MCP7940NT-I/MS
- Mfr.Part #
- MCP7940NT-I/MS
- Manufacturer
- Microchip Technology
- Package / Case
- 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
- Datasheet
- Download
- Description
- IC RTC CLK/CALENDAR I2C 8-MSOP
- Stock
- 66,430
- In Stock :
- 66,430
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- Manufacturer :
- Microchip Technology
- Product Category :
- Real Time Clocks
- Mounting Style :
- SMD/SMT
- ECCN Code :
- EAR99
- Height Seated (Max) :
- 1.1mm
- HTS Code :
- 8542.39.00.01
- Pin Count :
- 8
- Terminal Position :
- Dual
- Screening Level :
- Industrial
- Surface Mount :
- yes
- Information Access Method :
- I2C
- Product Type :
- Real Time Clocks
- Base Part Number :
- MCP7940N
- Seated Height-Max :
- 1.1 mm
- Operating Supply Voltage :
- 2.5, 3.3, 5 V
- Supplier Package :
- MSOP
- Maximum Operating Temperature :
- + 85 C
- Product Category :
- Real Time Clock
- RoHS :
- Details
- Mounting :
- Surface Mount
- Volatile :
- yes
- Radiation Hardening :
- No
- Terminal Form :
- Gull wing
- Features :
- Alarm, Leap Year, Square Wave Output, SRAM
- Length :
- 3mm
- Memory Size :
- 64B
- Max Operating Temperature :
- 85 °C
- Qualification Status :
- Not Qualified
- Time-Min :
- SECONDS
- Current - Timekeeping (Max) :
- 1.2μA @ 3.3V
- Packaging :
- Tape and Reel (TR)
- Minimum Operating Temperature :
- - 40 C
- Package :
- Tape and Reel (TR);Cut Tape (CT);Digi-Reel®;
- Operating Temperature :
- -40°C~85°C
- Terminal Pitch :
- 0.65mm
- Bus Type :
- Serial I2C
- Number of Terminations :
- 8
- Mount :
- Surface Mount
- Peak Reflow Temperature (Cel) :
- 260
- Interface :
- I2C, 2-Wire Serial
- Interrupt Capability :
- Y
- Number of Pins :
- 8
- Brand :
- Microchip Technology / Atmel
- Temperature Grade :
- Industrial
- Width :
- 3mm
- Voltage - Supply :
- 1.8V~5.5V
- Date Format :
- YY-MM-DD-dd
- Feature :
- Alarm, Leap Year, Square Wave Output, SRAM
- Supply Voltage :
- 2.5V
- JESD-609 Code :
- e3
- Power Supplies :
- 2/5V
- Time@Peak Reflow Temperature-Max (s) :
- 40
- Lifecycle Status :
- Production (Last Updated: 2 years ago)
- Base Product Number :
- MCP7940
- Series :
- Automotive, AEC-Q100
- Mounting Type :
- Surface Mount
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Package / Case :
- 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
- Reach Compliance Code :
- Compliant
- uPs/uCs/Peripheral ICs Type :
- TIMER, REAL TIME CLOCK
- Supplier Device Package :
- 8-MSOP
- Factory Lead Time :
- 7 Weeks
- Terminal Finish :
- Matte Tin (Sn) - annealed
- Battery Backup Switching :
- Backup Switching
- Number of Terminals :
- 8
- Published :
- 2012
- RoHS Status :
- ROHS3 Compliant
- Type :
- Clock/Calendar
- Min Supply Voltage :
- 1.8 V
- Max Supply Voltage :
- 5.5 V
- Manufacturer :
- Microchip
- Logic Function :
- Clock
- Package Shape :
- Square
- Product Status :
- Active
- Time Format :
- HH:MM:SS (12/24 hr)
- Clock Frequency :
- 0.032MHz
- Min Operating Temperature :
- -40 °C
- Schedule B :
- 8542390000, 8542390000/8542390000/8542390000/8542390000/8542390000
- JESD-30 Code :
- S-PDSO-G8
- Function :
- Clock/Calendar/Alarm/Battery Backup
- Voltage - Supply, Battery :
- 1.3V~5.5V
- Datasheets
- MCP7940NT-I/MS

Real Time Clocks Microchip Technology MCP7940NT-I/MS Overview
The MCP7940NT-I/MS from Microchip Technology is a highly integrated Real Time Clock/Calendar optimized for effective time tracking and data logging solutions. This IC provides full clock/calendar functionalities with seconds, minutes, hours, day, date, month, and year information. The incorporation of a digital trimming feature enhances accuracy and compensates for crystal frequency drifts, making it ideal for long-term precise applications. Designed in an 8-MSOP package, this device includes additional features such as battery switchover and a unique ID, positioning it as a critical component for advanced time-based applications in a variety of industrial settings.
MCP7940NT-I/MS Features
The MCP7940NT-I/MS IC stands out with its I2C interface, providing straightforward integration into existing systems with minimal I/O usage. It features an on-chip digital trimming/calibration circuit which can be used to adjust the clock frequency, ensuring high accuracy. Additionally, the device supports battery backup capability which maintains timekeeping in the absence of main power. An EEPROM is included for storing data or device configuration settings, enhancing the versatility and reliability of this component.
MCP7940NT-I/MS Applications
- Consumer Electronics: Employed in smart home devices, such as smart thermostats and security systems, where accurate timekeeping is crucial to perform scheduled tasks.
- Industrial Systems: Used in factory automation and control systems to manage operational schedules and maintain precise logs of activities based on time-stamped events.
- Telecommunication: Integral in network infrastructure, like servers and routers, to provide time stamps for data packets, aiding in network time synchronization and troubleshooting.
- Portable Medical Devices: Utilized in devices such as portable glucose monitors and blood pressure meters where the time stamping of readings is critical for patient monitoring and medical record keeping.
- Automotive: Applied in systems that require time logging and real-time system monitoring, enhancing navigation and vehicle control systems.
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