 
    | Parameters | |
|---|---|
| Factory Lead Time | 6 Weeks | 
| Contact Plating | Tin | 
| Mount | Surface Mount | 
| Mounting Type | Surface Mount | 
| Package / Case | 8-SOIC (0.154, 3.90mm Width) | 
| Number of Pins | 8 | 
| Operating Temperature | -40°C~85°C | 
| Packaging | Tube | 
| Published | 1998 | 
| Series | Automotive, AEC-Q100 | 
| JESD-609 Code | e3 | 
| Feature | Alarm, Leap Year, Square Wave Output, SRAM | 
| Part Status | Active | 
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 
| Number of Terminations | 8 | 
| ECCN Code | EAR99 | 
| Type | Clock/Calendar | 
| Subcategory | Timer or RTC | 
| Technology | CMOS | 
| Voltage - Supply | 1.8V~5.5V | 
| Terminal Position | DUAL | 
| Peak Reflow Temperature (Cel) | 260 | 
| Supply Voltage | 2.5V | 
| Terminal Pitch | 1.27mm | 
| Time@Peak Reflow Temperature-Max (s) | 40 | 
| Base Part Number | MCP7940N | 
| Pin Count | 8 | 
| Power Supplies | 2/5V | 
| Interface | I2C, 2-Wire Serial | 
| Memory Size | 64B | 
| Logic Function | Clock | 
| Max Frequency | 400kHz | 
| Time Format | HH:MM:SS (12/24 hr) | 
| Date Format | YY-MM-DD-dd | 
| Current - Timekeeping (Max) | 1.2μA @ 3.3V | 
| Time-Min | SECONDS | 
| Interrupt Capability | Y | 
| Voltage - Supply, Battery | 1.3V~5.5V | 
| Volatile | YES | 
| Information Access Method | I2C | 
| Height | 1.5mm | 
| Length | 4.9mm | 
| Width | 3.9mm | 
| Radiation Hardening | No | 
| REACH SVHC | No SVHC | 
| RoHS Status | ROHS3 Compliant | 
| Lead Free | Lead Free |