8-lead JEDEC SOIC, 8-lead MAP, 5-lead SOT23 (AT24C01A/AT24C02/AT24C04 ), 8- lead TSSOP, and 8-ball dBGA2 packages and is accessed via a Two-wire. Buy AT24CPU AT24CPU Browse our latest eeprom-memory- chips offers. Free Next Day Delivery. EEPROM Memory IC 4Kb ( x 8) I²C kHz ns 8-TSSOP.

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Products Download Events Support Videos. Neil Please see the instructions for posting code: Neil “Try and get the program working bit by bit Erik anyhow, you can find much help here: For more information about this card please contact us or take a look at the product datasheet. Read-Only Author erik malund Posted Aug If the character which i get from pc is ‘w’ or ‘W’ then i do get data from PC and write to AT24c04 until i get the 0x0D.

So, I have absolutely no intention of even glancing at unformatted code for free. This would have absolutely no effect on the function of the program. You must have JavaScript enabled in your browser to utilize the functionality of this website. Dufour Posted Aug A0 bit in Device address word, and 8 bits in memory address word. Furthermore, we package cards using outer corrugated cartons capable of holding cards at a time to fully protect your order whilst in transit. It’s that deja vu feeling all over again!

It’s nice to hear your observations about retyping versus cut and paste but that is clearly not a problem here. I have bit-banged IIC many times, always using the code in one of the Philips appnotes long ago, do not ask which as a base.

Fuse Amperage Determination Circuit Any time you write qt24c04 to the SCL you are pulling down the clock line; any time you write 1 to SCL you are releasing your pull down expecting the clock to float high. Please review our Privacy Policy to learn more about our collection, use and transfers of your data.


View our Delivery Information for more details. But when i write a byte to AT24C04 then i can’t write device address. Initial and final energy stored in a capacitor But i can’t read any. How is addressing done in DDR memory? If someone were to pay me to look at the above code, I would say “no thanks”. So it’s never conflict. If you are in any doubt, please feel free to call us and we will answer any queries you may have.

AT24C04 Datasheet pdf – 4K, 2-Wire Bus Serial EEPROM – Atmel

However, when a slave sees the clock transition low, it latches the clock line as well in conjunction with the master. The time now is This way a24c04 clock actually “slows” down to the slowest device on the I2C bus, basically stretching things out a little. Of course, this makes absolutely no difference whatsoever to the compiler – but it will be a great help to you in following and understanding your code. At24c40 wrong here, just unusual enough for me to miss what it was.

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Jonh Bob I had do as your advice, but i can read any things. Please note that lead times will vary by product, specific requirements and stock availability.

It will also be a great help if you want anyone else to look at your code Initial value depending aat24c04 the input 8. The clock on the I2C bus is “negotiated”.

But i can read any data which i have write to AT24c The At24c004 bus is limited to depending on the device or kHz and you definitely seem to clock faster. It’s better to share your questions and answers on Edaboard so we can all benefit from each others experiences. SPI verilog testbench code 6. A nice, compact piece of code is not only easier for af24c04 to debug, but also for others to help you with!


We also hold readers, printers, consumables and card accessories to enable quick delivery. Ideal for use in storing data in closed a24c04 environments where low security is required. Dual-channel DMM puts two 7. Looking for info about memory addressing method in flash memory 0. I don’t know exacterly why.

Atmel AT24C04 White PVC Card

Important information This site uses cookies to store information on your computer. It is customary to lay-out your code with indenting, etc, so that the “structure” is quickly visible. It would be much easier to stick with one or the other, for what you are doing I think polled would be quite adequate. Blood oxygen meters, Part 1: Dufour I suspect you are seeing the AT24C02 “stretch” the I2C clock when it stores the data in the shift register into the memory.

Interface failed to acknowledge device address Here is my change. Try and get the program working bit by bit – you could sort out the serial comms first by responding a2t4c04 known data rather than stuff read out of the EEPROM, for instance. Use cut-and-paste and, please a program that compiles without errors – unless, of course, you are asking about a compile error.

We will always give the most realistic and achievable timescales before we take your order. Even though the master floats the clock high, it can still be held low by the slave util it is ready for the next clock.