{"id":7542,"date":"2026-06-26T04:21:41","date_gmt":"2026-06-26T04:21:41","guid":{"rendered":"https:\/\/materialparts.com\/sst25pf040c-40i-sn\/"},"modified":"2026-06-26T04:21:41","modified_gmt":"2026-06-26T04:21:41","slug":"sst25pf040c-40i-sn","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/sst25pf040c-40i-sn\/","title":{"rendered":"SST25PF040C-40I\/SN"},"content":{"rendered":"

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

The SST25PF040C-40I\/SN from Microchip Technology is a 4Mbit (512K x 8) SPI serial Flash memory with SuperFlash technology, 40MHz clock, and dual I\/O support in 8-pin SOIC package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Density<\/td>\n4 Mbit (512K x 8)<\/td>\n<\/tr>\n
Interface<\/td>\nSPI (Mode 0 and Mode 3)<\/td>\n<\/tr>\n
Max Clock Frequency<\/td>\n40 MHz<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.3V to 3.6V<\/td>\n<\/tr>\n
Active Read Current<\/td>\n5 mA typical<\/td>\n<\/tr>\n
Standby Current<\/td>\n5 uA typical<\/td>\n<\/tr>\n
Sector Size<\/td>\n4 KB uniform sectors<\/td>\n<\/tr>\n
Block Size<\/td>\n64 KB overlay blocks<\/td>\n<\/tr>\n
Page Size<\/td>\n256 bytes<\/td>\n<\/tr>\n
Endurance<\/td>\n100,000 cycles<\/td>\n<\/tr>\n
Data Retention<\/td>\n> 20 years<\/td>\n<\/tr>\n
AEC-Q100<\/td>\nYes<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n8-SOIC (SN suffix)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • SuperFlash technology for low energy and high reliability<\/li>\n
  • Dual I\/O fast-read instructions for 2x data throughput<\/li>\n
  • 4KB uniform sectors and 64KB overlay blocks for flexible erase<\/li>\n
  • Software write protection via block-protection bits<\/li>\n
  • AEC-Q100 qualified for automotive applications<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Automotive ECU firmware storage<\/li>\n
    • Embedded system boot Flash<\/li>\n
    • Industrial equipment parameter storage<\/li>\n
    • Consumer electronics code storage<\/li>\n
    • IoT device firmware update storage<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SST25PF040C-40I\/SN from Microchip Technology is a 4Mbit (512K x 8) SPI serial Flash memory with SuperFlash technology, 40MHz clock, and dual I\/O support in 8-pin SOIC package. Key Specifications Density 4 Mbit (512K x 8) Interface SPI (Mode 0 and Mode 3) Max Clock Frequency 40 MHz Supply Voltage 2.3V to 3.6V […]<\/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":[26,13],"tags":[],"chip_brand":[134],"class_list":["post-7542","post","type-post","status-publish","format-standard","hentry","category-digital-signal-processors-dsp","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"4Mbit SPI Flash, 40MHz, dual I\/O, SOIC-8, AEC-Q100","date_code":"","package_case":"8-SOIC (4.9 x 3.9 x 1.25 mm)","in_stock":8901,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/SST25PF040C","price":"$0.55 @ 1ku","product_introduction":"The SST25PF040C-40I\/SN from Microchip Technology is a 4Mbit SPI serial Flash memory manufactured with proprietary SuperFlash CMOS technology. The device features a four-wire SPI-compatible interface (Mode 0 and Mode 3) operating at up to 40MHz, with dual I\/O fast-read instructions for increased data throughput. The 2.3V to 3.6V single-voltage read and write operation simplifies power supply design. The flexible erase architecture includes 4KB uniform sectors and 64KB overlay blocks. The SuperFlash split-gate cell design with thick-oxide tunneling injector provides superior reliability with 100,000 cycle endurance and greater than 20-year data retention. The device is AEC-Q100 qualified for automotive applications. The 40I\/SN suffix denotes 40MHz, industrial temperature range, and 8-SOIC package.","working_principle":"The SST25PF040C-40I\/SN operates as an SPI serial Flash memory. (1) The SuperFlash split-gate cell design uses a thick-oxide tunneling injector for programming and erasing. Compared to standard stacked-gate NOR Flash, the split-gate architecture prevents over-erase, provides lower programming current, and shorter erase time, resulting in lower total energy consumption during write operations. (2) The SPI interface uses four signal lines: CE# (chip enable), SCK (serial clock), SI\/SIO0 (serial input), and SO\/SIO1 (serial output). Standard read operations shift address and data serially at up to 40MHz. Dual-output fast-read (3BH) uses both SI and SO pins for 2x data output rate. Dual I\/O fast-read (BBH) uses both pins for address input and data output, further reducing access time. (3) Write operations require the Write-Enable (WREN) instruction before any program or erase. The Block-Protection bits (BP0, BP1, BP2, TB) in the status register control write protection for different memory regions. The BPL (Block-Protection Lock-Down) bit, enabled by the WP# pin, makes protection bits read-only for permanent write protection.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>CE#<\/td>Chip enable (active low)<\/td><\/tr>
      2<\/td>SO\/SIO1<\/td>Serial output \/ dual I\/O data 1<\/td><\/tr>
      3<\/td>WP#<\/td>Write protect (active low)<\/td><\/tr>
      4<\/td>VSS<\/td>Ground<\/td><\/tr>
      5<\/td>SI\/SIO0<\/td>Serial input \/ dual I\/O data 0<\/td><\/tr>
      6<\/td>SCK<\/td>Serial clock<\/td><\/tr>
      7<\/td>HOLD#<\/td>Suspend serial sequence<\/td><\/tr>
      8<\/td>VDD<\/td>Power supply (2.3-3.6V)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive ECU firmware storage with AEC-Q100 qualification<\/li>
      • Embedded system boot Flash with 40MHz SPI interface<\/li>
      • Industrial equipment parameter storage with 100K cycle endurance<\/li>
      • Consumer electronics code storage with dual I\/O fast read<\/li>
      • IoT device firmware update storage with write protection<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        SST25PF020C-40I\/SN<\/td>Microchip<\/td>2Mbit, same family<\/td><\/tr>
        SST26VF032B-104I\/SN<\/td>Microchip<\/td>32Mbit, Quad SPI, SST26<\/td><\/tr>
        AT25SF041-SSHD-B<\/td>Microchip<\/td>4Mbit, SPI, SOIC-8<\/td><\/tr>
        W25X40CLSNIG<\/td>Winbond<\/td>4Mbit, SPI\/Dual, SOIC-8<\/td><\/tr>
        M25P40-VMN6P<\/td>ST<\/td>4Mbit, 50MHz, SOIC-8<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=7542"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7542\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7542"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}