Real Time Clock DS1302 CR1220 Battery Holder
$2.901pcs
DS1302 RTC with CR1220 holder, keeps accurate time after power loss! Built‑in trickle charge, easy battery swap for lasting reliability. Compact and simple to install, ideal for clocks and logging.
| Dimensions | 47.0 × 18.0 mm |
|---|---|
| Brand |
easyelecmodule |
3267 in stock
Product Introduction
The DS1302 real time clock has the ability to calculate seconds, minutes, hours, days, weeks, months, and years up to 2100, as well as the ability to adjust for leap years. It has a 318-bit buffer data storage RAM. The serial I/O port mode minimizes the number of pins. It operates within a wide voltage range of 2.0/5.5V. The operating current is less than 300nA at 2.0V. There are two transmission methods when reading/writing clock or RAM data: single-byte transmission and multi-byte transmission in character group mode. The 8-pin DIP package or the optional 8-pin SOIC package is based on surface mount assembly. It has a simple 3-wire interface. An optional industrial-grade temperature range of -40℃ to +85℃ is available. Dual power supply tubes are used for the main power supply and backup power supply.
Product Parameter
1. The PCB is a double-sided board with a full surface-mount design. It is elegant and imposing, with dimensions of 47mm x 18mm.
2. It has positioning holes with a diameter of 3mm, facilitating fixation.
3. The spare battery is a CR1220 battery with a voltage of 3V and is not rechargeable.
4. The crystal oscillator is 32.768KHz.
5. DS1302 is a So-8 package surface-mount component.
6. The module operates within a voltage range of 3.3V/5V and can be connected to 5V or 3.3V microcontrollers.
7. Operating temperature: 0℃~70℃
8. It comes with a power indicator light.
Product Application
1. Time synchronization in embedded systems: In embedded systems, the real time clock module can serve as the system clock source, providing accurate time information. Through the I2C interface, the microcontroller can read the current time of the real-time clock module and synchronize the time when necessary.
2. Timestamp of data recorder: In data recorder applications, the real-time clock module can provide an accurate timestamp for each recorded data item. This is very important for subsequent data analysis and processing.
3. Time synchronization in industrial control systems: In industrial control systems, multiple devices need to maintain time synchronization. The real-time clock module can serve as the common clock source for these devices, ensuring the accuracy of time synchronization between them.
4. Temperature monitoring: The temperature sensor built into the real time clock module can be used to monitor the environmental temperature. By connecting the real time clock module to the microcontroller, real-time temperature data can be read and processed or displayed.
Relative Information
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .
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