{"id":3550,"date":"2026-06-06T10:25:43","date_gmt":"2026-06-06T10:25:43","guid":{"rendered":"https:\/\/materialparts.com\/m41t62q6f\/"},"modified":"2026-06-06T10:25:43","modified_gmt":"2026-06-06T10:25:43","slug":"m41t62q6f","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/m41t62q6f\/","title":{"rendered":"M41T62Q6F"},"content":{"rendered":"

Productos<\/h2>\n

The M41T62Q6F from STMicroelectronics is a serial real-time clock (RTC) with I2C interface, featuring a built-in 32.768 kHz crystal oscillator. It provides time and calendar functions (seconds through century) with automatic leap year correction, two alarms, and a programmable square-wave output. Operating from 1.0V to 5.5V with 350 nA backup current, the QFN-16 (3x3mm) package minimizes board space.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Tipo<\/td>\nSerial RTC with Crystal<\/td>\n<\/tr>\n
Interface<\/td>\nI2C (400 kHz)<\/td>\n<\/tr>\n
Crystal<\/td>\nBuilt-in 32.768 kHz<\/td>\n<\/tr>\n
Time\/Calendar<\/td>\nSec to Century, auto leap year<\/td>\n<\/tr>\n
Alarms<\/td>\n2 (alarm 1 with AF flag)<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n1.0V – 5.5V<\/td>\n<\/tr>\n
Backup Current<\/td>\n350 nA (typical at 3.0V)<\/td>\n<\/tr>\n
Square Wave Output<\/td>\n1 Hz to 32.768 kHz (prog)<\/td>\n<\/tr>\n
Paquete<\/td>\nQFN-16 (3 x 3 x 0.85 mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to 85 C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Built-in 32.768 kHz crystal eliminates external component<\/li>\n
  • Ultra-low 350 nA backup current extends battery life<\/li>\n
  • Two programmable alarm functions with interrupt output<\/li>\n
  • I2C interface at 400 kHz for fast communication<\/li>\n
  • Automatic leap year correction through 2100<\/li>\n
  • Programmable square-wave output from 1 Hz to 32.768 kHz<\/li>\n
  • Under-voltage sense and switchover to backup supply<\/li>\n
  • Century bit for year 2000 rollover<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Battery-backed real-time clock for embedded systems<\/li>\n
    • Power metering and data logging timestamps<\/li>\n
    • Automotive infotainment clock<\/li>\n
    • Industrial PLC time stamping<\/li>\n
    • Medical device event logging<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The M41T62Q6F from STMicroelectronics is a serial real-time clock (RTC) with I2C interface, featuring a built-in 32.768 kHz crystal oscillator. It provides time and calendar functions (seconds through century) with automatic leap year correction, two alarms, and a programmable square-wave output. Operating from 1.0V to 5.5V with 350 nA backup current, the QFN-16 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[142],"class_list":["post-3550","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-st"],"acf":{"brief_explanation":"Serial RTC, I2C, built-in crystal, 2 alarms, 350nA backup, QFN-16 3x3mm","date_code":"","package_case":"QFN-16 (3.0 x 3.0 x 0.85 mm)","in_stock":5658,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/m41t62.pdf","price":"$1.45 @ 1ku","product_introduction":"The M41T62Q6F from STMicroelectronics is a serial real-time clock with an integrated 32.768 kHz crystal in a compact QFN-16 (3x3mm) package. It provides complete time and calendar functions from seconds to century with automatic leap year correction and century rollover. Two programmable alarms with interrupt output enable wake-up functions. Operating from 1.0V to 5.5V with only 350 nA typical backup current, it is optimized for battery-backed applications. The I2C interface supports 400 kHz fast mode, and a programmable square-wave output provides frequencies from 1 Hz to 32.768 kHz.","working_principle":"The M41T62Q6F integrates a 32.768 kHz tuning-fork crystal with the RTC die in a single package, eliminating external crystal selection and PCB layout concerns. The oscillator circuit uses a CMOS inverter with feedback and trimming capacitors for frequency adjustment. The time counters increment the seconds register, and carry logic propagates through minutes, hours, day, date, month, and year with automatic month-length and leap-year handling. The I2C slave interface responds to addresses 0xD0\/0xD1 for read\/write. Two alarm registers compare against time registers; when a match occurs, the AF flag is set and the INT pin is asserted. The backup switchover circuit automatically selects VCC or VBAT, whichever is higher.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>OSCIN<\/td>I\/O<\/td>Crystal oscillator input (internal)<\/td><\/tr>
      2<\/td>OSCOUT<\/td>I\/O<\/td>Crystal oscillator output (internal)<\/td><\/tr>
      3<\/td>VCC<\/td>Power<\/td>Primary supply (1.0-5.5V)<\/td><\/tr>
      4<\/td>VBAT<\/td>Power<\/td>Backup battery supply<\/td><\/tr>
      5<\/td>SDA<\/td>I\/O<\/td>I2C serial data<\/td><\/tr>
      6<\/td>SCL<\/td>Input<\/td>I2C serial clock<\/td><\/tr>
      7<\/td>INT<\/td>Output<\/td>Alarm interrupt output (active low)<\/td><\/tr>
      8<\/td>SQW<\/td>Output<\/td>Programmable square-wave output<\/td><\/tr>
      9-16<\/td>Misc<\/td>-<\/td>GND, NC, test pins<\/td><\/tr><\/table>","application_scenarios":"
      • Embedded RTC: Battery-backed timekeeping for MCU-based systems<\/li>
      • Data logging: Precise timestamps for industrial and medical records<\/li>
      • Automotive: Infotainment system clock with ultra-low backup current<\/li>
      • Power metering: Time-of-use tariff scheduling with alarm wake-up<\/li>
      • Portable devices: Long battery life RTC with integrated crystal<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ST<\/td>M41T62MQ6F<\/td>QFN-16<\/td>Automotive qualified version<\/td><\/tr>
        NXP<\/td>PCF8523T\/1<\/td>SOIC-8<\/td>I2C RTC, 240nA, ext crystal<\/td><\/tr>
        Microchip<\/td>MCP7940N-I\/SN<\/td>SOIC-8<\/td>I2C RTC, 1.5uA, ext crystal<\/td><\/tr>
        Maxim<\/td>DS3231SN#<\/td>SOIC-16<\/td>I2C RTC, TCXO, +\/-2ppm<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3550","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=3550"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3550\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3550"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3550"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3550"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}