- Description:
The DS1302 is a trickle charge clock chip from DALLAS that contains a real-time clock / calendar and 31 bytes of static RAM to communicate with the microcontroller through a simple serial interface. Real-time clock / calendar circuit provides seconds, minutes, hours, days, weeks, months, years of information, the number of days per month and leap year number of days can be adjusted automatically. The clock operation can be determined by the AM / PM indication in a 24 or 12 hour format. (1) RST reset (2) I / O data lines (3) SCLK serial clock. (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 group communication. DS1302 power consumption is very low to maintain data and clock information when the power is less than 1mW
Features:
real-time clock with 2100 can be calculated before the seconds, minutes, hours, days, weeks, months, years of ability, as well as leap year adjustment
31 8-bit temporary data storage RAM
Serial I / O port mode makes the pin count the least
Wide operating voltage 2.0V
working current 2.0V, less than 300nA
Read / write clock or RAM data, there are two transfer methods Single byte transfer and multi-byte transmission character group mode
8-pin DIP package or optional 8-pin SOIC package according to surface mount
simple
3-wire interface compatible with TTL Vcc = 5V
Optional industrial temperature range -40 +85
dual power supply for the main power supply and backup power supply
DS1302 real-time clock module parameters are as follows:
1.PCB for the single-panel, size: 44mm * 23mm * 1.6mm
2. With 4 positioning holes, diameter 3.1mm
3. Backup battery for the authentic celestial sphere CR2032, voltage 3V, current 260mAh, non-rechargeable battery. Theoretical data retention time greater than 10 years!
4. Crystal 32.768KHz, Japan imported crystal, matching capacitance of 6pF, size 2 * 6mm
5.DS1302 8-pin plug-in large chip made, the chip below IC Block, easy to replace and plug the chip
6. Module operating voltage is compatible with 3.3V / 5V, and 5V and 3.3V single-chip connection
7. Operating temperature: 0 ° --- 70 °
Wiring method (to provide the program as an example, you can access any IO port, modify the port definition in the program can be):
VCC → + 5V / 3.3V
GND → GND
CLK → P02
DAT → P01
RST → P00
|
1,Shipping Warranty:We usually ship goods By DHL, UPS, EMS, Singpost airmail, and HongKong Airmail.
DHL: 3-5 days
UPS: 5-7 days
EMS: 10-15 working days
Chinapost/HongKong Airmail: 7- 25 working days. At most 45 days.
If you have not received the goods during the normal time, please contact us for checking the package status timely online or by email.
2,Product replacement and warranty
If you have any prodcut quality problem, you can send it back to us with the original condition,we will repair or exchange new one for you.
If you have any using problem of the products which buy from TWE, please feedback to us first, and we will discuss the issue with you. Via our technical support, we can dig out your using problem via our technical support in most of cases.
Lost Products: If products get lost in delivery, or you still do not get your item for a long time, please contact our customer service timely. We will deal with this ASAP. Please do not deal with it all by yourself, we want you communicate with us. Usually, we will provide tracking number and tracking link timely. If products get lost on the way and we get confirm from couriers, we will arrange redelivery for your products. If you want ship it through express, then you need to pay express shipping fee.
3,Technical Service:
. If you have technical problem with the product you received from us, please contact us online or by email: Contact us
Remote help service:
If your problem needs to be solved by remote help by our engineer, please download the teamviewer software, install it on your computer, then give us ID and password for remote help.
Wish You Have A Pleasant Purchasing Time!
