In this article we will show how to interface the FOX board to a Real Time Clock chip from Dallas/Maxim type DS through the I2C protocol. DS, DS Datasheet, DS Trickle Charge Timekeeping Chip, buy DS Photograph. DS Dallas Semiconductor IC. Real Time Clock – DS This is a VERY simple tutorial on how to use the DS Real Time Clock with an Arduino, or Versilino, board. I will walk you.

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The chip will be read by the Linux system through the I2C interface dallsa. That buffer can be read in a single communication session, called a “burst” mode. The shipping office is closed from 21 dec up to 7 jan Other schematics use two 22pF with the crystal. This article is obsolete or related to a discontinued product.

Use it with Arduino 1. Terms of use of this documentation. See the datasheet for full specifications and a circuit. Cheap modules with the DS and DS have often problems with the crystal and the xs1302. In the proposed circuit as an application example, we used a common lithum battery type CR So the code has to detect that condition to prevent an extra clock pulse.


The Year data of the DS is only two digits We not provide any ds13002 support for the Open Source software which can running on our board but, through these pages and forum posts, we provide all of the information required to obtain the sources, install, use and update the Open Source software available on Internet.

Add a Dallas DS1302 I2C Real Time Clock

To guarantee the best stability of the timing it is recommended to follow the hints presented in the datasheet of the DS chip in terms of correct positioning of the Hz quartz.

Arduino on other Chips. Sources for Electronic Parts. The page at maxim for the DS with all information and datasheet: The code below contains basic interface functions for the DS The most used date and time functions for the Arduino: The three pins for the interface should avoid to use the internal pull-up resistors of the Arduino.

The last clock pulse of the address using the rising edge is also the first clock pulse of the data to read using the falling edge.

Arduino Playground – DS

Terms of use of this documentation Terms and conditions Acme Systems srl provided this documentation “as is” without warranty or guarantees of any kind. The data in this ram will get lost if the Arduino is dallxs, and the battery or supercap gets empty.


That would result in bad clock data. The most used name is “3-wire interface”.

To prevent that, the DS has a buffer to store the clock data. This is a cheap module with the DS The DS can be easily connected to the Arduino. That is also es1302. The lithium batteries cannot be recharged hence it is necessary to block the DS chip in its recharge battery function. This circuit has pull-down resistors which are an extra, in many cases they are not needed.

It has a Leap-Year compensation from up to for a value of In case of sharing please indicate the origin: A vallas of For the name of a month, this page contains many languages: The chip has 31 bytes of ram. You are strongly advised to use a DSwhich is very reliable and accurate and needs only a battery to run the crystal is inside the Vs1302 At this moment there is no official library for date and time functions for the Arduino.

Board Setup and Configuration. I was noted that the code could be improved.