{"id":7568,"date":"2026-06-26T04:40:00","date_gmt":"2026-06-26T04:40:00","guid":{"rendered":"https:\/\/materialparts.com\/at45db081e-sshn2b-t\/"},"modified":"2026-06-26T04:40:00","modified_gmt":"2026-06-26T04:40:00","slug":"at45db081e-sshn2b-t","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/at45db081e-sshn2b-t\/","title":{"rendered":"AT45DB081E-SSHN2B-T"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The AT45DB081E-SSHN2B-T is an 8-Mbit (1MB) DataFlash SPI serial Flash memory with dual SRAM buffers, 85MHz max clock, and 1.7V to 3.6V operation in 8-lead SOIC package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Memory Density<\/td>\n8 Mbit (1,048,576 x 8 + extra 256 Kbit)<\/td>\n<\/tr>\n
Organization<\/td>\n4,096 pages of 256\/264 bytes<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nSPI (Mode 0 and Mode 3), RapidS compatible<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0633\u0627\u0639\u0629<\/td>\n85 MHz<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n1.7 V to 3.6 V<\/td>\n<\/tr>\n
\u0645\u062e\u0627\u0632\u0646 SRAM \u0627\u0644\u0645\u0624\u0642\u062a\u0629<\/td>\n2 x 256\/264 bytes (dual independent)<\/td>\n<\/tr>\n
Page Program Time<\/td>\nSelf-timed<\/td>\n<\/tr>\n
Endurance<\/td>\n100,000 program\/erase cycles per page<\/td>\n<\/tr>\n
\u0627\u0644\u0627\u062d\u062a\u0641\u0627\u0638 \u0628\u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\n20 years<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0642\u0631\u0627\u0621\u0629 \u0627\u0644\u0646\u0634\u0637 \u0644\u0644\u0642\u0631\u0627\u0621\u0629 \u0627\u0644\u0646\u0634\u0637\u0629<\/td>\n11 mA typical @ 20MHz<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0627\u062d\u062a\u064a\u0627\u0637\u064a<\/td>\n25 uA typical<\/td>\n<\/tr>\n
Deep Power-Down<\/td>\n4.5 uA typical<\/td>\n<\/tr>\n
Ultra-Deep Power-Down<\/td>\n400 nA typical<\/td>\n<\/tr>\n
OTP Security Register<\/td>\n128 bytes (64 factory + 64 user)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n8-lead SOIC (0.208 inch wide)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Dual independent SRAM buffers for simultaneous read\/write<\/li>\n
  • 85MHz RapidS SPI interface for high-speed data throughput<\/li>\n
  • Flexible erase: page (256B), block (2KB), sector (64KB), chip<\/li>\n
  • Program and erase suspend\/resume capability<\/li>\n
  • Individual sector protection and lockdown with OTP register<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Digital voice and image storage<\/li>\n
    • Embedded system firmware and data logging<\/li>\n
    • Industrial data acquisition with dual-buffer streaming<\/li>\n
    • Configuration storage for FPGAs and CPLDs<\/li>\n
    • EEPROM emulation using buffer read-modify-write<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AT45DB081E-SSHN2B-T is an 8-Mbit (1MB) DataFlash SPI serial Flash memory with dual SRAM buffers, 85MHz max clock, and 1.7V to 3.6V operation in 8-lead SOIC package. Key Specifications Memory Density 8 Mbit (1,048,576 x 8 + extra 256 Kbit) Organization 4,096 pages of 256\/264 bytes Interface SPI (Mode 0 and Mode 3), […]<\/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":[40,13],"tags":[],"chip_brand":[134],"class_list":["post-7568","post","type-post","status-publish","format-standard","hentry","category-electrically-erasable-programmable-read-only-memory-eeprom","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"8Mbit DataFlash SPI, dual SRAM buffers, 85MHz, SOIC-8","date_code":"","package_case":"8-lead SOIC (0.208 inch, 5.3 x 8.0 mm)","in_stock":46000,"datasheet":"https:\/\/www.renesas.com\/en\/document\/dst\/at45db081e-datasheet","price":"$1.34 @ 2.5ku","product_introduction":"The AT45DB081E-SSHN2B-T is an 8-Mbit DataFlash serial Flash memory with dual SRAM buffers in 8-lead SOIC package. The device supports SPI Mode 0 and Mode 3 with RapidS operation up to 85MHz. The unique dual-buffer architecture allows simultaneous data reception while reprogramming the main memory array, enabling continuous data streaming in logging applications. The page size is configurable as 256 or 264 bytes (factory pre-configurable). The device features individual sector protection, sector lockdown, and a 128-byte OTP security register with 64 bytes factory-programmed unique identifier and 64 bytes user-programmable. The SSHN2B-T suffix denotes 8-lead SOIC (0.208 inch) with tape and reel packaging. Originally designed by Atmel\/Adesto, now produced by Renesas.","working_principle":"The AT45DB081E-SSHN2B-T operates as a sequential-access DataFlash memory with dual SRAM buffers. (1) Unlike standard SPI Flash memories that use sector-based erase and page-based program, the DataFlash uses a page-based architecture with 4,096 pages of 256\/264 bytes each. The dual SRAM buffers (Buffer 1 and Buffer 2) allow the host to write data into one buffer while the other buffer is being programmed into the main memory array. This ping-pong operation enables continuous data streaming without wait states. (2) The SPI interface uses standard opcodes for all operations. A typical write sequence involves: loading data into a buffer via Buffer Write command, then issuing a Buffer-to-Main-Memory Page Program with Built-In Erase command. The erase and program are self-timed, and the host can poll the status register (bit 7) to determine when the operation completes. (3) The RapidS serial interface provides up to 85MHz clock rate for high-speed continuous read operations across the entire memory array. The configurable page size (256 vs 264 bytes) allows compatibility with both binary-addressed and traditional DataFlash systems. The program\/erase suspend\/resume feature allows interrupting a long erase operation to read from a different sector, critical for real-time data logging applications.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>CS<\/td>Chip Select (active low)<\/td><\/tr>
      2<\/td>SO<\/td>Serial Output (data out on falling SCK)<\/td><\/tr>
      3<\/td>WP<\/td>Write Protect (sector protection enable)<\/td><\/tr>
      4<\/td>VSS<\/td>Ground<\/td><\/tr>
      5<\/td>SI<\/td>Serial Input (data in on rising SCK)<\/td><\/tr>
      6<\/td>SCK<\/td>Serial Clock<\/td><\/tr>
      7<\/td>RESET<\/td>Hardware Reset (active low)<\/td><\/tr>
      8<\/td>VCC<\/td>Power Supply (1.7-3.6V)<\/td><\/tr><\/table>","application_scenarios":"
      • Digital voice recording and image storage with dual-buffer streaming<\/li>
      • Embedded system firmware storage with 85MHz RapidS read<\/li>
      • Industrial data acquisition with continuous write and suspend\/resume<\/li>
      • FPGA\/CPLD configuration storage with sector protection<\/li>
      • EEPROM emulation using buffer read-modify-write operation<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        AT45DB161E-SSHN2B-T<\/td>Renesas<\/td>16Mbit, same family<\/td><\/tr>
        SST25PF020C-40I\/SN<\/td>Microchip<\/td>2Mbit, standard SPI, no buffers<\/td><\/tr>
        M25P80-VMN6P<\/td>Microchip<\/td>8Mbit, standard SPI, 75MHz<\/td><\/tr>
        W25Q80DVSNIG<\/td>Winbond<\/td>8Mbit, standard SPI, 104MHz<\/td><\/tr>
        S25FL801K0MFI041<\/td>Infineon<\/td>8Mbit, standard SPI, 104MHz<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=7568"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7568\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7568"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7568"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}