\/li>\n
  • Sequential read operation for fast data access<\/li>\n
  • READY\/BUSY signal during programming<\/li>\n
  • Programming instructions for byte, word, or entire memory<\/li>\n
  • Enhanced ESD and latch-up protection (4000V HBM)<\/li>\n
  • Power-on reset circuit prevents inadvertent writes<\/li>\n
  • 10-year longevity commitment from STMicroelectronics<\/li>\n
  • Ecopack2 (RoHS compliant)<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial motor control boards for calibration data storage<\/li>\n
    • Automotive diagnostic tool parameter storage<\/li>\n
    • Embedded system configuration memory<\/li>\n
    • Consumer electronics settings retention<\/li>\n
    • Medical device calibration data<\/li>\n
    • Networking equipment MAC address storage<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The M93C66-WDW6TP from STMicroelectronics is a 4 Kbit MICROWIRE serial access EEPROM with dual organization (x8 or x16). It operates from 2.5V to 5.5V with clock frequencies up to 2 MHz. The device offers over 4 million write cycles and 200-year data retention, packaged in a TSSOP-8L footprint with 10-year longevity commitment. Key […]<\/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":[1919],"chip_brand":[142],"class_list":["post-10583","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-m93c66-wdw6tp","chip_brand-st"],"acf":{"brief_explanation":"4 Kbit MICROWIRE EEPROM, x8\/x16, 2.5-5.5V, 2MHz, 4M cycles, 200yr retention, TSSOP-8","date_code":"","package_case":"TSSOP-8L (3.0 x 4.4 x 1.0 mm)","in_stock":4567,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/m93c66-w.pdf","price":"$0.17 @ 1ku","product_introduction":"The M93C66-WDW6TP is a 4 Kbit electrically erasable programmable read-only memory (EEPROM) from STMicroelectronics, accessed through the MICROWIRE bus protocol. The memory array can be configured as 512 bytes (x8) or 256 words (x16) via the ORG pin. The M93Cx6-W series operates from 2.5V to 5.5V with clock frequencies up to 2 MHz. The device supports programming instructions that operate on individual bytes, words, or the entire memory (EWEN\/EWDS). A sequential read mode enables fast data retrieval. With over 4 million write cycles and 200-year data retention, the M93C66 is ideal for storing small configuration parameters, calibration data, and factory settings in industrial and automotive applications.","working_principle":"The M93C66-WDW6TP operates through three key subsystems:\n\n1. Memory Array: The 4 Kbit EEPROM array is organized as 512 x 8 bits (byte mode) or 256 x 16 bits (word mode), selectable via the ORG pin. Each cell uses floating-gate transistor technology to store charge representing data bits. The cells retain data for over 200 years without power.\n\n2. MICROWIRE Interface: Communication uses a 3-wire serial bus: Chip Select (S), Serial Clock (C), and Serial Data Input (D). A fourth line, Serial Data Output (Q), provides read data and READY\/BUSY status. Instructions (READ, WRITE, ERASE, EWEN, EWDS, ERAL, WRAL) are sent as opcode + address sequences clocked on the C line.\n\n3. Programming Control: Write and erase operations use Fowler-Nordheim tunneling to modify cell charge. During the 5 ms write cycle, the Q pin outputs a READY\/BUSY signal. A power-on reset (POR) circuit prevents inadvertent writes during power-up by keeping the device in a disabled state until VCC reaches a safe threshold. The Write Enable (EWEN) instruction must be issued before any write operation.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>S<\/td>Input<\/td>Chip Select (active high)<\/td><\/tr>
      2<\/td>D<\/td>Input<\/td>Serial Data Input<\/td><\/tr>
      3<\/td>Q<\/td>Output<\/td>Serial Data Output \/ READY-BUSY<\/td><\/tr>
      4<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>ORG<\/td>Input<\/td>Organization select: VSS = x8, VDD = x16<\/td><\/tr>
      6<\/td>DU<\/td>-<\/td>Don't use (leave unconnected or tie to VSS\/VDD)<\/td><\/tr>
      7<\/td>C<\/td>Input<\/td>Serial Clock<\/td><\/tr>
      8<\/td>VCC<\/td>Power<\/td>Supply voltage (2.5\u20135.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial motor control: Storage of PID parameters, encoder offsets, and factory calibration values with 200-year retention<\/li>
      • Automotive diagnostic tools: Vehicle-specific parameter tables and DTC lookup data with MICROWIRE interface compatibility<\/li>
      • Embedded systems: Boot configuration, serial number, and MAC address storage with byte\/word organization flexibility<\/li>
      • Consumer electronics: User preference and channel settings retention in audio\/video equipment<\/li>
      • Medical devices: Calibration coefficients and device identification with 4 million write cycle endurance<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        STMicroelectronics<\/td>M93C66-WMN6TP<\/td>SO8<\/td>Same device, SOIC package<\/td><\/tr>
        STMicroelectronics<\/td>M93C56-WDW6TP<\/td>TSSOP-8L<\/td>2 Kbit version, same pinout<\/td><\/tr>
        STMicroelectronics<\/td>M93C76-WDW6TP<\/td>TSSOP-8L<\/td>8 Kbit version, same pinout<\/td><\/tr>
        Microchip<\/td>93LC66B-I\/SN<\/td>SOIC-8<\/td>4 Kbit, MICROWIRE, x16 org<\/td><\/tr>
        onsemi<\/td>CAT93C66VI-G<\/td>SOIC-8<\/td>4 Kbit, 3-wire serial EEPROM<\/td><\/tr>
        Microchip<\/td>93AA66B-I\/ST<\/td>TSSOP-8<\/td>4 Kbit, 1.8V version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10583","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=10583"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10583\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10583"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}