Microchip MCP7940M-I/P, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin PDIP
- RS Stock No.:
- 774-7403
- Mfr. Part No.:
- MCP7940M-I/P
- Brand:
- Microchip
Subtotal (1 bag of 10 units)*
£6.05
(exc. VAT)
£7.26
(inc. VAT)
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In Stock
- 20 unit(s) ready to ship
- Plus 30 unit(s) ready to ship from another location
- Plus 320 unit(s) shipping from 29 October 2025
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Units | Per unit | Per Bag* |
|---|---|---|
| 10 + | £0.605 | £6.05 |
*price indicative
- RS Stock No.:
- 774-7403
- Mfr. Part No.:
- MCP7940M-I/P
- Brand:
- Microchip
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Microchip | |
| Functions | Alarm, Calendar | |
| Date Format | DW:DM:M:Y | |
| Time Format | HH:MM:SS | |
| User RAM | 64B | |
| Bus Type | Serial-I2C | |
| Mounting Type | Through Hole | |
| Package Type | PDIP | |
| Pin Count | 8 | |
| Dimensions | 10.16 x 7.11 x 4.95mm | |
| Length | 10.16mm | |
| Width | 7.11mm | |
| Height | 4.95mm | |
| Maximum Operating Supply Voltage | 5.5 V | |
| Maximum Operating Temperature | +85 °C | |
| Minimum Operating Supply Voltage | 1.8 V | |
| Minimum Operating Temperature | -40 °C | |
Select all | ||
|---|---|---|
Brand Microchip | ||
Functions Alarm, Calendar | ||
Date Format DW:DM:M:Y | ||
Time Format HH:MM:SS | ||
User RAM 64B | ||
Bus Type Serial-I2C | ||
Mounting Type Through Hole | ||
Package Type PDIP | ||
Pin Count 8 | ||
Dimensions 10.16 x 7.11 x 4.95mm | ||
Length 10.16mm | ||
Width 7.11mm | ||
Height 4.95mm | ||
Maximum Operating Supply Voltage 5.5 V | ||
Maximum Operating Temperature +85 °C | ||
Minimum Operating Supply Voltage 1.8 V | ||
Minimum Operating Temperature -40 °C | ||
- COO (Country of Origin):
- TH
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.
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
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
Related links
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