The M41T00S is a low-power serial real-time clock (RTC) with a built-in 32.768 kHz oscillator (external crystal controlled). Eight bytes of the SRAM are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. Addresses and data are transferred serially via a two line, bidirectional I2C interface. The built-in address register is incremented automatically after each WRITE or READ data byte.
The M41T00S has a built-in power sense circuit which detects power failures and automatically switches to the battery supply when a power failure occurs. The energy needed to sustain the clock operations can be supplied by a small lithium button supply when a power failure occurs. The eight clock address locations contain the century, year, month, date, day, hour, minute, and second in 24-hour BCD format. Corrections for 28, 29 (leap year - valid until year 2100), 30 and 31 day months are made automatically.
The M41T00S is supplied in an 8-pin SOIC.
|DS4002: Serial real-time clock||5.1||307 KB|
|AN3060: Applications guide for serial real-time clocks (RTCs)||3.0||878 KB|
|AN1011: Battery technology used in NVRAM and real-time clock (RTC) products from ST||4.0||248 KB|
|AN934: How to use the digital calibration feature in TIMEKEEPER® and serial real-time clock (RTC) products||4.1||123 KB|
|AN4641: Integrating TIMEKEEPER® and real-time clock supervisor functions||1.0||479 KB|
|AN923: Managing century information using serial real-time clocks and TIMEKEEPER® NVRAMs||4.0||142 KB|
|AN1572: Power-down time-stamp function in serial real-time clocks (RTCs)||2.0||171 KB|
|AN1336: Power-fail comparator for NVRAM supervisory devices||2.0||127 KB|
|AN1012: Predicting the battery life and data retention period of NVRAMs and serial RTCs||4.1||439 KB|
|Support Tip: "RTC with Battery Switchover function loses time during reset "||1.0||58 KB|
|Serial real-time clock ICs||1.0||827 KB|
|Products Underwriter Laboratories (UL) Information||2.1||543 KB|
|Part Number||Package||Packing Type||Operating Temperature (°C) (min)||Operating Temperature (°C) (max)||Marketing Status||Unit Price (US$) *||Quantity||NVRAM size (B)||ECCN (US)||Country of Origin||More info||Order from ST||Order from Distributors|
|M41T00SM6F||SO-8||Tape And Reel||-40||85||Active : Product is in volume production||1.223||1000||-||EAR99||MOROCCO||MORE INFO||Free Sample Add to cart||DISTRIBUTOR AVAILABILITY|
|Part Number||Marketing Status||Package||Grade||RoHS Compliance Grade||Material Declaration**|
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.