DS1302DTR

The DS1302DTR is a high-performance, low-power, real-time clock/calendar chip with a built-in 31×8 static RAM. It is designed for applications requiring accurate timekeeping and data storage, such as electronic clocks, data loggers, and embedded systems.

Key Features:

1. Real-Time Clock/Calendar:

   • Provides seconds, minutes, hours, day, date, month, and year information.
   • Automatically adjusts for months with fewer than 31 days and includes leap-year compensation valid up to the year 2100.
   • Operates in either 24-hour or 12-hour format with an AM/PM indicator.

2. Low-Power Consumption:

   • Operates within a voltage range of 2.0V to 5.5V.
   • Consumes less than 300nA at 2.0V, making it ideal for battery-powered applications.

3. Serial Communication Interface:

   • Communicates with a microprocessor via a simple serial interface using only three wires: CE (chip enable), I/O (data line), and SCLK (serial clock).
   • Supports single-byte or multiple-byte (burst mode) data transfer for reading or writing clock or RAM data.

4. Built-In RAM:

   • Features 31 bytes of static RAM for temporary data storage.
   • RAM can be accessed in single-byte or burst mode operations.

5. Backup Power Supply:

   • Supports a backup power source (VCC1) to maintain clock operation and RAM data retention when the main power (VCC2) is off.
   • Includes a trickle-charge circuit to recharge the backup battery when the main power is present.

6. Industrial Temperature Range:

   • Available in versions that support an industrial temperature range of -40°C to +85°C.

7. Package Options:

   • Offered in various package configurations, including DIP (dual in-line package) and SO (small outline package), to accommodate different PCB layouts and design requirements.

Applications:

• Electronic Clocks
• Data Loggers
• Embedded Systems
• Any application requiring accurate timekeeping and low power consumption.

Note:

While the specific suffix “DTR” is not explicitly mentioned in the sources provided, it is likely a reference to a particular packaging, configuration, or temperature range variant within the DS1302 family. Therefore, it is important to consult the official datasheet or contact the manufacturer for detailed information on any specific variant.

In summary, the DS1302DTR (assuming it’s a variant of the DS1302) is a versatile, low-power RTC chip with built-in RAM, suitable for a wide range of applications requiring accurate timekeeping and data storage.