Microchip MCP7940M-I/SN MCP7940M-I/SN RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C 1.8 V to 5.5 SOIC-8

The MCP7940M-I/SN is an I²C� Real-time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940M supports I²C communications up to 400kHz. The open-drain, multi-functional output can be configured to assert on an alarm match, to output a selectable frequency square wave or as a general purpose output. The MCP7940M is designed to operate using a 32.768kHz tuning fork crystal with external crystal load capacitors. On-chip digital trimming can be used to adjust for frequency variance caused by crystal tolerance and temperature.

• On-chip digital trimming/calibration - ±1PPM resolution, ±129PPM range
• Dual programmable alarms
• Versatile output pin - Clock output with selectable frequency
• 1.2µA at 3.3V Operating from VCC, low typical timekeeping current
• 64-byte SRAM User memory
• 2-wire serial interface, I²Câ�¢ compatible

Applications

Industrial, Clock & Timing, Industrial, 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	MCP7940M-I/SN
Quantity	Each
Technical Data Sheet EN
Product Change Notice EN
CAD CadSoft_EAGLE EN

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