DS1302 is a real-time clock capable of counting seconds, minutes, hours, dates, months, days of the week, and years up to 2100. The leap year compensation is made to incorporate internally. The static RAM DS1302 is 31 Bytes. A simple serial SPI interface makes DS1302 communicate and interact with any microprocessor or microcontroller having an SPI communication interface. There are two forms of time indication i.e. 24 hours format or 12 hours with an indication of AM/PM.
It operates on very low power. Retention of data and clock information can only take 1µW at most. Synchronous serial communication is used for connecting this RTC chip with a microprocessor. RST (reset), I/O (data line), and SCLK (serial clock) are the three terminals required for communication with DS1302. Single-byte or multiple-byte modes are utilized for data transferring to or from the clock or RAM.
- A real-time clock counts minutes, seconds, dates, hours, month day of the week, years, and leap-year compensation up to 2100.
- Single and Multiple (Burst mode) data transfer for Read and Write of Clock or RAM data
- 31*8 battery-backed general-purpose RAM
- Simple interface using 3-wire
- 2V to 5.5V full operation
- Compact size
- Available Package: 8-pin DIP
- Supply voltage (typically): 3.3V
- Voltage range on any pin (with respect to ground): -0.5V to 7.0°C
- Operating Temperature (Commercial): 0°C to +70°C
- Operating Temperature (Industrial): -40°C to +85°C
- Storage Temperature range: -55°C to +125°C
- Soldering Temperature: 260°C