M41T56M6E Datasheet

Real Time Clock


The M41T56M6E is a low power, Serial Real Time Clock with 56 bytes of NVRAM. A built-in32,768Hz oscillator (external crystal controlled) and the first 8 bytes of the RAM are used forthe clock/calendar function and are configured in binary coded decimal (BCD) format.Addresses and data are transferred serially via a two-line, bi-directional bus. The built-inaddress register is incremented automatically after each WRITE or READ data byte.The M41T56M6E clock has a built-in power sense circuit which detects power failures andautomatically switches to the battery supply during power failures. The energy needed tosustain the RAM and clock operations can be supplied from a small lithium coin cell. M41T56M6E Features • Counters for seconds, minutes, hours, day, date, month, years, and century• 32 KHz crystal oscillator integrating load capacitance (12.5pF) providing exceptional oscillator stability and high crystal series resistance operation• Serial interface supports I2C Bus (400kHz protocol)• 5V ±10% supply voltage• Timekeeping down to 2.5V• Automatic power-fail detect and switch circuitry• 56 bytes of general purpose RAM• Software clock calibration to compensate crystal deviation due to temperature• Automatic leap year compensation• Operating temperature of –40 to 85°C• Packaging options include:– 28-lead SOIC and SNAPHAT® TOP (to beordered separately)–SO8N


[{"Name":"Function","Value":"Clock, Calendar "},{"Name":"RTC Bus Interface","Value":"I2C"},{"Name":"Date Format","Value":"DW:DM:M:Y "},{"Name":"Time Format","Value":"HH:MM:SS "},{"Name":"RTC Memory Size","Value":"64 B "},{"Name":"Supply Voltage - Max","Value":"5.5 V "},{"Name":"Supply Voltage - Min","Value":"4.5 V "},{"Name":"Maximum Operating Temperature","Value":"+ 85 C "},{"Name":"Minimum Operating Temperature","Value":"- 40 C "},{"Name":"Mounting Style","Value":"SMD/SMT "},{"Name":"Package / Case","Value":"SOIC-8 "},{"Name":"Packaging","Value":"Tube "}]

Manufacturer information

Warm Hint

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