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