Product Details

Product Description

2pcs/lot DS1302 Real Time Clock Module with CR2032 Button Battery 31 x 8 RAM buy bulk electronics

Features:
DS1302 real time clock module
DALLAS DS1302 is the company launched trickle charge the clock chip, which contains a real-time clock / calendar and 31 bytes of static RAM, via a simple serial interface to communicate with the microcontroller. Real-time clock / calendar circuit provides seconds, minutes, hours, days, weeks, months, years of information, the number of days per month and leap year automatically adjust the number of days. Clock operation by AM / PM indicator decided to use 24 or 12 hour format. DS1302 between the microcontroller can simply adopt the way synchronous serial communication port only used three lines: (1) RST Reset (2) I / O data lines (3) SCLK Serial Clock. Clock / RAM read / write data in a byte or up to 31 bytes of character set type communication. DS1302 work to maintain low power consumption data and clock information when power is less than 1mW

DS1302 key performance indicators:

    Real-time clock with energy calculations before 2100 seconds, minutes, hours, day, week, month, year capacity, as well as the ability to leap year adjustment
     serial I / O ports such a way that a minimum number of pins
    Wide operating voltage range 2.0 5.5V
    2.0V, operating current of less than 300nA
     Read / write clock or RAM data transfer mode, there are two single-byte and multi-byte transfer mode transmission character set
    8-pin DIP package or an optional 8-pin SOIC surface mount package under
    Simple 3-wire interface
     Vcc = 5V and TTL compatible
     Optional industrial temperature range of -40 to +85
    Dual power tubes used for the main power supply and backup power supply

DS1302 real time clock module parameters are as follows:

    1. PCB single panel, size: 44mm * 23mm * 1.6mm
    2. With four positioning holes, diameter 3.1mm
    3. Backup battery is genuine celestial CR2032, Voltage 3V, current 260mAh, non-rechargeable batteries. Theoretical data retention time is more than 10 years!
    4. Crystal 32.768KHz, Japan imported crystal, matching capacitance 6pF, size 2 * 6mm
    5. DS1302 is made large 8-pin DIP chip, chip below IC socket for easy replacement and swap chips
    6. Module operating voltage compatible 3.3V/5V, can be connected with 5V and 3.3V microcontroller
    7. Working temperature: 0°--- 70°
    8. 4.3x 2.3cm

Wiring methods (procedures in order to provide an example, you can access any IO port, modify the port definition in the program can be):

    VCC → +5 V/3.3V
    GND → GND
    CLK → P02
    DAT → P01
    RST → P00

Note:
1. VCC and GND Do not reversed, it would burn the chip
2. C51 MCU P0 port requires pull-up resistor, if your device does not have a pull-up resistor can be connected to other ports data lines

Package included:
1x DS1302 Module
1x CR2032 battery

Shipping and Payment

Payment:

1. We accept payment based on Western Union, Money Gram and Paypal.

2. The price term is FOBShenzhen, Ex-work Shenzhen, or CIF ( destination port ).

3. The price here is for your reference, specific price is based on your order quantity. Cheaper price will offer for larger quantity.

1. By express suggested by DHL, UPS, EMS, or TNT.

2. By air, by sea and by express are all available.

Contact

Skype: live:linda_9053

TM: cn1517132001uppp

Whatsapp: +8613632900370

QQ: 1741758568

Tel: 8613632900370

FAQ

Q1. How can we know the product quality?

A1: We suggest you to order a sample. Also, you can send us email for detail photos for checking if you cannot get enough information in the product page.

Q2. Is it the final price in the price list?

A2: You can find reference prices in the price list. According to your quantity and models, we will offer you a best price.

Q3. When can we get reply after sending you the RFQ?

A3: Our working time is 9:30am. - 6:30pm. , Monday to Saturday. Your RFQ will be replied immediately during working time, in 24hours during non-working time.

Q4. Can I get free samples?

A4: Yes, some samples are free for customer, but you need to pay for the express fee. For details please send message to our sales service.

Q5. Can we get support if we have our own market position?

A5: Please inform us your detailed mind on your market demand, we will discuss and propose helpful suggestion for you, to find the best solution for you.

Q6. Is there cheap shipping cost to import to our country?

A6: For small order, express will be faster but the shipping cost will be expensive, post air mail will be cheaper but will take 1-2 month of shipping time. And for bulk order, sea shipping way is best but take much time. For urgent orders, we suggest via air to airport plus our ship partner send to your door.

Q7. Can you offer OEM/printing logo on samples?

A7: Yes, but prices is different according to different logo styles such as letters, photo, size, colors and so on. For more detail please send message to our sales service.

Q8. Can we visit your factory?

A8: Yes. Due to too many visiting requirements, you need to make an appointment with our sales service. Customers who have placed an ordered will have priority.

Q9. Can you provide us product’s pictures?

A9: Yes, for online resellers we will provide you the product’s pictures. However, you need to send us your webpage or place an order from us.

Q10. What is the Warranty for your products?

A10: One year warranty for all electronic products. If any quality problems on our side occured in this period, we will take on the shipping cost and replacement.

Q11. How to order?

A11:

1. Tell us which models,Quantitiy,color you want to order

2. We will make PI(performa invoice) for your order to confirm

3. Checking the PI, we will delivery the goods ASAP when we receive your payment. And the shipping cost is depending on the weight.

Our Services

1. Supply high quality Accessories.

2. Supply Ability:100,000 pieces per month.

3. Our professional service can help you greatly to save cost and control quality.

4. With large production capacity to ensures the shipment on time.