This is one of the semiconductor types. This part name is 24C02WP. This product has SERIAL 2K ( x 8) EEPROM functions. Manufacturers. Product Detail: Offer 24CD2WP ST, 24CD45, 24C84WP from Hong Kong Inventory. Components In Stock Suppliers in 【Price】【Datasheet PDF】 USA. Datasheet search engine for Electronic Components and Semiconductors. 24C02WP data sheet, alldatasheet, free, databook. 24C02WP parts, chips, ic.

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The WP pin stands for write-protected and this allows you to control if data can be written to the eeprom or not. Next we have to send the address on the eeprom we want to write to.

Adding External I2C EEPROM to Arduino (24LC256)

The data is read or written 24cdwp the start and stop conditions on every transition of SCL from high to low. The arguments it datasbeet are the same first two arguments the write function, the device address and the address on the eeprom to read from. This variable is not required but it allows us to easily change the address we want to access without going through all of the code and replacing the value.

Then connect the SCL pin 6 to pin 5 on the Arduino. Interface GPS with Arduino. This high-density System-in-Package SiP integrates controller, power switches, and support components. We first call the Wire.

What is Web Browser. Supply voltage; 5V up to 5.

24C02WP Datasheet, PDF – Datasheet Search Engine

It has a 2Kbits of memory size arranged in 32 pages of 8 byte each. Before we get into the software part lets hook up the 24LC chip up to our Arduino.


Similarly for read operation the device address to be sent is 0xA0 Datashet we do a bitwise AND to get just the last eight bits. Finally we have to pass along the byte we want to store.


The next argument is the address on the eeprom you want to write to and as stated above can be between 0 and 32, For the purpose of explaining how the address works we can ignore the Start and Acknowledge bits. If you are using Arduino 1. Choosing Motor 24cv2wp Robots. This allows the chip time to complete the write operation, without this if you try to do sequential writes weird things might happen. There are three address pins in AT24C02 for datwsheet a particular chip.

Check out our videos Follow us on: We need to send the MSB Most significant bits first so we have to shift our address to the right eight bits. The device can be addressed serially by the software.

There are 32 x 8 words each of one byte. This is written for Arduino versions before 1. The first send function takes the eeaddress and shifts the bits to the right by eight which moves the higher end of the 16 bit address down to the lower eight bits.


Next we start off just like we did with the write function by starting the process with beginTransmission and then we send the address we want to access; this works exactly the same way as the write function.

After our data and power pins are connected we have four left on 24LC chip, the WP pin and the three address pins. This function takes three arguments, the device address the disk1 variablethe memory address on the eeprom and the byte of data you want to write. Since our eeprom chip has 32, address locations we are using two bytes 16 bits to store the address but we can only send one byte at a time so we have to split it up.


The next function requestFrom sends the command to that chip to start sending the data at the address we set above.

Below is the dtaasheet tutorial code, scan over it and see if you understand it before I dive into what each section does.

Bi-directional pin for serial data transfer. Vcc enables write protection.

For more details on different operations and addressing, refer interfacing 24C02 with SPI Module of Arduino. The next three bits A2,A1,A0 are the important bits that we can change so lets look at the simple dataaheet below to see what address the chip will have depending on what we set these pins to.

Time to move on to software! Skip to main content. Using the image above as a guide lets begin to wire the chip. Virgin Galactic — Commercial Space Flight. Arduino Sketch Below is the entire tutorial code, scan over it and see if you understand it before I dive into what each section does.

Finally a stop condition is provided. With the address pins connected the hardware part of this tutorial is complete and every pin of the 24LC should be connected to either Vcc, GND or the Arduino.