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Product Index > Integrated Circuits (ICs) > Clock/Timing - Real Time Clocks > Microchip Technology MCP7940N-I/SN

All prices are in US dollars.
Digi-Key Part NumberMCP7940N-I/SN-ND
Price BreakUnit PriceExtended Price
Quantity Available Digi-Key Stock: 13,608
Can ship immediately

Manufacturer Part Number


Lead Free Status / RoHS StatusLead free / RoHS Compliant

QuantityItem Number  ? Customer Reference
MCP7940N-I/SN Microchip Technology | MCP7940N-I/SN-ND DigiKey Electronics

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When requested quantity exceeds displayed pricing table quantities, a lesser unit price may appear on your order.
You may submit a request for quotation on quantities which are greater than those displayed in the pricing table.

Datasheets MCP7940N
I²C™ & SPI Family Brochure
MCP7940N Errata
Product Photos 8-SOIC
Design Resources MCP794xx Reference Layout Gerber Files
PCN Design/Specification MCP7940N Datasheet Update 21/Mar/2014
MCP7940N Errata Update 18/Apr/2014
Datasheet Update 09/Mar/2015
Copper/Gold Wire Update 08/Apr/2015
PCN Assembly/Origin Assembly Site Addition 08/Apr/2015
Assembly Site Addition 08/Apr/2015
Standard Package ? 100

Integrated Circuits (ICs)


Clock/Timing - Real Time Clocks

Packaging ? Tube ? 
FeaturesAlarm, Leap Year, Square Wave Output, SRAM
Memory Size64B
Time FormatHH:MM:SS (12/24 hr)
Date FormatYY-MM-DD-dd
InterfaceI²C, 2-Wire Serial
Voltage - Supply1.8 V ~ 5.5 V
Voltage - Supply, Battery1.3 V ~ 5.5 V
Current - Timekeeping (Max)1.2µA @ 3.3V
Operating Temperature-40°C ~ 85°C
Mounting TypeSurface Mount
Package / Case8-SOIC (0.154", 3.90mm Width)
Supplier Device Package8-SOIC N
Online CatalogSerial Address
Other NamesMCP7940NISN
Alternate Package | This part is also available in the following packaging:
Digi-Key Part NumberManufacturer Part NumberManufacturerPackagingQuantity AvailableUnit PriceMinimum Quantity
MCP7940NT-I/SN-NDMCP7940NT-I/SNMicrochip TechnologyTape & Reel (TR) ? 0

Tape & Reel, Cut Tape and Digi-Reels are all derived from the same manufacturer’s part number. Inventory from Tape & Reel is used to fulfill Cut Tape and Digi-Reel orders and will impact the total quantity available.

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0:54:52 7/28/2015