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

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Subtotal (1 tube of 100 units)*

£44.60

(exc. VAT)

£53.50

(inc. VAT)

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

Microchip

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 Temperature

-40 °C

Maximum Operating Temperature

+85 °C

Minimum Operating Supply Voltage

1.8 V

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


Real Time Clock Peripherals - Microchip

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