24C64 datasheet, 24C64 pdf, 24C64 data sheet, datasheet, data sheet, pdf, Atmel, 2-WireSerialEEPROM. 24C 24C 64K-bit/32K-bit. 2-WIRE SERIAL CMOS EEPROM. JANUARY Full pin-to-pin with ATMEL and MICROCHIP. • 8-pin PDIP. Microchip Technology / Atmel EEPROM 32/64k 2-Wire Bus datasheet, inventory Microchip Technology / Atmel AT24C64API C64A- 10PI
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Adding External I2C EEPROM to Arduino (24LC256)
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.
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 datsaheet replacing the value. Add to Watch list Watching Watch list is full. This means our 24LC chip gets the address and then which tells datashheet to store the next byte in address location 20, The Write Protect pin allows you to protect the top bytes of memory from changes – if this pin is low 0V then all writes are allowed.
The next argument is the address on the eeprom you want to write to and as stated above can be between 0 and 32, This is written for Arduino versions before 1. The WP pin stands for write-protected and this allows you to control if data can be written to the eeprom or not.
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Next lets go ahead and connect the data pins to the Arduino board. Before we get into the software part lets hook up the 24LC chip up to our Arduino.
The arguments it accepts are the same first two arguments the write function, the device address and the address on the eeprom to read from. The first argument is the address of the device you want to write to, in our case we only have one device disk1 so we pass this on.
Time to move on to software! Back to home page. Learn More – opens in a new window or tab Any international postage and import charges are paid in part to Pitney Bowes Inc. To illustrate this lets follow the steps below. Finally we have to pass along the byte we want to store. Description Postage and payments. The item you’ve selected wasn’t added to your basket. Have one to sell? Add to Watch list Watching.
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The seller hasn’t specified a postage method to United States. 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.