{"id":8491,"date":"2026-06-29T02:54:32","date_gmt":"2026-06-29T02:54:32","guid":{"rendered":"https:\/\/materialparts.com\/at45db081e-shn-b\/"},"modified":"2026-06-29T06:28:07","modified_gmt":"2026-06-29T06:28:07","slug":"at45db081e-shn-b","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/at45db081e-shn-b\/","title":{"rendered":"AT45DB081E-SHN-B"},"content":{"rendered":"

Productos<\/h2>\n

The AT45DB081E-SHN-B from Renesas (formerly Dialog\/Atmel) is an 8-Mbit (1 MB) DataFlash serial Flash memory with two 256-byte SRAM buffers in an 8-lead SOIC package. It features a SPI-compatible serial interface, rapid page erase, and dual-buffer write architecture that enables continuous data streaming without wait states, making it ideal for data logging and firmware storage.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Densidad<\/td>\n8 Mbit (1,032,192 bytes)<\/td>\n<\/tr>\n
Organization<\/td>\n4096 pages x 256 bytes + 2 buffers<\/td>\n<\/tr>\n
Interface<\/td>\nSPI (Mode 0 and 3)<\/td>\n<\/tr>\n
Max SPI Clock<\/td>\n85 MHz<\/td>\n<\/tr>\n
SRAM Buffers<\/td>\n2 x 256 bytes<\/td>\n<\/tr>\n
Page Program Time<\/td>\n3.5 ms typ<\/td>\n<\/tr>\n
Page Erase Time<\/td>\n35 ms typ<\/td>\n<\/tr>\n
Sector Erase<\/td>\n4 KB \/ 256 KB \/ full chip<\/td>\n<\/tr>\n
Endurance<\/td>\n100,000 program\/erase cycles<\/td>\n<\/tr>\n
Data Retention<\/td>\n20 years<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n2.5V to 3.6V<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nSOIC-8 (5.3 x 8 mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Dual 256-byte SRAM buffers for seamless data streaming<\/li>\n
  • SPI compatible: Mode 0 and Mode 3<\/li>\n
  • 85 MHz maximum SPI clock frequency<\/li>\n
  • Rapid page erase and program operations<\/li>\n
  • Flexible sector erase: 4 KB, 256 KB, or full chip<\/li>\n
  • Built-in erase\/program status polling<\/li>\n
  • Hardware and software write protection<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Data logging and acquisition systems<\/li>\n
    • Voice and audio storage<\/li>\n
    • Firmware and parameter storage<\/li>\n
    • Digital cameras and printers<\/li>\n
    • Industrial control program storage<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AT45DB081E-SHN-B from Renesas (formerly Dialog\/Atmel) is an 8-Mbit (1 MB) DataFlash serial Flash memory with two 256-byte SRAM buffers in an 8-lead SOIC package. It features a SPI-compatible serial interface, rapid page erase, and dual-buffer write architecture that enables continuous data streaming without wait states, making it ideal for data logging and […]<\/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":[13,20],"tags":[],"chip_brand":[134],"class_list":["post-8491","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-microchip"],"acf":{"brief_explanation":"8Mbit DataFlash, dual 256B SRAM buffers, SPI 85MHz, SOIC-8, continuous write","date_code":"","package_case":"SOIC-8 (5.3 x 8.0 x 1.8 mm)","in_stock":11847,"datasheet":"https:\/\/www.renesas.com\/us\/en\/products\/memory-logic\/data-flash\/at45db081e-ssh-shn-b","price":"$1.15 @ 1ku","product_introduction":"The Renesas AT45DB081E-SHN-B is an 8-Mbit DataFlash serial Flash memory optimized for applications requiring continuous data streaming and rapid write operations. Unlike standard SPI Flash memories, it integrates two 256-byte SRAM buffers that allow data to be written into one buffer while the other is being programmed into the Flash array, enabling gapless data capture. The 85 MHz SPI interface supports high-speed data transfer, while the flexible erase architecture (4 KB, 256 KB, and full chip erase) provides efficient storage management. The DataFlash architecture with page-level operation eliminates the block-level erase constraints of standard SPI NOR Flash, making it particularly suitable for data logging where small, frequent writes are required.","working_principle":"The AT45DB081E-SHN-B uses a unique dual-buffer DataFlash architecture that differs from standard SPI NOR Flash. The memory array is organized as 4096 pages of 256 bytes each, plus two independent 256-byte SRAM buffers. To write data, the host first fills Buffer 1 (or Buffer 2) via SPI with up to 256 bytes. Once the buffer is loaded, a Buffer-to-Page command programs the buffer contents into a specified Flash page in 3.5 ms. During this programming time, the host can continue filling the alternate buffer with the next page of data. This ping-pong buffer scheme enables continuous data streaming at the full SPI data rate without wait states. The device also supports Page-to-Buffer transfers for reading, and Buffer-to-Page with built-in erase operations. The SPI interface supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) at clock rates up to 85 MHz. Sector protection registers and lockdown features prevent accidental erasure of critical firmware or calibration data.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>SI<\/td>SPI Serial Data Input (MOSI)<\/td><\/tr>
      2<\/td>SCK<\/td>SPI Serial Clock<\/td><\/tr>
      3<\/td>RESET#<\/td>Hardware Reset (active low)<\/td><\/tr>
      4<\/td>CS#<\/td>Chip Select (active low)<\/td><\/tr>
      5<\/td>WP<\/td>Hardware Write Protect<\/td><\/tr>
      6<\/td>VCC<\/td>Supply Voltage (2.5-3.6V)<\/td><\/tr>
      7<\/td>GND<\/td>Ground<\/td><\/tr>
      8<\/td>SO<\/td>SPI Serial Data Output (MISO)<\/td><\/tr><\/table>","application_scenarios":"
      • Data Logging<\/b>: Dual-buffer architecture enables continuous sensor data capture at high rates without stopping to wait for Flash program cycles<\/li>
      • Audio\/Voice Storage<\/b>: 8 Mbit capacity storing minutes of compressed audio with ping-pong buffer ensuring gapless record and playback<\/li>
      • Firmware Update<\/b>: Page-level write granularity for OTA firmware updates with sector protection preventing corruption of running code<\/li>
      • Digital Camera<\/b>: Image buffer storage with rapid page program supporting burst capture mode in embedded camera modules<\/li>
      • Industrial Parameter Storage<\/b>: 100K cycle endurance with 4 KB sector erase for frequent calibration and configuration data updates<\/li><\/ul>","alternative_models":"
        Model<\/th>Brand<\/th>Density<\/th>Buffers<\/th>Package<\/th><\/tr>
        AT45DB041E-SHN-B<\/td>Renesas<\/td>4 Mbit<\/td>2x256B<\/td>SOIC-8<\/td><\/tr>
        AT45DB161E-SHD-B<\/td>Renesas<\/td>16 Mbit<\/td>2x512B<\/td>SOIC-8<\/td><\/tr>
        W25Q80DVSNIG<\/td>Winbond<\/td>8 Mbit<\/td>No<\/td>SOIC-8<\/td><\/tr>
        M25P80-VMN6P<\/td>ST<\/td>8 Mbit<\/td>No<\/td>SOIC-8<\/td><\/tr>
        SST25VF080B-50-4I-S2<\/td>Microchip<\/td>8 Mbit<\/td>No<\/td>SOIC-8<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8491","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=8491"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8491\/revisions"}],"predecessor-version":[{"id":8492,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8491\/revisions\/8492"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8491"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}