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

RS Stock No.:: 761-7627
Mfr. Part No.:: MCP7940M-I/SN
Brand:: Microchip

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

Bulk discount available

Subtotal (1 pack of 5 units)*

£2.52

(exc. VAT)

£3.025

(inc. VAT)

FREE delivery for orders over £50.00

Temporarily out of stock

595 unit(s) shipping from 11 March 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit	Per Pack*
5 - 20	£0.504	£2.52
25 - 95	£0.49	£2.45
100 +	£0.476	£2.38

*price indicative

RS Stock No.:: 761-7627
Mfr. Part No.:: MCP7940M-I/SN
Brand:: Microchip

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Microchip
	Product Type	Real Time Clock
	Date Format	DW:DM:M:Y
	Time Format	HH:MM:SS
	Mount Type	Surface
	Interface Type	I2C
	Package Type	SOIC
	Pin Count	8
	Minimum Operating Temperature	-40°C
	RTC Memory Size	64bit
	Maximum Operating Temperature	85°C
	Length	4.9mm
	Standards/Approvals	No
	Series	MCP794
	Height	1.25mm
	Width	3.9 mm
	Maximum Supply Voltage	5.5V
	Automotive Standard	No
	Minimum Supply Voltage	1.8V

	Select all
	Brand Microchip
	Product Type Real Time Clock
	Date Format DW:DM:M:Y
	Time Format HH:MM:SS
	Mount Type Surface
	Interface Type I2C
	Package Type SOIC
	Pin Count 8
	Minimum Operating Temperature -40°C
	RTC Memory Size 64bit
	Maximum Operating Temperature 85°C
	Length 4.9mm
	Standards/Approvals No
	Series MCP794
	Height 1.25mm
	Width 3.9 mm
	Maximum Supply Voltage 5.5V
	Automotive Standard No
	Minimum Supply Voltage 1.8V

Datasheet

COO (Country of Origin):: TH

MCP7940M I²C Real-Time Clock/Calendars

The Microchip MCP7940M is Real-Time Clock Calendar (RTCC) that supports I²C communications. The MCP7940M includes a digital trimming circuit for accuracy which can compensate for crystal tolerance and temperature.

The MCP7940M features a multi-functional output that can be configured as an alarm output, to output a selectable frequency square wave or as a general purpose output.

Features

2-Wire Serial Interface, I²C™ Compatible: I²C clock rate up to 400 kHz

On-Chip Digital Trimming/Calibration: ±1 ppm resolution, ±129 ppm range

Tracks Hours, Minutes, Seconds, Day of Week, Day, Month and Year

Leap Year Compensated to 2399

12/24 Hour Modes

Oscillator for 32.768 kHz Crystals: Optimised for 6-9 pF crystals

Dual Programmable Alarms

Versatile Output Pin

Wide Operating Voltage Range: 1.8V to 5.5V

Low Typical Timekeeping Current: 1.2μA at 3.3V

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

FREE delivery for orders over £50.00

MCP7940M I²C Real-Time Clock/Calendars

Features

Real Time Clock Peripherals - Microchip

Related links