MCP7940M-I/MS
RTC IC, Date Time Format (Date/Month/Year hh:mm:ss), I2C, 1.8 V to 5.5 V, MSOP-8
| Manufacturer | MICROCHIP |
|---|---|
| Manufacturer Part No | MCP7940M-I/MSCopy |
| Manufacturer Standard Lead Time | 23 weeks |
| Order Code | 2098889 |
| Your Part Number | |
| Technical Datasheet |
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| Quantity | Price (Incl GST) |
|---|---|
| 1+ | $1.030 ($1.133) |
| 25+ | $0.958 ($1.0538) |
| 100+ | $0.900 ($0.990) |
Product Information
| Manufacturer | MICROCHIP |
|---|---|
| Manufacturer Part No | MCP7940M-I/MSCopy |
| Manufacturer Standard Lead Time | 23 weeks |
| Order Code | 2098889 |
| Technical Datasheet | |
| Interfaces | I2C |
| Clock Format | HH:MM:SS |
| Date Format | DD:MM:YYYY |
| Time Format | HH:MM:SS |
| Clock IC Type | RTC |
| Supply Voltage Min | 1.8V |
| Supply Voltage Max | 5.5V |
| Clock IC Case Style | MSOP |
| IC Case / Package | MSOP |
| IC Interface Type | I2C |
| No. of Pins | 8Pins |
| Product Range | - |
| Qualification | AEC-Q100 |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 85°C |
| Automotive Qualification Standard | AEC-Q100 |
| MSL | MSL 1 - Unlimited |
| SVHC | No SVHC (04-Feb-2026) |
Product Overview
The MCP7940M-I/MS is an I²C™ Real-time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940M supports I²C communications up to 400kHz. The open-drain, multi-functional output can be configured to assert on an alarm match, to output a selectable frequency square wave or as a general purpose output. The MCP7940M is designed to operate using a 32.768kHz tuning fork crystal with external crystal load capacitors. On-chip digital trimming can be used to adjust for frequency variance caused by crystal tolerance and temperature.
- On-chip digital trimming/calibration - ±1PPM resolution, ±129PPM range
- Dual programmable alarms
- Versatile output pin - Clock output with selectable frequency
- 1.2μA at 3.3V Operating from VCC, low typical timekeeping current
- 64-byte SRAM User memory
- 2-wire serial interface, I²C™ compatible
Applications
Industrial, Clock & Timing, Industrial, Automotive
Warnings
ESD sensitive device, take proper precaution while handling the device. Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.
Technical Specifications
| Interfaces | I2C |
|---|---|
| Date Format | DD:MM:YYYY |
| Clock IC Type | RTC |
| Supply Voltage Max | 5.5V |
| IC Case / Package | MSOP |
| No. of Pins | 8Pins |
| Qualification | AEC-Q100 |
| Operating Temperature Max | 85°C |
| MSL | MSL 1 - Unlimited |
| Clock Format | HH:MM:SS |
|---|---|
| Time Format | HH:MM:SS |
| Supply Voltage Min | 1.8V |
| Clock IC Case Style | MSOP |
| IC Interface Type | I2C |
| Product Range | - |
| Operating Temperature Min | -40°C |
| Automotive Qualification Standard | AEC-Q100 |
| SVHC | No SVHC (04-Feb-2026) |
Technical Docs (3)
Legislation and Environmental
| Country of Origin: Country in which last significant manufacturing process was carried outCountry of Origin: | Thailand Country in which last significant manufacturing process was carried out |
|---|---|
| Tariff No: | 85423990 |
| US ECCN: | EAR99 |
| EU ECCN: | NLR |
| RoHS Compliant: | Yes RoHS |
| RoHS Phthalates Compliant: | Yes RoHS |
| SVHC: | No SVHC (04-Feb-2026) |
| Download Product Compliance Certificate | Product Compliance Certificate |
| Weight (kg): | .0001 |