Microchip MCP7940N I2C Real Time Clock, SOIC 8, 1.8V-5.5V
- SKU
- C3-SC19181
- EAN
- 3562094192841
Battery-backed I2C RTC with SRAM, dual alarms, 1.8V-5.5V, SOIC 8, AEC-Q100. Low power, precise timekeeping.
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Technical Specifications
- Embedded systems
- Data loggers
- Automotive electronics
- Industrial applications
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- Battery-backed I2C real-time clock/calendar with SRAM
- Dual programmable alarms
- 64-byte battery-backed SRAM
- Clock output with selectable frequency
- Alarm output, general purpose output
- Automatic switchover to battery backup
- Time logged on switchover to and from battery mode
- On-chip digital trimming/calibration: ±1 PPM resolution, ±129 PPM range
- I2C interface up to 400 kHz
- Leap year compensated to 2399
- 12/24 hour modes
- Supply voltage: 1.8V to 5.5V
- Typical timekeeping current from VCC: 1.2 µA at 3.3V
- Clock frequency: 100 kHz max (VCC = 1.8V to 5.5V)
- VCC fall time: 300 µs min (VCC = 1.8V to 5.5V)
- Package: SOIC, 8 pins
- Operating temperature: -40°C to +85°C
- AEC-Q100 qualified
- Dimensions: 43mm x 33mm x 15mm
- Weight: 1g
- Date Format: YYYY:MM:WK:DD:Hr:Min:Secs
- Time Format: 12Hr / 24Hr
- Clock IC Type: Alarm RTC
- Supply Voltage Min: 1.8V
- Supply Voltage Max: 5.5V
- Clock IC Case Style: SOIC
- IC Case / Package: SOIC
- of Pins: 8Pins
- IC Interface Type: I2C
- Qualification: AEC-Q100
- Operating Temperature Min: -40°C
- Operating Temperature Max: 85°C
- Automotive Qualification Standard: AEC-Q100
- SVHC: No SVHC (04-Feb-2026)
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