{"id":3660,"date":"2026-06-07T13:03:39","date_gmt":"2026-06-07T13:03:39","guid":{"rendered":"https:\/\/materialparts.com\/at45db321e-shf2b-t\/"},"modified":"2026-06-07T13:03:39","modified_gmt":"2026-06-07T13:03:39","slug":"at45db321e-shf2b-t","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/at45db321e-shf2b-t\/","title":{"rendered":"AT45DB321E-SHF2B-T"},"content":{"rendered":"

Productos<\/h2>\n

The AT45DB321E-SHF2B-T from Adesto Technologies (formerly Atmel\/Microchip) is a 32-Mbit (4MB) DataFlash serial NOR Flash memory with 2 dual-SPI I\/O in an 8-pin SOIC package. Organized as 8192 pages of 528 bytes (512 + 16 extra), it provides flexible page-level operations with built-in SRAM buffers for high-reliability data logging.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Densidad<\/td>\n32 Mbit (4 MB)<\/td>\n<\/tr>\n
Interface<\/td>\nSPI \/ Dual-SPI<\/td>\n<\/tr>\n
Max Clock Frequency<\/td>\n66 MHz<\/td>\n<\/tr>\n
Page Size<\/td>\n528 bytes (512 + 16 extra)<\/td>\n<\/tr>\n
Pages<\/td>\n8192<\/td>\n<\/tr>\n
SRAM Buffers<\/td>\n2 x 528 bytes<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n2.3V to 3.6V<\/td>\n<\/tr>\n
Page Program Time<\/td>\n3.5 ms (typ)<\/td>\n<\/tr>\n
Endurance<\/td>\n100,000 program\/erase cycles<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n
Paquete<\/td>\nSOIC-8 (5.3mm width)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 32-Mbit DataFlash with dual-SPI support<\/li>\n
  • 2 x 528-byte SRAM buffers for page operations<\/li>\n
  • 528-byte page size (512 data + 16 extra bytes)<\/li>\n
  • Dual-SPI read at up to 66MHz (132Mbps throughput)<\/li>\n
  • Buffer read\/write while programming Flash<\/li>\n
  • Flexible page erase (single page or block)<\/li>\n
  • Hardware and software write protection<\/li>\n
  • Deep power-down mode with 5uA current<\/li>\n
  • JEDEC standard SFDP support<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Data logging and recording<\/li>\n
    • Industrial measurement systems<\/li>\n
    • Embedded firmware and parameter storage<\/li>\n
    • Automotive black box recording<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AT45DB321E-SHF2B-T from Adesto Technologies (formerly Atmel\/Microchip) is a 32-Mbit (4MB) DataFlash serial NOR Flash memory with 2 dual-SPI I\/O in an 8-pin SOIC package. Organized as 8192 pages of 528 bytes (512 + 16 extra), it provides flexible page-level operations with built-in SRAM buffers for high-reliability data logging. Key Specifications Density 32 […]<\/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":[13,20],"tags":[],"chip_brand":[214],"class_list":["post-3660","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-adesto"],"acf":{"brief_explanation":"32-Mbit DataFlash, dual-SPI, 528B page, 2 SRAM buffers, SOIC-8","date_code":"","package_case":"SOIC-8 (5.30 x 8.00 x 1.75 mm)","in_stock":6697,"datasheet":"https:\/\/www.adestotech.com\/wp-content\/uploads\/AT45DB321E-DataFlash.pdf","price":"$1.45 @ 1ku","product_introduction":"The AT45DB321E-SHF2B-T from Adesto Technologies is a 32-Mbit DataFlash serial NOR Flash memory in an 8-pin SOIC package. The SHF2B suffix denotes the SOIC-8 package with dual-SPI (2-I\/O) capability and tape and reel packaging. Unlike standard SPI Flash with 256-byte pages, the DataFlash architecture uses 528-byte pages (512 data + 16 spare) with two built-in 528-byte SRAM buffers. This allows simultaneous buffer read\/write operations while the Flash array is being programmed, enabling seamless data streaming for logging applications. The dual-SPI interface doubles read throughput to 132Mbps at 66MHz clock.","working_principle":"The AT45DB321E operates through four subsystems: (1) Dual SRAM Buffers: Two independent 528-byte buffers allow data to be written into one buffer while the other is being transferred to the Flash array, enabling continuous data streaming without wait states. Buffer-to-Flash transfer takes 3.5ms typical. (2) SPI Command Interface: A standard SPI bus with extended command set supports single and dual-SPI modes. In dual-SPI mode, SI and SO pins are repurposed as I\/O0 and I\/O1 for 2-bit wide transfers. (3) Page Architecture: The memory is organized as 8192 pages of 528 bytes each (512 data + 16 extra bytes for ECC or metadata). Sector and block erase provide flexible erase granularity. (4) Protection: Software write protection via sector lockdown, and hardware write protect via WP pin. Deep power-down mode reduces current to 5uA.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>\/CS<\/td>Input<\/td>Chip select (active low)<\/td><\/tr>
      2<\/td>SI (I\/O0)<\/td>I\/O<\/td>Serial input \/ Dual data 0<\/td><\/tr>
      3<\/td>\/WP<\/td>Input<\/td>Write protect<\/td><\/tr>
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>SO (I\/O1)<\/td>I\/O<\/td>Serial output \/ Dual data 1<\/td><\/tr>
      6<\/td>\/RESET<\/td>Input<\/td>Reset (active low)<\/td><\/tr>
      7<\/td>SCK<\/td>Input<\/td>Serial clock (up to 66MHz)<\/td><\/tr>
      8<\/td>VCC<\/td>Power<\/td>Supply voltage (2.3-3.6V)<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial data logging with dual SRAM buffers for continuous streaming without pause<\/li>
      • Automotive black box event recording with 528-byte page + 16-byte spare for ECC<\/li>
      • Embedded firmware parameter storage with buffer-write-while-flash-program concurrency<\/li>
      • Measurement system data acquisition with dual-SPI 132Mbps read throughput<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Density<\/th>Speed<\/th>Notes<\/th><\/tr>
        AT45DB321E-SSHF-B<\/td>Adesto<\/td>32Mbit<\/td>66MHz<\/td>Same, different package<\/td><\/tr>
        S25FL032P0XMFI013<\/td>Infineon<\/td>32Mbit<\/td>104MHz<\/td>Standard SPI Flash<\/td><\/tr>
        W25Q32JVSSIQ<\/td>Winbond<\/td>32Mbit<\/td>133MHz<\/td>Standard SPI Flash<\/td><\/tr>
        AT25XE321D-SHF2B-T<\/td>Adesto<\/td>32Mbit<\/td>85MHz<\/td>Newer DataFlash<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3660","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=3660"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3660\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3660"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}