Microchip MCP79412-I/SN MCP79412-I/SN Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec hh:mm:ss I2C 1.8 V to 5.5 SOIC-8

The MCP79412-I/SN is a general purpose I²C�Compatible Real-Time Clock/Calendar (RTCC) is highly integrated with non-volatile memory. This features a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming for accuracy. Using a 32.768kHz crystal or other clock source, time is tracked in either a 12 or 24-hour format with an AM/PM indicator and timing to the second, minute, hour, day of the week, day, month and year. As an interrupt or wakeup signal, a multi-function open drain output can be programmed as an alarm out or as a clock out that supports 4 selectable frequencies. In addition, non-volatile memory is included along with an unique ID in a locked section of EEPROM that is factory programmed with an EUI-48 MAC address.

• Leap year compensated to 2399
• On-chip digital trimming/calibration - 1PPM resolution, ±129PPM range
• Dual programmable alarms
• Versatile output pin - Clock output with selectable frequency
• Power-fail time-stamp - time logged on switchover to and from battery backup
• 2-wire serial interface
• 64-byte battery-backed SRAM
• 1kb EEPROM Memory
• 64-bit protected EEPROM area - robust write unlock sequence
• Low typical timekeeping current
• Automatic switchover to battery backup
• Programmable charge current
• Programmable safety charge timers
• Preconditioning of deeply depleted cells
• Automatic end-of-charge control
• Charge status output for direct LED drive
• Automatic power-down when input power removed

Applications

Clock & Timing, Power Management, Consumer Electronics, Automotive

Warnings ESD sensitive device, take proper precaution while handling the device. Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Other details

Brand	MICROCHIP
Part Number	MCP79412-I/SN
Quantity	Each
Technical Data Sheet EN
One Page Summary EN
CAD CadSoft_EAGLE EN
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