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HomeProductsIntegrated Circuits (ICs)Clock/Timing - Real Time ClocksMCP7940N-I/P
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MCP7940N-I/P - Microchip Technology

Manufacturer Part Number
MCP7940N-I/P
Manufacturer
Microchip Technology
Allelco Part Number
32D-MCP7940N-I/P
ECAD Model
Parts Description
IC RTC CLOCK/CALENDAR I2C 8DIP
Package
8-DIP (0.300", 7.62mm)
Data sheet
I²C™ & SPI Family Brochure.pdf
MCP7940N.pdf
RoHs Status
ROHS3 Compliant
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Specifications

MCP7940N-I/P Tech Specifications
Microchip Technology - MCP7940N-I/P technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - MCP7940N-I/P

Product Attribute Attribute Value  
Manufacturer Microchip Technology  
Voltage - Supply, Battery 1.3V ~ 5.5V  
Voltage - Supply 1.8V ~ 5.5V  
Type Clock/Calendar  
Time Format HH:MM:SS (12/24 hr)  
Supplier Device Package 8-PDIP  
Series Automotive, AEC-Q100  
Package / Case 8-DIP (0.300", 7.62mm)  
Package Tube  
Product Attribute Attribute Value  
Operating Temperature -40°C ~ 85°C  
Mounting Type Through Hole  
Memory Size 64B  
Interface I²C, 2-Wire Serial  
Features Alarm, Leap Year, Square Wave Output, SRAM  
Date Format YY-MM-DD-dd  
Current - Timekeeping (Max) 1.2µA @ 3.3V  
Base Product Number MCP7940  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

MCP7940N-I/P

Manufacturer

Microchip Technology

Introduction

Real-time clock/calendar optimized for low power consumption and precise timekeeping

Product Features and Performance

Alarm functionality

Leap year compensation

Square wave output

64 bytes of battery-backed SRAM

12/24 hour time format

YY-MM-DD-dd date format

I2C, 2-Wire Serial interface for communication

Wide voltage supply range from 1.8V to 5.5V

Battery voltage supply range from 1.3V to 5.5V

Maximum timekeeping current of 1.2µA at 3.3V

Product Advantages

Low power consumption for battery-powered applications

Integrated alarms for event-driven actions

Square wave output for external devices synchronization

SRAM for additional data storage

Simple integration with microcontroller systems via I2C

Operation across a broad range of voltages

Key Technical Parameters

Interface: I2C, 2-Wire Serial

Memory Size: 64B SRAM

Time Format: HH:MM:SS (12/24 hr)

Date Format: YY-MM-DD-dd

Voltage Supply: 1.8V to 5.5V

Voltage Supply, Battery: 1.3V to 5.5V

Current Timekeeping (Max): 1.2µA at 3.3V

Operating Temperature: -40°C to 85°C

Through Hole mounting

Quality and Safety Features

AEC-Q100 qualified for automotive applications

Compatibility

Compatible with I2C, 2-Wire Serial interfaced microcontrollers and systems

Application Areas

Automotive electronics

Industrial systems

Portable medical devices

Consumer electronics

Product Lifecycle

Product status: Active

Not nearing discontinuation

Replacements or upgrades available

Several Key Reasons to Choose This Product

Highly reliable with automotive-grade AEC-Q100 qualification

Flexible power supply options to accommodate varying design needs

Low power design ideal for battery-dependent operations

Additional memory storage with SRAM

Advanced timekeeping features including alarms and leap year handling

Easy firmware integration through industry-standard I2C protocol

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology MCP7940N-I/P

Product Attribute MCP7940N-I/P MCP7940NT-I/MS MCP7940MT-I/MNY MCP7940N-I/ST
Part Number MCP7940N-I/P MCP7940NT-I/MS MCP7940MT-I/MNY MCP7940N-I/ST
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Package / Case 8-DIP (0.300", 7.62mm) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-WFDFN Exposed Pad 8-TSSOP (0.173', 4.40mm Width)
Current - Timekeeping (Max) 1.2µA @ 3.3V 1.2µA @ 3.3V 1µA @ 5.5V 1.2µA @ 3.3V
Type Clock/Calendar Clock/Calendar Clock/Calendar Clock/Calendar
Base Product Number MCP7940 MCP7940 MCP7940 MCP7940
Series Automotive, AEC-Q100 Automotive, AEC-Q100 - Automotive, AEC-Q100
Date Format YY-MM-DD-dd YY-MM-DD-dd YY-MM-DD-dd YY-MM-DD-dd
Voltage - Supply, Battery 1.3V ~ 5.5V 1.3V ~ 5.5V - 1.3V ~ 5.5V
Package Tube Tape & Reel (TR) Tape & Reel (TR) Tube
Time Format HH:MM:SS (12/24 hr) HH:MM:SS (12/24 hr) HH:MM:SS (12/24 hr) HH:MM:SS (12/24 hr)
Memory Size 64B 64B 64B 64B
Features Alarm, Leap Year, Square Wave Output, SRAM Alarm, Leap Year, Square Wave Output, SRAM Alarm, Leap Year, Square Wave Output, SRAM Alarm, Leap Year, Square Wave Output, SRAM
Supplier Device Package 8-PDIP 8-MSOP 8-TDFN (2x3) 8-TSSOP
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Voltage - Supply 1.8V ~ 5.5V 1.8V ~ 5.5V 1.8V ~ 5.5V 1.8V ~ 5.5V
Mounting Type Through Hole Surface Mount Surface Mount Surface Mount
Interface I²C, 2-Wire Serial I²C, 2-Wire Serial I²C, 2-Wire Serial I²C, 2-Wire Serial

MCP7940N-I/P Datasheet PDF

Download MCP7940N-I/P pdf datasheets and Microchip Technology documentation for MCP7940N-I/P - Microchip Technology.

Datasheets
I²C™ & SPI Family Brochure.pdf MCP7940N.pdf
PCN Packaging
Label and Packing Changes 23/Sep/2015.pdf Packing Changes 10/Oct/2016.pdf
PCN Assembly/Origin
Mult Dev 13/Apr/2020.pdf
PCN Design/Specification
MCP7940N 08/Apr/2022.pdf MCP7940N 31/Oct/2019.pdf

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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MCP7940N-I/P Image

MCP7940N-I/P

Microchip Technology
32D-MCP7940N-I/P

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