Microchip Real Time Clock 64-bit DW:DM:M:Y Format 8-Pin PDIP Through Hole MCP7940M-I/P

Microchip MCP7940M-I/P is a precision Real Time Clock and calendar IC featuring a 64-bit RTC memory and DW:DM:M:Y date format alongside HH:MM:SS time format, delivered in a robust 8-pin PDIP through-hole package. This RTC IC supports standard I2C communication with clock rates up to 400 kHz, allowing seamless interfacing with microcontrollers and embedded systems.

Equipped with an on-chip digital trimming mechanism, the MCP7940M ensures enhanced accuracy by compensating for temperature and crystal tolerance variations within a ±129 ppm range at 1 ppm resolution. It tracks comprehensive calendar data including seconds, minutes, hours, day of the week, date, month, and year with leap year compensation valid until the year 2399.

The device operates over a wide supply voltage range from 1.8V to 5.5V, making it highly versatile for low power and battery-operated equipment. Low idle current of 1.2μA at 3.3V further extends operational life in embedded applications. Its multifunction output pin can be programmed to act as an alarm signal, output a selectable frequency square wave, or function as a general purpose output, enhancing functionality in custom timing solutions.

Its compact dimensions of 10.16 mm length, 7.11 mm width, and 4.95 mm height make the MCP7940M suitable for PCB layouts requiring through-hole mounting. The device is optimized for 32.768 kHz crystal oscillators with load capacitances between 6 pF and 9 pF, ensuring reliable and stable clock generation across the operating temperature range from -40°C to +85°C.

This Real Time Clock IC finds applications in various industrial, commercial, and consumer electronic products requiring accurate timekeeping, calendar functionality, and programmable alarms. It is ideal for use in microcontroller-based embedded systems, HVAC control, instrumentation, and time-sensitive data logging.

Supports I2C communication up to 400 kHz clock rate. On-chip digital trimming with ±1 ppm resolution. 64-bit RTC memory with comprehensive time and calendar tracking. Wide operating voltage range from 1.8V to 5.5V. Low timekeeping current of 1.2μA at 3.3V.

Multipurpose output pin for alarms or square wave output. Optimized for 32.768 kHz crystals with 6-9 pF load capacitance. Operating temperature range: -40°C to 85°C. Browse the full range of Real Time Clocks and Semiconductor components on EnvMart for industrial and electronic design needs.