{"id":6488,"date":"2026-06-17T03:22:35","date_gmt":"2026-06-17T03:22:35","guid":{"rendered":"https:\/\/materialparts.com\/at24c04c-mahm-t\/"},"modified":"2026-06-17T03:22:35","modified_gmt":"2026-06-17T03:22:35","slug":"at24c04c-mahm-t","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/at24c04c-mahm-t\/","title":{"rendered":"AT24C04C-MAHM-T"},"content":{"rendered":"<h2>\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n<p>The AT24C04C-MAHM-T is a 4Kb I2C-compatible serial EEPROM from Microchip Technology organized as 512 x 8 bits. It operates from 1.7V to 5.5V with clock frequencies up to 1 MHz and features 1,000,000 write cycle endurance and 100-year data retention in a compact 8-UDFN (2 x 3 mm) surface-mount package.<\/p>\n<h2>\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n<ul>\n<li>Density: 4 Kbit (512 x 8)<\/li>\n<li>Interface: I2C (2-wire)<\/li>\n<li>Clock Frequency: 400 kHz (1.7V), 1 MHz (2.5V and above)<\/li>\n<li>Page Size: 16 bytes<\/li>\n<li>Write Cycle Time: 5 ms max (self-timed)<\/li>\n<li>Access Time: 550 ns<\/li>\n<li>Supply Voltage: 1.7V ~ 5.5V<\/li>\n<li>Read Current: 0.4 mA typical<\/li>\n<li>Write Current: 2 mA typical<\/li>\n<li>Standby Current: 6 \u00b5A max<\/li>\n<li>Endurance: 1,000,000 write cycles<\/li>\n<li>Data Retention: >100 years<\/li>\n<li>Operating Temperature: -40\u00b0C ~ 85\u00b0C<\/li>\n<li>Package: 8-UDFN (2 x 3 mm)<\/li>\n<li>Write Protect Pin: Hardware data protection<\/li>\n<\/ul>\n<h2>\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n<ul>\n<li>Dual clock rate: 400 kHz at 1.7V, 1 MHz at 2.5V+<\/li>\n<li>Supports up to 4 devices on the same I2C bus<\/li>\n<li>16-byte page write mode with partial page writes allowed<\/li>\n<li>Schmitt trigger filtered inputs for noise suppression<\/li>\n<li>Bidirectional data transfer protocol<\/li>\n<li>Hardware write-protect pin for data security<\/li>\n<li>Self-timed write cycle (no external components needed)<\/li>\n<li>Green package options (Pb-free, halide-free, RoHS compliant)<\/li>\n<\/ul>\n<h2>\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n<ul>\n<li>Industrial and consumer electronics<\/li>\n<li>Automotive systems (AEC-Q100 qualified variants available)<\/li>\n<li>Configuration and calibration data storage<\/li>\n<li>Smart metering and IoT devices<\/li>\n<li>Embedded system parameter storage<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The AT24C04C-MAHM-T is a 4Kb I2C-compatible serial EEPROM from Microchip Technology organized as 512 x 8 bits. It operates from 1.7V to 5.5V with clock frequencies up to 1 MHz and features 1,000,000 write cycle endurance and 100-year data retention in a compact 8-UDFN (2 x 3 mm) surface-mount package. Key Specifications 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":[13],"tags":[],"chip_brand":[134],"class_list":["post-6488","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"4Kb I2C serial EEPROM, 512x8, 1MHz, 1.7-5.5V, 1M cycles endurance, 8-UDFN 2x3mm","date_code":"","package_case":"8-UDFN (2 x 3 mm)","in_stock":6800,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/at24c04c","price":"$0.31","product_introduction":"The AT24C04C-MAHM-T is a 4 Kb Serial EEPROM from Microchip Technology utilizing the industry-standard I2C (2-wire) serial interface. Organized as 512 words of 8 bits each, the device provides reliable non-volatile storage for configuration data, calibration parameters, and user settings. The AT24C04C supports both standard-mode (400 kHz at 1.7V) and fast-mode-plus (1 MHz at 2.5V and above) I2C operation. The MAHM-T variant is packaged in a compact 8-UDFN (2 x 3 mm) surface-mount package with exposed pad, ideal for space-constrained designs. Hardware write protection via the WP pin prevents accidental data corruption.","working_principle":"The AT24C04C-MAHM-T communicates via the I2C protocol using just two signal lines: SCL (serial clock) and SDA (serial data). The device address is configured through the A0 and A1 address pins, allowing up to 4 AT24C04C devices to share the same I2C bus. Read operations are initiated by sending the device address followed by the word address, after which the device outputs data on SDA. Write operations support both byte-write and 16-byte page-write modes. During a page write, up to 16 bytes can be loaded into the internal page buffer before the self-timed write cycle begins, minimizing bus occupancy. The Schmitt trigger inputs provide noise immunity on the SCL and SDA lines, ensuring reliable communication in electrically noisy environments.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Function<\/th><\/tr><tr><td>1<\/td><td>A0<\/td><td>Address input bit 0<\/td><\/tr><tr><td>2<\/td><td>A1<\/td><td>Address input bit 1<\/td><\/tr><tr><td>3<\/td><td>VSS<\/td><td>Ground<\/td><\/tr><tr><td>4<\/td><td>SDA<\/td><td>Serial Data (I2C data, bidirectional)<\/td><\/tr><tr><td>5<\/td><td>SCL<\/td><td>Serial Clock (I2C clock)<\/td><\/tr><tr><td>6<\/td><td>WP<\/td><td>Write Protect (active high blocks write access)<\/td><\/tr><tr><td>7<\/td><td>NC<\/td><td>No Connect<\/td><\/tr><tr><td>8<\/td><td>VCC<\/td><td>Power Supply (1.7V to 5.5V)<\/td><\/tr><\/table>","application_scenarios":"The AT24C04C-MAHM-T is widely used in consumer electronics for storing user preferences, calibration data, and serial numbers. In industrial systems, it retains configuration parameters across power cycles with its 100-year data retention specification. The compact UDFN package is ideal for wearable devices and IoT sensors where board space is extremely limited. For automotive applications, the AEC-Q100 qualified variants provide reliable operation in harsh environments. The 1 MHz I2C support enables fast read\/write access in systems requiring quick startup from stored parameters.","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Key Difference<\/th><\/tr><tr><td>AT24C08C-MAHM-T<\/td><td>Microchip<\/td><td>8Kb (1024x8) higher density<\/td><\/tr><tr><td>AT24C04C-SSHM-T<\/td><td>Microchip<\/td><td>SOIC-8 package variant<\/td><\/tr><tr><td>24LC04B-I\/SN<\/td><td>Microchip<\/td><td>4Kb, SOIC-8, 400kHz only<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6488","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=6488"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6488\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6488"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6488"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6488"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}