{"id":8370,"date":"2026-06-28T12:43:12","date_gmt":"2026-06-28T12:43:12","guid":{"rendered":"https:\/\/materialparts.com\/m24256-bwmn6tp\/"},"modified":"2026-06-28T12:43:12","modified_gmt":"2026-06-28T12:43:12","slug":"m24256-bwmn6tp","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/m24256-bwmn6tp\/","title":{"rendered":"M24256-BWMN6TP"},"content":{"rendered":"<h2>Productos<\/h2>\n<p>The M24256-BWMN6TP from STMicroelectronics is a 256-Kbit I2C EEPROM in an SO-8 package. With 4 MHz I2C compatibility, 4 ms write time, 4 million write cycle endurance, and 200-year data retention, it is designed for parameter storage and configuration data in industrial and consumer applications.<\/p>\n<h2>Especificaciones<\/h2>\n<table>\n<tr>\n<td>Densidad<\/td>\n<td>256 Kbit (32 KB)<\/td>\n<\/tr>\n<tr>\n<td>Interface<\/td>\n<td>I2C up to 1 MHz<\/td>\n<\/tr>\n<tr>\n<td>Write Time<\/td>\n<td>4 ms (byte\/page)<\/td>\n<\/tr>\n<tr>\n<td>Page Size<\/td>\n<td>64 bytes<\/td>\n<\/tr>\n<tr>\n<td>Endurance<\/td>\n<td>4 million write cycles<\/td>\n<\/tr>\n<tr>\n<td>Data Retention<\/td>\n<td>200 years<\/td>\n<\/tr>\n<tr>\n<td>Tensi\u00f3n de alimentaci\u00f3n<\/td>\n<td>1.8 V to 5.5 V<\/td>\n<\/tr>\n<tr>\n<td>Temperatura de funcionamiento<\/td>\n<td>-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Paquete<\/td>\n<td>SO-8<\/td>\n<\/tr>\n<\/table>\n<h2>Caracter\u00edsticas<\/h2>\n<ul>\n<li>256 Kbit density organized as 32K x 8 bits<\/li>\n<li>High-speed I2C interface up to 1 MHz (I2C Fast-mode Plus)<\/li>\n<li>64-byte page write for efficient bulk data storage<\/li>\n<li>4 million write cycle endurance and 200-year data retention<\/li>\n<li>Hardware write protection via WP pin<\/li>\n<li>Additional 512-bit identification page with permanent lock<\/li>\n<\/ul>\n<h2>Aplicaciones<\/h2>\n<ul>\n<li>Industrial parameter and calibration storage<\/li>\n<li>Consumer device configuration data<\/li>\n<li>Smart meter data logging<\/li>\n<li>Automotive ECU calibration storage<\/li>\n<li>Board serial number and asset tracking<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The M24256-BWMN6TP from STMicroelectronics is a 256-Kbit I2C EEPROM in an SO-8 package. With 4 MHz I2C compatibility, 4 ms write time, 4 million write cycle endurance, and 200-year data retention, it is designed for parameter storage and configuration data in industrial and consumer applications. Key Specifications Density 256 Kbit (32 KB) Interface [&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":[19,13],"tags":[],"chip_brand":[142],"class_list":["post-8370","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-st"],"acf":{"brief_explanation":"256Kbit I2C EEPROM, 1MHz, 4M cycles, 200yr retention, SO-8","date_code":"","package_case":"SO-8 (4.90 x 3.90 x 1.45 mm)","in_stock":6334,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/m24256.pdf","price":"$0.55 @ 1ku","product_introduction":"The M24256-BWMN6TP from STMicroelectronics is a 256-Kbit (32 KB) electrically erasable programmable read-only memory (EEPROM) with an I2C serial interface in an SO-8 surface-mount package. The device supports I2C Fast-mode Plus at up to 1 MHz, providing fast data throughput for parameter storage and configuration data management. The 64-byte page write mode allows writing up to 64 bytes in a single 4 ms write cycle, significantly improving write throughput for bulk data operations. The EEPROM achieves 4 million write cycle endurance per byte and 200-year data retention at 85\u00b0C, ensuring long-term reliability for critical configuration data. The device includes a separate 512-bit identification page that can be permanently locked for secure board-level serialization and tracking. A hardware write-protect (WP) pin prevents accidental overwriting of the entire memory array. The wide 1.8 V to 5.5 V supply range supports direct connection to both low-voltage and 5 V systems.","working_principle":"The M24256-BWMN6TP uses a floating-gate EEPROM cell array organized as 32,768 x 8 bits. Each cell stores one bit of data as charge on a floating polysilicon gate embedded in the gate oxide of a selection transistor. During a write operation, a high-voltage charge pump generates the programming voltage that injects electrons onto the floating gate through Fowler-Nordheim tunneling, changing the cell threshold voltage. During erase, the voltage polarity is reversed to remove electrons from the floating gate. The I2C interface provides address-based random access to any byte in the memory array. For page writes, up to 64 consecutive bytes can be loaded into the page buffer and written to the array in a single 4 ms programming cycle. The write-protect (WP) pin, when tied to VCC, disables all write operations to the main memory array. The identification page is a separate 64-byte area that can be written and then permanently locked by setting a specific lock bit, after which no further writes are possible.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Function<\/th><\/tr><tr><td>1<\/td><td>E0<\/td><td>I2C chip address bit 0 (connect to VCC or VSS)<\/td><\/tr><tr><td>2<\/td><td>E1<\/td><td>I2C chip address bit 1 (connect to VCC or VSS)<\/td><\/tr><tr><td>3<\/td><td>VSS<\/td><td>Ground connection<\/td><\/tr><tr><td>4<\/td><td>VCC<\/td><td>Supply voltage (1.8 V to 5.5 V)<\/td><\/tr><tr><td>5<\/td><td>SDA<\/td><td>I2C serial data input\/output (open-drain)<\/td><\/tr><tr><td>6<\/td><td>SCL<\/td><td>I2C serial clock input<\/td><\/tr><tr><td>7<\/td><td>WC<\/td><td>Write control input; high = write protect entire array<\/td><\/tr><tr><td>8<\/td><td>E2<\/td><td>I2C chip address bit 2 (connect to VCC or VSS)<\/td><\/tr><\/table>","application_scenarios":"<ul><li><strong>Industrial Calibration Storage<\/strong>: Storing sensor offset and gain calibration constants that change infrequently but must survive power cycling<\/li><li><strong>Device Configuration<\/strong>: Power-on default settings and user preferences in consumer electronics and white goods<\/li><li><strong>Smart Metering<\/strong>: Tariff tables and billing parameters in electricity and gas meters with 200-year data retention<\/li><li><strong>Board Serialization<\/strong>: Permanent identification page locked with unique serial number for asset tracking and anti-counterfeiting<\/li><li><strong>Automotive ECU<\/strong>: Diagnostic trouble code storage and ECU calibration data in automotive control units<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Density<\/th><th>Interface<\/th><th>Endurance<\/th><th>Package<\/th><th>Notes<\/th><\/tr><tr><td>24AA256-I\/SN<\/td><td>Microchip<\/td><td>256 Kbit<\/td><td>I2C<\/td><td>1M<\/td><td>SOIC-8<\/td><td>Lower endurance<\/td><\/tr><tr><td>AT24C256C-SSHL-T<\/td><td>Microchip<\/td><td>256 Kbit<\/td><td>I2C<\/td><td>1M<\/td><td>SOIC-8<\/td><td>Popular alternative<\/td><\/tr><tr><td>BR24G256FVT-WE2<\/td><td>Rohm<\/td><td>256 Kbit<\/td><td>I2C<\/td><td>4M<\/td><td>TSSOP-8<\/td><td>Same endurance, TSSOP<\/td><\/tr><tr><td>M24256-DFMC6TG<\/td><td>STMicroelectronics<\/td><td>256 Kbit<\/td><td>I2C<\/td><td>4M<\/td><td>TSSOP-8<\/td><td>Same device, TSSOP package<\/td><\/tr><tr><td>CAT24C256WI-GT3<\/td><td>onsemi<\/td><td>256 Kbit<\/td><td>I2C<\/td><td>1M<\/td><td>SOIC-8<\/td><td>Cost-effective alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8370","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=8370"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8370\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8370"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}