The AT45DB041E-SHN-T from Microchip is a 4Mbit DataFlash memory with SPI interface, 85MHz clock, dual SRAM buffers, and page-level operation in SOIC-8 for data logging.<\/p>\n
| \u5305\u88c5<\/td>\n | SOIC-8 (5.3×6.2mm)<\/td>\n<\/tr>\n<\/table>\n\u7279\u70b9<\/h2>\n\u5e94\u7528<\/h2>\nProduct Overview The AT45DB041E-SHN-T from Microchip is a 4Mbit DataFlash memory with SPI interface, 85MHz clock, dual SRAM buffers, and page-level operation in SOIC-8 for data logging. Key Specifications Package SOIC-8 (5.3×6.2mm) Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Power management<\/p>","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],"tags":[],"chip_brand":[134],"class_list":["post-5719","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"4Mbit DataFlash, SPI, 85MHz, SOIC-8","date_code":"","package_case":"SOIC-8 (5.3x6.2mm)","in_stock":11839,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/AT45DB041E","price":"$1.00 @ 1ku","product_introduction":"The AT45DB041E-SHN-T from Microchip is a 4Mbit DataFlash memory with SPI interface, 85MHz clock, dual SRAM buffers, and page-level operation in SOIC-8 for data logging.","working_principle":"The AT45DB041E-SHN-T is a 4Mbit (512KB) DataFlash from Dialog\/Renesas (formerly Adesto\/Atmel) in SOIC-16, with 85MHz SPI interface. Unlike standard SPI NOR Flash devices that use 256-byte sectors, the AT45DB041E uses a dual-SRAM buffer architecture: it contains two 256-byte SRAM buffers that allow page-write operations without erase cycles. To write data: (1) load data into Buffer 1 (or Buffer 2) via SPI, (2) issue a Buffer-to-Main-Memory-Page-Program command that copies the buffer to a flash page with auto-erase. This eliminates the separate erase step required by standard SPI Flash. The 4Mbit memory is organized as 2048 pages of 256 bytes each. The device supports three read modes: (1) Continuous Array Read - reads sequentially from any starting address; (2) Buffer Read - reads from the SRAM buffer; (3) Main Memory Page Read - reads a specific page with auto-buffer load. The dual buffers allow simultaneous read-from-one and write-to-other, enabling seamless data streaming. The WP pin protects the first two sectors (security sectors) from accidental writes, useful for storing boot code or configuration data. The Deep Power-Down mode reduces current to 7uA. The 85MHz SPI clock supports fast firmware boot and data logging. The DataFlash architecture is particularly suited for data logging applications where small writes are frequent.","pin_description":"
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