{"product_id":"am29f400b55ei-flash-memory-storage-solution","title":"AM29F400B-55EI 4 Mbit Flash Memory - Storage Solution","description":"\u003ch2\u003eAM29F400B-55EI 4 Mbit Flash Memory | High-Performance NOR Storage in 48-Pin TSOP\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAM29F400B-55EI\u003c\/strong\u003e is a high-performance \u003cstrong\u003e4 Mbit parallel NOR flash memory\u003c\/strong\u003e designed to provide reliable and flexible storage for embedded systems. With an organisation of \u003cstrong\u003e524,288 bytes (or 262,144 words × 16-bit)\u003c\/strong\u003e in a \u003cstrong\u003e48-pin TSOP package\u003c\/strong\u003e, this flash device suits a wide range of applications — firmware storage on industrial controllers, code memory for legacy embedded designs, calibration data on test equipment, and any system that needs reliable JEDEC-standard NOR flash with a long write-cycle endurance budget.\u003c\/p\u003e\n\u003cp\u003eThe chip operates on a \u003cstrong\u003esingle 5.0V power supply\u003c\/strong\u003e for read, erase, and program operations — eliminating the need for a separate 12V Vpp during write cycles and simplifying the power architecture around it. Access times as fast as \u003cstrong\u003e70ns\u003c\/strong\u003e support direct execute-in-place (XIP) workloads on slower microcontrollers, and the embedded algorithms automate the erase and program sequencing without the host MCU having to manage every step manually.\u003c\/p\u003e\n\u003ch3\u003eHigh-Speed Performance and Versatile Operation for Reliable Data Storage\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle 5.0V power supply\u003c\/strong\u003e — read, erase, and program from a single rail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-performance access times as fast as 70ns\u003c\/strong\u003e — supports XIP workloads on standard MCUs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow power consumption\u003c\/strong\u003e, including standby mode for battery-powered designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible sector structure\u003c\/strong\u003e for efficient data organisation in mixed-use storage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmbedded algorithms\u003c\/strong\u003e for automatic erase and program operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull chip erase and accidental write protection\u003c\/strong\u003e for data safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJEDEC standards compatibility\u003c\/strong\u003e — pinout and software-compatible with the standard NOR flash family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData# polling and toggle bit\u003c\/strong\u003e for operation completion detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErase suspend \/ erase resume\u003c\/strong\u003e for flexible erase operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuaranteed minimum 1,000,000 write cycles per sector\u003c\/strong\u003e — reliable for high-rewrite firmware update scenarios.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere the AM29F400B-55EI Fits\u003c\/h3\u003e\n\u003cp\u003eNOR flash at this density and access time is the workhorse code-storage IC for industrial controllers, legacy embedded designs, and any system that needs to store firmware, parameter tables, or calibration data with high write-cycle endurance and direct memory-mapped reads. The 48-pin TSOP footprint is the standard form factor across the AM29F4xx family, so the part drops into existing designs as a pin-compatible replacement when the original chip is hard to source.\u003c\/p\u003e\n\u003ch4\u003eAM29F400B-55EI Technical Features\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Type\u003c\/td\u003e\n\u003ctd\u003eParallel NOR Flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Organization\u003c\/td\u003e\n\u003ctd\u003e4 Mbit (524,288 bytes \/ 262,144 words × 16-bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e48-pin TSOP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eSingle 5.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccess Time\u003c\/td\u003e\n\u003ctd\u003eAs fast as 70ns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLow in standby and operation modes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSector Structure\u003c\/td\u003e\n\u003ctd\u003eFlexible sector layout for efficient data organisation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmbedded Algorithms\u003c\/td\u003e\n\u003ctd\u003eAutomatic erase and program sequences\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWrite Cycle Endurance\u003c\/td\u003e\n\u003ctd\u003eGuaranteed minimum 1,000,000 write cycles per sector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJEDEC Standards\u003c\/td\u003e\n\u003ctd\u003ePinout and software compatible with single-supply flash memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation Completion\u003c\/td\u003e\n\u003ctd\u003eData# polling and toggle bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eErase Suspend \/ Resume\u003c\/td\u003e\n\u003ctd\u003eFlexible erase operations with suspend \/ resume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eFAQ — AM29F400B-55EI NOR Flash\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this Top Boot or Bottom Boot?\u003c\/strong\u003e\u003cbr\u003eA: The \"B\" in AM29F400B indicates the bottom-boot variant (boot block at low addresses). For the top-boot variant, look for AM29F400T.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I program this with a standard universal programmer?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the AM29F400B is supported by all major universal programmers (XGecu T56, RT809H, MiniPro TL866II Plus, etc.) via the standard JEDEC parallel-NOR command set.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What's the typical sector size?\u003c\/strong\u003e\u003cbr\u003eA: The 4 Mbit array is divided into 11 sectors with a mixed boot-block + uniform-sector layout (the boot block is 16KB \/ 8KB \/ 8KB \/ 32KB at the boot end, and the rest are 64KB sectors).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it work at 3.3V?\u003c\/strong\u003e\u003cbr\u003eA: No — the AM29F400B is a 5V part. For 3.3V designs, use the AM29LV400B variant.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Bulk pricing available?\u003c\/strong\u003e\u003cbr\u003eA: Yes — email contact@lys-sz.com for tray-quantity pricing.\u003c\/p\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/h5tq2g63gfr-ddr3-memory-chip-whatsminer-cb2v8-control-board\"\u003eH5TQ2G63GFR DDR3 Memory Chip (Whatsminer CB2 V8)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/fm24c02b-wire-serial-eeprom-cryptominer-repair\"\u003eFM24C02B 2-Wire Serial EEPROM\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/original-stm32f103rbt6-mcu-32bit-arm-cortex-m3-lqfp64-motor-drive-industrial\"\u003eSTM32F103RBT6 32-bit Cortex-M3 MCU\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mimxrt1052cvl5b-microcontroller-32bit-cortex-m7-core-528mhz-lfbga\"\u003eMIMXRT1052CVL5B 528MHz Cortex-M7 MCU\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNeed AM29F400B-55EI in tray quantities for industrial firmware storage? Email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing and lead times. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":42630457852083,"sku":null,"price":3.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/AM29F400B-55E-4Mbit-Flash-Memory-High-Performance-Storage.webp?v=1745539480","url":"https:\/\/lys-sz.com\/products\/am29f400b55ei-flash-memory-storage-solution","provider":"LYS Shenzhen","version":"1.0","type":"link"}