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

Manufacturer Part Number
MCP7940N-I/ST
Manufacturer
Microchip Technology
Allelco Part Number
32D-MCP7940N-I/ST
ECAD Model
Parts Description
IC RTC CLK/CALENDAR I2C 8TSSOP
Package
8-TSSOP (0.173', 4.40mm Width)
Data sheet
I²C™ & SPI Family Brochure.pdf
MCP7940N.pdf
RoHs Status
ROHS3 Compliant
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Specifications

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

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-TSSOP  
Series Automotive, AEC-Q100  
Package / Case 8-TSSOP (0.173', 4.40mm Width)  
Package Tube  
Product Attribute Attribute Value  
Operating Temperature -40°C ~ 85°C  
Mounting Type Surface Mount  
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/ST

Manufacturer

Microchip Technology

Introduction

Microchip Technology's MCP7940N-I/ST is a compact real-time clock/calendar component.

Product Features and Performance

Clock/Calendar Functionality

Alarm Feature

Leap Year Compliance

Square Wave Output for Clock Signaling

64 Bytes of SRAM for Data Storage

12/24 hour Time Format

YY-MM-DD-dd Date Format

I2C, 2-Wire Serial Interface for Easy Communication

Low Timekeeping Current

Product Advantages

Minimal Power Consumption for Timekeeping

Built-in Digital Trimming for High Accuracy

Battery-Backed Operation for Continuous Timekeeping

Automatic Leap Year Correction

Key Technical Parameters

Voltage - Supply: 1.8V to 5.5V

Voltage - Supply, Battery: 1.3V to 5.5V

Current - Timekeeping (Max): 1.2µA @ 3.3V

Operating Temperature Range: -40°C to 85°C

Quality and Safety Features

Automotive Grade Reliability

AEC-Q100 Qualified for High-Quality Standards

Compatibility

Standard I2C Communication Interface

Compatible with 2-Wire Serial Interfacing

Application Areas

Automotive Systems

Embedded Electronics

Industrial Timekeeping

Consumer Electronics

IoT Devices

Product Lifecycle

Active Product Status

Not Nearing Discontinuation

Replacements and Upgrades Available

Reasons to Choose This Product

Reliable Performance in Tough Conditions

AEC-Q100 Certification for Automotive and Industrial Use

Extremely Low Current Consumption for Battery-Preserved Applications

On-Chip Oscillator with Digital Trimming for Precision

64 Bytes SRAM for User Data Storage

Intuitive Alarm and Time Functions with Square Wave Output

Flexible Voltage Operation to Accommodate Various Systems

Strong Support for Microchip's Ecosystem and Development Tools

Parts with Similar Specifications

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

Product Attribute MCP7940N-I/ST MCP7940NT-I/ST MCP7940N-I/SN MCP7940NT-I/SN
Part Number MCP7940N-I/ST MCP7940NT-I/ST MCP7940N-I/SN MCP7940NT-I/SN
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Type Clock/Calendar Clock/Calendar Clock/Calendar Clock/Calendar
Package / Case 8-TSSOP (0.173', 4.40mm Width) 8-TSSOP (0.173", 4.40mm Width) 8-SOIC (0.154', 3.90mm Width) 8-SOIC (0.154", 3.90mm Width)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Interface I²C, 2-Wire Serial I²C, 2-Wire Serial I²C, 2-Wire Serial I²C, 2-Wire Serial
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
Series Automotive, AEC-Q100 Automotive, AEC-Q100 Automotive, AEC-Q100 Automotive, AEC-Q100
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)
Base Product Number MCP7940 MCP7940 MCP7940 MCP7940
Memory Size 64B 64B 64B 64B
Voltage - Supply, Battery 1.3V ~ 5.5V 1.5V ~ 5.5V 1.3V ~ 5.5V 1.3V ~ 5.5V
Current - Timekeeping (Max) 1.2µA @ 3.3V 1.2µA @ 3.3V 1.2µA @ 3.3V 1.2µA @ 3.3V
Package Tube Tape & Reel (TR) Tube Tape & Reel (TR)
Date Format YY-MM-DD-dd YY-MM-DD-dd YY-MM-DD-dd YY-MM-DD-dd
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-TSSOP 8-TSSOP 8-SOIC 8-SOIC

MCP7940N-I/ST Datasheet PDF

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

Datasheets
MCP7940N.pdf
PCN Packaging
Label and Packing Changes 23/Sep/2015.pdf Packing Changes 10/Oct/2016.pdf
HTML Datasheet
I²C™ & SPI Family Brochure.pdf
PCN Design/Specification
MCP7940N 08/Apr/2022.pdf MCP7940N 31/Oct/2019.pdf
PCN Assembly/Origin
2.73KHz.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/ST Image

MCP7940N-I/ST

Microchip Technology
32D-MCP7940N-I/ST

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