The DS1742-70+ is an integrated circuit (IC) component developed by Maxim Integrated. It is a real-time clock (RTC) and non-volatile RAM (NVRAM) module with an on-chip crystal to provide accurate timekeeping and data storage functionalities. Here's an overview of its key features:
1. Real-Time Clock (RTC): The DS1742-70+ includes a precise RTC circuitry powered by an on-chip 32.768kHz quartz crystal oscillator. It ensures accurate timekeeping with a resolution down to seconds, minutes, hours, day, date, month, and year.
2. Non-Volatile RAM (NVRAM): This IC combines reliable SRAM (Static Random Access Memory) with a non-volatile EEPROM (Electrically Erasable Programmable Read-Only Memory). The NVRAM feature enables data retention even during power loss or system shutdown, ensuring critical data is preserved.
3. Automatic Power-Fail Chip Enable: The DS1742-70+ provides an automatic chip enable for systems with power-fail problems. By utilizing its wide VCC power supply range (2.7V to 5.5V), it can automatically detect the power status and switch between the battery and the system power supply.
4. Battery Backup: An external lithium coin cell battery ensures power is supplied to the DS1742-70+ during voltage fluctuations or power interruptions
