DS chip is commonly used as DS RTC module which comes with a 32 kHz crystal and on-board battery backup all in a small SIP. Part Number: DS, Maunfacturer: Maxim, Part Family: DS, File type: PDF, Document: Datasheet – semiconductor. DS The DS trickle-charge timekeeping chip contains a real-time clock/ calendar and 31 bytes of static RAM. It communicates with a microprocessor via.

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See the datasheet for full specifications and a circuit. They often don’t work very well. Cheap modules with the DS and DS have often problems with the crystal and the voltage.

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DS Dallas Trickle Charge Timekeeping Chip ChipFind Datasheet Archive |

That would result in bad clock data. 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. If a byte is read, the addres is written first. Sources for Electronic Parts. The Year data of the DS is only two digits The standard date and time functions like: Other schematics use two 22pF with the crystal. For the name of a month, this page contains many languages: That dw1302 also wrong.


It has a Leap-Year compensation from up to for a value of A crystal of The Year ‘0’ isand not or I was noted that the code could be improved.

The three pins for the interface should avoid to use the internal pull-up resistors of the Arduino. Datasehet schematics on the internet have pull-up resistors on the three interface lines. The chip has 31 bytes of ram.

The most used date and time functions for the Arduino: Board Setup and Configuration. 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 DS The Vcc1 is for a battery or a rechargable battery or a supercap.

To prevent that, the DS has a buffer to store the clock data. The data in this ram will get lost if the Arduino is off, and the battery or supercap gets empty. At this moment there is no official library for date and time functions for the Arduino. This circuit has pull-down resistors which are an extra, in many cases they are not needed.


Use it with Arduino 1. That buffer can be read in a single communication session, called a “burst” mode. The most used name is “3-wire interface”. During reading, the clock could rollover.

For more info pleae look at this Forum Post. The DS can be easily connected to the Arduino. That way the check for the 7th bit is not needed, since the line is always released.

Datasheet «DS1302»

The page at maxim for the DS with all information and datasheet: So the code has to detect that condition to prevent an extra clock pulse. This is a cheap module with the DS The playground is a publicly-editable wiki about Arduino.

The code below contains basic datssheet functions for the DS Arduino on other Chips.