DS1302 REAL TIME CLOCK MODULE

The DS1302 RTC Real Time Clock Module is a low-power, full binary-coded decimal (BCD) clock/calendar with 31 bytes of static RAM. It communicates with a microcontroller via a simple serial interface and keeps track of seconds, minutes, hours, day, date, month, and year with leap-year compensation. The module also features a backup battery socket to retain timekeeping when the main power is off.

Key Features of DS1302 RTC Real Time Clock Module:

• Real Time Clock (RTC): Maintains accurate time including seconds, minutes, hours, day, date, month, and year.
• Leap Year Compensation: Automatically adjusts the date for months with fewer than 31 days and leap years.
• Low Power Operation: Operates on low power and maintains timekeeping during power failures with a backup battery.
• Serial Communication: Simple 3-wire serial interface for communication with microcontrollers.
• Backup Battery Support: Includes a CR2032 battery holder to maintain clock data when powered off.

Technical Specifications of DS1302 RTC Real Time Clock Module:

• Operating Voltage: 2.0V to 5.5V
• Timekeeping Current: Less than 300nA at 2.0V
• Clock Format: 24-hour or 12-hour with AM/PM
• Memory: 31 bytes of general-purpose static RAM
• Interface: SPI (Serial Interface with CE, I/O, SCLK)
• Battery Backup: Supports standard CR2032 coin cell

Mechanical Specifications of DS1302 RTC Real Time Clock Module:

• PCB Dimensions: Approx. 44mm x 23mm
• Mounting Holes: 2 pre-drilled holes for secure attachment
• Pin Header: Male header for easy breadboard use
• Battery Holder: On-board socket for CR2032 battery

Dimensions:

• Length: 44mm
• Width: 23mm
• Height (with battery): 14mm approx.

Mounting Options:

• Breadboard Mount: Fits standard 2.54mm pitch breadboards.
• PCB Mount: Solder directly to custom PCBs using male headers.

Schematic Diagram, Connection, Wiring and Pinout of DS1302 RTC Module:

• VCC: Power supply input (3.3V or 5V depending on microcontroller)
• GND: Ground connection
• CLK (SCLK): Serial Clock Input
• DAT (I/O): Data line for input/output
• RST (CE): Chip Enable for communication initiation

Datasheet of DS1302 RTC Real Time Clock Module:

• Download DS1302 Datasheet (PDF)

Applications of DS1302 RTC Real Time Clock Module:

• Timekeeping in Embedded Systems: Maintains real-time in microcontroller-based projects.
• Data Logging Applications: Timestamps for sensor data and event logging.
• Alarm and Clock Projects: Useful in digital clocks, reminders, and timers.
• Access Control: Used in systems where time tracking is essential.
• Automation Systems: Scheduled operations in home or industrial automation.

Equivalent of DS1302 RTC Real Time Clock Module:

• DS1307: I2C-based RTC with EEPROM storage
• PCF85263A: Low-power RTC with configurable alarms
• RV3028: High-precision, ultra-low power RTC

Package Includes:

• 1 x DS1302 RTC Real Time Clock Module