Generic DS1307 Real Time Clock IC | I2C Interface | Low Power Consumption
₹45.00₹80.00 (price_including_tax) (-44%)
Implement precise timekeeping in your embedded projects with the DS1307 RTC IC. This robust chip provides vital calendar and clock functions, transforming simple microcontrollers into time-aware systems. Engineered for stability and ease of integration, it ensures dependable performance across diverse applications.
Reliable I2C real-time clock chip providing accurate timekeeping and calendar functions for embedded systems.
Provides precise date and time, essential for logging, scheduling, and system synchronization applications.
Simplifies wiring and coding, connecting seamlessly with popular microcontrollers like Arduino.
Maintains clock operation and user data even when main power is disconnected using battery backup.
The Engineering Behind DS1307
The DS1307 is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. It is a highly popular real-time clock (RTC) IC widely utilized in embedded systems for maintaining accurate time and date information, even when the main system power is off, thanks to its backup battery input. It communicates via the I2C (Two-Wire Serial) interface, making it straightforward to integrate with microcontrollers like Arduino and Raspberry Pi.
Its robust design in an 8-pin PDIP package ensures durability and ease of through-hole prototyping. The chip’s internal oscillator compensates for temperature variations, offering reliable timekeeping essential for data logging, scheduling, and timestamping applications where precision is paramount.
I2C Serial Interface
The DS1307 communicates through a simple, yet effective, I2C serial interface, requiring only two wires (SDA and SCL) for data exchange. This minimal pin count simplifies wiring and reduces complexity in circuit designs, enabling seamless integration with a wide array of microcontrollers and other I2C-compatible devices without consuming excessive I/O pins.
Battery Backup & Non-Volatile SRAM
A critical feature of the DS1307 is its integrated battery backup capability, which allows the clock to maintain time and date accuracy using a standard 3V lithium coin cell (e.g., CR2032) when the main power supply is removed. This ensures continuous operation and data integrity for its 56 bytes of non-volatile (NV) SRAM, crucial for storing critical system parameters or configuration data without loss.
Optimized for Performance & Integration
- Operating Voltage: 5V nominal (4.5V to 5.5V)
- Interface: I2C Two-Wire Serial (SDA, SCL)
- Timekeeping Range: Seconds, Minutes, Hours, Day, Date, Month, Year
- Package Type: PDIP-8 (Plastic Dual In-line Package)
- NV SRAM: 56 Bytes for user data
- Accuracy: Typically ±2 minutes/month without external compensation
- Backup Power: Supports 3V coin cell battery
Features & Benefits
- Full BCD Clock/Calendar: Provides precise timekeeping from seconds to years, including leap year compensation.
- I2C Serial Interface: Simplifies integration with microcontrollers using only two data lines, conserving I/O.
- Battery Backup Input: Maintains accurate time and date with external 3V battery during power loss.
- 56-Byte NV SRAM: Offers non-volatile storage for essential system data or configuration parameters.
- Low Power Consumption: Ideal for battery-operated applications, extending device runtime.
- PDIP-8 Package: Facilitates easy breadboard prototyping and through-hole PCB assembly.
Pro-Grade Advantages
- Highly reliable timekeeping solution for embedded systems.
- Simple I2C communication protocol for easy integration.
- Integrated battery backup ensures continuous time synchronization.
- 56 bytes of non-volatile RAM for critical data storage.
Technical Considerations
- Requires external 32.768kHz crystal for oscillation.
- Does not include an internal temperature-compensated oscillator for higher accuracy.
What is the primary function of the DS1307 Real Time Clock IC?
The DS1307 is designed to provide accurate time and date information (seconds, minutes, hours, day, date, month, and year) to embedded systems, even when the primary power supply is absent, using a backup battery.
Which communication interface does the DS1307 utilize?
The DS1307 uses the I2C (Two-Wire Serial) interface for communication, which requires only two signal lines (SDA for data and SCL for clock) for connection to a microcontroller.
What is the purpose of the 56 bytes of NV SRAM in the DS1307?
The 56 bytes of non-volatile (NV) SRAM can be used to store critical system parameters, configuration settings, or small amounts of user data that need to persist even when the main power is off and the chip is running on backup battery power.
Does the DS1307 require an external crystal?
Yes, the DS1307 requires an external 32.768kHz quartz crystal to operate its internal oscillator and maintain accurate timekeeping. This crystal is fundamental to its timing precision.
What operating voltage is typically required for the DS1307?
The DS1307 typically operates at a nominal 5V, with an acceptable range generally between 4.5V and 5.5V for full functionality when powered by the main system.
| Specification | Value |
|---|---|
| Input Voltage (Operating) | 4.5V – 5.5V DC |
| Timekeeping Accuracy | ±2 min/month (typ.) |
| Backup Supply Voltage | 2.0V – 3.5V (3V typical) |
| Interface Protocol | I2C (Two-Wire Serial) |
| NV SRAM Size | 56 Bytes |
| Operating Temperature Range | 0°C to +70°C |
| Package Pins | 8 |
| Crystal Frequency Required | 32.768 kHz |
Additional information
| Brand | Generic |
|---|---|
| Technology | Real Time Clock (RTC) |
| Operating Voltage | 5V |
| Control Interface | I2C |
| Package | PDIP-8 |
| Sensor Type | Time/Calendar |
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