The DS1307 is a versatile real-time clock (RTC) chip that has become an integral part of many electronic devices, providing accurate timekeeping and timestamping capabilities. In this article, we will explore the specifications, features, and a special model of the DS1307 to help you know more about it.
What is DS1307?
The DS1307 is a low-power real-time clock (RTC) chip manufactured by Maxim Integrated. It is commonly used in various electronic devices and embedded systems to keep track of time and date accurately. The DS1307 provides a 56-byte static RAM for storing time and date information.
What is the DS1307 specification?
| Product Attribute | Attribute Value |
|---|---|
| Product Category | Integrated Circuits Clock/Timing Real Time Clocks |
| SMD/SMT | |
| SOIC-8 | |
| I2C, Serial | |
| YY-MM-DD-dd | |
| HHMMSS (12 hr, 24 hr) | |
| Backup Switching | |
| 56 B | |
| 5.5 V | |
| 4.5 V | |
| – 40 C | |
| + 85 C | |
| Reel | |
| Cut Tape | |
| MouseReel | |
| Function | Calendar, Clock |
| Operating Supply Current | 1.5 mA |
| Product Type | Real Time Clocks |
| Series | DS1307ZN |
| Subcategory | Clock & Timer ICs |
| Part # Aliases | DS1307ZN 90-1307Z+NTR |
| Unit Weight | 0.019048 oz |
What is the function of DS1307?
The main function of DS1307 is to provide accurate timekeeping capabilities to electronic systems. It includes a built-in quartz crystal oscillator that allows it to maintain accurate time and date information even when the power is turned off. The DS1307 communicates with the host microcontroller or system through an I2C interface, enabling easy integration into various applications.
What is the equivalent of DS1307?
There is no direct equivalent to DS1307 as it is a specific model of RTC manufactured by Maxim Integrated. However, there are other RTC ICs available in the market from different manufacturers that offer similar functionality. Some alternatives include DS3231, PCF8563, MCP7940, and PCF8583, among others.
What is the difference between DS3231 and DS1307?
DS3231 and DS1307 are both RTC ICs, but they have some differences. Here are a few key distinctions:
- Accuracy: DS3231 has higher accuracy compared to DS1307. DS3231 typically has a deviation of only a few seconds per month, while DS1307 may deviate by several minutes per month.
- Temperature Compensation: DS3231 includes temperature compensation, which helps improve its accuracy across varying temperatures. DS1307 does not have this feature.
- Additional Features: DS3231 offers a programmable square wave output and two programmable alarms, which are not present in DS1307.
- Price: Due to its improved features, DS3231 is generally priced higher than DS1307.
How accurate is DS1307?
The accuracy of DS1307 can vary depending on factors such as temperature, power supply stability, and crystal aging. In ideal conditions, DS1307 can achieve an accuracy within a few minutes per month. However, it is important to note that the accuracy may degrade over time, and periodic calibration or synchronization with a more accurate time source might be necessary for applications requiring high precision.
How to read data from DS1307?
To read data from DS1307, you typically need to interface it with a microcontroller or a system that supports I2C communication. Here are the general steps involved:
- Connect the DS1307 to your microcontroller/system using the I2C bus, ensuring proper wiring and addressing.
- Initialize the I2C bus and set the appropriate address for DS1307.
- Send a request to read data from the specific registers in DS1307, such as seconds, minutes, hours, day, date, month, or year.
- Receive the data from DS1307 through the I2C bus and store it in variables or process it as needed in your program.
- Repeat the above steps periodically or whenever you need to update or retrieve the time and date information from DS1307.
One Model: DS1307ZN+T&R
Introduction
The DS1307ZN+T&R is a highly integrated real-time clock (RTC) chip designed by Maxim Integrated. RTCs are crucial components in electronic devices that require accurate timekeeping and timestamping capabilities. The DS1307ZN+T&R is specifically designed for applications that demand low power consumption and compact size without compromising on accuracy.
Features
- Accurate Timekeeping: The DS1307ZN+T&R utilizes a 32.768kHz quartz crystal oscillator, ensuring precise timekeeping with minimal drift.
- Battery Backup: It features a built-in battery backup circuit that allows it to continue running and maintaining accurate time even during power outages or when the main power source is disconnected.
- I2C Interface: The DS1307ZN+T&R employs an I2C interface, making it easy to integrate into various microcontroller systems. This interface enables simple communication with the RTC, allowing for easy configuration and retrieval of time data.
- Low Power Consumption: With a typical operating current of just 0.5μA, the DS1307ZN+T&R is highly energy-efficient, making it suitable for battery-powered devices or applications where power conservation is crucial.
- Alarm Functionality: The chip provides alarm functionality, enabling users to set specific times for triggering events or notifications.
- Programmable Square Wave Output: The DS1307ZN+T&R includes a square wave generator with a selectable frequency output, offering additional timing capabilities for applications that require periodic signals.
Pcb symbol and Footprint
Datasheet
Datasheet Document Link: DS1307ZN+T&R Datasheet
Conclusion
Overall, the DS1307 offers an impressive array of features, making it a reliable choice for applications that demand precise timekeeping, low power consumption, and easy integration. Whether it’s used in industrial automation, consumer electronics, or other time-sensitive applications, the DS1307 continues to prove its worth as a dependable RTC solution.
