Microchip MCP7940M-I/SN, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin SOIC

RS Stock No.:: 912-6943
Mfr. Part No.:: MCP7940M-I/SN
Brand:: Microchip

Microchip MCP7940M-I/SN, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin SOIC

Available for back order.

Price (ex. GST) Each (In a Tube of 100)

$1.029

(exc. GST)

$1.132

(inc. GST)

Units	Per unit	Per Tube*
100 - 400	$1.029	$102.90
500 +	$0.995	$99.50

*price indicative

RS Stock No.:: 912-6943
Mfr. Part No.:: MCP7940M-I/SN
Brand:: Microchip

Technical data sheets

Legislation and Compliance

COO (Country of Origin):: TH

Product Details

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

For products that are Customized and under Non-cancellable & Non-returnable, Sales & Conditions apply.

Real Time Clock Peripherals - Microchip

Specifications

Attribute	Value
Functions	Calendar, NV SRAM
Date Format	DW:DM:M:Y
Time Format	HH:MM:SS
User RAM	64B
Bus Type	Serial-I2C
Mounting Type	Surface Mount
Package Type	SOIC
Pin Count	8
Dimensions	4.9 x 3.9 x 1.25mm
Length	4.9mm
Width	3.9mm
Height	1.25mm
Maximum Operating Supply Voltage	5.5 V
Minimum Operating Supply Voltage	1.8 V
Minimum Operating Temperature	-40 °C
Maximum Operating Temperature	+85 °C