{"id":9783,"date":"2026-07-06T10:10:57","date_gmt":"2026-07-06T10:10:57","guid":{"rendered":"https:\/\/materialparts.com\/at25df641a-sh-t\/"},"modified":"2026-07-06T10:10:57","modified_gmt":"2026-07-06T10:10:57","slug":"at25df641a-sh-t","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/at25df641a-sh-t\/","title":{"rendered":"AT25DF641A-SH-T"},"content":{"rendered":"<h2>\u4ea7\u54c1\u6982\u89c8<\/h2>\n<p>The AT25DF641A-SH-T from Renesas (formerly Atmel\/Microchip) is a 64Mbit SPI serial Flash memory with RapidS dual-I\/O support operating at 100MHz. The -SH denotes 8-SOIC package, and -T indicates tape-and-reel packaging. It features 4KB\/32KB\/64KB erase sectors and individual sector protection.<\/p>\n<h2>\u4e3b\u8981\u89c4\u683c<\/h2>\n<ul>\n<li>Type: 64Mbit SPI Serial Flash Memory<\/li>\n<li>Manufacturer: Renesas Electronics (formerly Atmel)<\/li>\n<li>Density: 64Mbit (8MB)<\/li>\n<li>Interface: SPI (Modes 0 and 3) + RapidS Dual-I\/O<\/li>\n<li>Clock Frequency: 100MHz (RapidS), 85MHz (SPI)<\/li>\n<li>Supply Voltage: 2.7V to 3.6V<\/li>\n<li>Erase Sectors: 4KB \/ 32KB \/ 64KB uniform + Full Chip<\/li>\n<li>Page Size: 256 bytes<\/li>\n<li>Page Program Time: 1ms typical<\/li>\n<li>4KB Erase Time: 50ms typical<\/li>\n<li>Endurance: 100,000 program\/erase cycles<\/li>\n<li>Data Retention: 20 years<\/li>\n<li>OTP Security Register: 128 bytes<\/li>\n<li>Package: 8-SOIC (5.3mm wide)<\/li>\n<li>Operating Temp: -40C to +85C<\/li>\n<li>MSL: 1 (Unlimited)<\/li>\n<li>RoHS: ROHS3 Compliant<\/li>\n<\/ul>\n<h2>\u7279\u70b9<\/h2>\n<ul>\n<li>100MHz RapidS dual-I\/O for fast code shadowing<\/li>\n<li>Flexible 4KB\/32KB\/64KB erase architecture<\/li>\n<li>Individual sector protection with global protect\/unprotect<\/li>\n<li>Sector lockdown for permanent read-only protection<\/li>\n<li>128-byte OTP security register<\/li>\n<li>Program\/erase suspend\/resume<\/li>\n<li>JEDEC standard ID read<\/li>\n<\/ul>\n<h2>\u5e94\u7528<\/h2>\n<ul>\n<li>Embedded system code storage<\/li>\n<li>FPGA configuration memory<\/li>\n<li>Boot firmware storage<\/li>\n<li>Data logging in industrial systems<\/li>\n<li>Consumer electronics firmware<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The AT25DF641A-SH-T from Renesas (formerly Atmel\/Microchip) is a 64Mbit SPI serial Flash memory with RapidS dual-I\/O support operating at 100MHz. The -SH denotes 8-SOIC package, and -T indicates tape-and-reel packaging. It features 4KB\/32KB\/64KB erase sectors and individual sector protection. Key Specifications Type: 64Mbit SPI Serial Flash Memory Manufacturer: Renesas Electronics (formerly Atmel) Density: [&hellip;]<\/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":[34,13],"tags":[1056],"chip_brand":[12],"class_list":["post-9783","post","type-post","status-publish","format-standard","hentry","category-battery-management-ics","category-integrated-circuits-ics","tag-at25df641a-sh-t","chip_brand-renesas"],"acf":{"brief_explanation":"64Mbit SPI Flash, 100MHz RapidS, 4KB\/32KB\/64KB erase, 8-SOIC, -40~85C, Renesas","date_code":"","package_case":"8-SOIC (5.30mm wide \/ 5.38 x 5.41 x 1.7mm)","in_stock":14178,"datasheet":"https:\/\/www.renesas.com\/us\/en\/products\/memory\/flash-memory\/at25df641a-64-mbit-27-v-spi-serial-flash-memory","price":"$1.50 @ 1ku","product_introduction":"The AT25DF641A-SH-T from Renesas is a 64Mbit SPI serial Flash memory with 100MHz RapidS dual-I\/O, flexible 4KB\/32KB\/64KB erase sectors, individual sector protection, and 128-byte OTP register in an 8-SOIC package.","working_principle":"The AT25DF641A communicates via SPI using standard commands (READ, PP, SE, BE) and RapidS dual-I\/O commands for higher throughput. The flexible erase architecture allows 4KB, 32KB, 64KB, or full chip erase. Sector protection is controlled via status register bits and the WP pin. The 128-byte OTP register can be used for unique device serialization or key storage. Program\/erase suspend allows reading from one sector while programming another.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Function<\/th><\/tr><tr><td>1<\/td><td>CS#<\/td><td>Chip Select (active low)<\/td><\/tr><tr><td>2<\/td><td>SO\/IO1<\/td><td>Serial Output \/ Dual IO1<\/td><\/tr><tr><td>3<\/td><td>WP#\/IO2<\/td><td>Write Protect \/ Dual IO2<\/td><\/tr><tr><td>4<\/td><td>GND<\/td><td>Ground<\/td><\/tr><tr><td>5<\/td><td>SI\/IO0<\/td><td>Serial Input \/ Dual IO0<\/td><\/tr><tr><td>6<\/td><td>SCK<\/td><td>Serial Clock<\/td><\/tr><tr><td>7<\/td><td>HOLD#\/IO3<\/td><td>Hold \/ Dual IO3<\/td><\/tr><tr><td>8<\/td><td>VCC<\/td><td>Power supply (2.7-3.6V)<\/td><\/tr><\/table>","application_scenarios":"<ul><li>Embedded system code storage<\/li><li>FPGA configuration memory<\/li><li>Boot firmware storage<\/li><li>Data logging in industrial systems<\/li><li>Consumer electronics firmware<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Spec1<\/th><th>Spec2<\/th><\/tr><tr><td>W25Q64JVSSIQ<\/td><td>Winbond<\/td><td>64Mbit SPI\/Quad<\/td><td>8-SOIC<\/td><\/tr><tr><td>MX25L6433FMI-10G<\/td><td>Macronix<\/td><td>64Mbit SPI\/Quad<\/td><td>8-SOIC<\/td><\/tr><tr><td>S25FL064LABNFI010<\/td><td>Infineon<\/td><td>64Mbit SPI\/Quad<\/td><td>8-SOIC<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9783","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=9783"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9783\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9783"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}