Microchip Real Time Clock 64 bit DW:DM:M:Y, 8-Pin SOIC Surface MCP7940M-I/SN

Microchip MCP7940M-I/SN is a precision Real Time Clock (RTC) and calendar integrated circuit designed for embedded applications requiring highly accurate timekeeping and calendar functions. This 64-bit RTC supports date format DW:DM:M:Y and time format HH:MM:SS, interfaced via the industry-standard I2C bus with clock rates up to 400 kHz.

The device features on-chip digital trimming and calibration technology with ±1 ppm resolution and ±129 ppm range, allowing compensation for crystal tolerance and temperature variances to maintain clock accuracy. It tracks time and date parameters including seconds, minutes, hours, day of week, day, month, and year with leap year compensation valid through the year 2399, ensuring long-term reliability.

The MCP7940M operates over an extended voltage supply range from 1.8 V to 5.5 V and exhibits low power consumption with a typical timekeeping current of just 1.2 μA at 3.3 V, ideal for battery-operated systems. It includes dual programmable alarms and a multifunction output pin configurable as alarm output, selectable frequency square wave, or general-purpose output for versatile system integration.

The on-chip oscillator is optimized for 32.768 kHz crystals with load capacitance of 6-9 pF, aiding stable operation in a compact surface mount 8-pin SOIC package measuring 4.9 mm in length, 3.9 mm in width, and 1.25 mm in height. The device is rated for operation from -40°C to +85°C, suitable for industrial and commercial electronic equipment.

Manufactured in Thailand, the MCP7940M-I/SN maintains new condition and quality assurance. It finds applications in industrial equipment, consumer electronics, embedded systems, and any environment requiring precise time and calendar control with low power demands.

Supports I²C communication with up to 400 kHz clock rate. On-chip digital trimming for ±1 ppm accuracy adjustment. Tracks comprehensive date and time components including leap year compensation. Wide voltage operation from 1.8 V to 5.5 V.

Very low current consumption enhances battery life. Dual alarms and multifunction output enhance control capabilities. Compact 8-pin SOIC surface mount package. Robust temperature range from -40°C to 85°C. Explore more products in Real Time Clocks category at EnvMart for reliable timing solutions.