The MCP79412-I/SN is an IC (Integrated Circuit) component developed by Microchip Technology. It is a low-power real-time clock (RTC) module with SRAM and EEPROM memory, suitable for a wide range of applications. Here is an overview of its key features:
1. Real-Time Clock:
- Accurate timekeeping with a 32.768 kHz crystal oscillator.
- Provides seconds, minutes, hours, day, date, month, and year information.
- Supports leap year and daylight saving time adjustments.
2. Non-volatile Memory:
- 64 bytes of battery-backed SRAM for data storage.
- 1 Kbit of EEPROM for long-term data retention.
3. I2C Interface:
- Communicates via I2C (Inter-Integrated Circuit) protocol.
- Supports clock/calendar and memory read/write operations.
- Can operate in both standard (100 kHz) and fast (400 kHz) modes.
4. Power Management:
- Offers power-fail timestamp (PFT) to record the last power failure time.
- Integrated backup power circuitry with an external coin cell or supercapacitor.
- Low current consumption, ideal for battery-powered devices.
5. Alarms and Timers:
- Two programmable alarm interrupts with separate enable/disable control.
- Configurable square wave output for periodic alarms.
- Built-in 32-bit timer for generating periodic time events
