MCP7940N-I/SN MICROCHIP Alarm RTC IC, Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr, I2C, 1.8 V to 5.5 V, SOIC-8


In stock

SKU: 1743752
  1. Data Format:  YYYY:MM:WK:DD:Hr:Min: Secs
  2. No.of pins: 8pins
  3. Clock Format: 12Hr / 24Hr
  4. Clock IC Type: Alarm RTC


(Including GST)

In stock

Purchase this product now and earn 2 Robu Points!

Low Stock. Order Now !

Free Delivery above ₹499
Free Delivery
above ₹499
1 Year Warranty
15 Days Warranty
Cash On delivery
Cash on Delivery*

Didn’t find what you are looking for?

Brand: Microchip
Category: Clock & Timing IC

The MCP7940N-I/SN is a low-power real-time clock (RTC) IC that uses digital timing compensation for an accurate clock/calendar, a programmable output control for versatility, and a power sense circuit that automatically switches to the backup supply. Using a low-cost 32.768kHz crystal, it tracks time using several internal registers. For communication, the MCP7940N-I/SN uses the I²C™ bus. The clock/calendar automatically adjusts for months with fewer than 31 days, including corrections for leap years. The clock operates in the 24 or 12-hour format with an AM/PM indicator and settable alarm(s) to the second, minute, hour, day of the week, date, or month. Using the programmable CLKOUT, frequencies of 32.768, 8.192, and 4.096kHz and 1Hz can be generated from the external crystal. The device is fully accessible through the serial interface while VCC is between 1.8 and 5.5V, but can operate down to 1.3V for timekeeping and SRAM retention only.


  1. Clock & Timing
  2. Automotive


  1. 12/24 Hour mode battery-backed Real-time Clock/Calendar (RTCC)
  2. 1PPM Resolution, ±129PPM Range On-chip Digital Trimming/Calibration
  3. Dual Programmable Alarms
  4. Clock output with selectable frequency, Alarm output, General Purpose output Versatile Output Pin
  5. Time logged on switchover to and from Battery Backup Power-Fail Time-Stamp
  6. 64-byte Battery-backed SRAM
  7. Low-power Consumption
  8. 1.3 to 5.5V Backup Voltage
  9. Low Typical Timekeeping Current: – Operating from VCC: 1.2 µA at 3.3V – Operating from battery backup: 925 nA at 3.0V
  10. Automatic Switchover to Battery Backup
  11. Supplier’s original packaging: Tube

Package Includes:

1 x MCP7940N-I/SN MICROCHIP Alarm RTC IC, Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr, I2C, 1.8 V to 5.5 V, SOIC-8

SKU: 1743752 Category:
No. of Pins


Operating Temperature (°C)


Operating Temperature Max


Interface Type


Supply Voltage Min


Supply Voltage Max


Clock IC Type

Alarm RTC

Date Format


Clock Format

12Hr / 24Hr

Shipping Weight 0.001 kg
Shipping Dimensions 6 × 5 × 1 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 0 reviews

0.0 overall

Be the first to review “MCP7940N-I/SN MICROCHIP Alarm RTC IC, Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr, I2C, 1.8 V to 5.5 V, SOIC-8”

There are no reviews yet.


Questions and answers of the customers

There are no questions yet. Be the first to ask a question about this product.

Only registered users are eligible to enter questions
Country Of Origin: China