Microchip MCP7940M-I/SN, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin SOIC
Technical Document
Specifications
Brand
MicrochipFunctions
Calendar, NV SRAM
Date Format
DW:DM:M:Y
Time Format
HH:MM:SS
User RAM
64B
Bus Type
Serial-I2C
Mounting Type
Surface Mount
Package Type
SOIC
Pin Count
8
Dimensions
4.9 x 3.9 x 1.25mm
Length
4.9mm
Width
3.9mm
Height
1.25mm
Maximum Operating Supply Voltage
5.5 V
Minimum Operating Supply Voltage
1.8 V
Minimum Operating Temperature
-40 °C
Maximum Operating Temperature
+85 °C
Country of Origin
Thailand
Product details
MCP7940M I²C Real-Time Clock/Calendars
The Microchip MCP7940M is Real-Time Clock Calendar (RTCC) that supports I²C communications. The MCP7940M includes a digital trimming circuit for accuracy which can compensate for crystal tolerance and temperature.
The MCP7940M features a multi-functional output that can be configured as an alarm output, to output a selectable frequency square wave or as a general purpose output.
Features
2-Wire Serial Interface, I²C™ Compatible: I²C clock rate up to 400 kHz
On-Chip Digital Trimming/Calibration: ±1 ppm resolution, ±129 ppm range
Tracks Hours, Minutes, Seconds, Day of Week, Day, Month and Year
Leap Year Compensated to 2399
12/24 Hour Modes
Oscillator for 32.768 kHz Crystals: Optimised for 6-9 pF crystals
Dual Programmable Alarms
Versatile Output Pin
Wide Operating Voltage Range: 1.8V to 5.5V
Low Typical Timekeeping Current: 1.2μA at 3.3V
Real Time Clock Peripherals - Microchip
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₹ 371.55
₹ 74.31 Each (In a Pack of 5) (Exc. GST)
₹ 438.43
₹ 87.686 Each (In a Pack of 5) (inc. GST)
Standard
5
RS Components & Controls (I) Ltd
Distribution hub - B-89, Sector 67, Noida, Gautam Budh Nagar, (Uttar Pradesh), 201 301
₹ 371.55
₹ 74.31 Each (In a Pack of 5) (Exc. GST)
₹ 438.43
₹ 87.686 Each (In a Pack of 5) (inc. GST)
Standard
5
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Technical Document
Specifications
Brand
MicrochipFunctions
Calendar, NV SRAM
Date Format
DW:DM:M:Y
Time Format
HH:MM:SS
User RAM
64B
Bus Type
Serial-I2C
Mounting Type
Surface Mount
Package Type
SOIC
Pin Count
8
Dimensions
4.9 x 3.9 x 1.25mm
Length
4.9mm
Width
3.9mm
Height
1.25mm
Maximum Operating Supply Voltage
5.5 V
Minimum Operating Supply Voltage
1.8 V
Minimum Operating Temperature
-40 °C
Maximum Operating Temperature
+85 °C
Country of Origin
Thailand
Product details
MCP7940M I²C Real-Time Clock/Calendars
The Microchip MCP7940M is Real-Time Clock Calendar (RTCC) that supports I²C communications. The MCP7940M includes a digital trimming circuit for accuracy which can compensate for crystal tolerance and temperature.
The MCP7940M features a multi-functional output that can be configured as an alarm output, to output a selectable frequency square wave or as a general purpose output.
Features
2-Wire Serial Interface, I²C™ Compatible: I²C clock rate up to 400 kHz
On-Chip Digital Trimming/Calibration: ±1 ppm resolution, ±129 ppm range
Tracks Hours, Minutes, Seconds, Day of Week, Day, Month and Year
Leap Year Compensated to 2399
12/24 Hour Modes
Oscillator for 32.768 kHz Crystals: Optimised for 6-9 pF crystals
Dual Programmable Alarms
Versatile Output Pin
Wide Operating Voltage Range: 1.8V to 5.5V
Low Typical Timekeeping Current: 1.2μA at 3.3V
Real Time Clock Peripherals - Microchip
Ideate. Create. Collaborate
JOIN FOR FREE
No hidden fees!
- Download and use our DesignSpark software for your PCB and 3D Mechanical designs
- View and contribute website content and forums
- Download 3D Models, Schematics and Footprints from more than a million products