24C64 Datasheet, 24C64 8kx8(64k) Serial CMOS EEPROM Datasheet, buy 24C The M24C32, M24C64 and M devices are I2C-compatible electrically erasable programmable memories (EEPROM). They are organized. 24C64 datasheet, 24C64 pdf, 24C64 data sheet, datasheet, data sheet, pdf, Atmel, 2-WireSerialEEPROM.

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I read somewhere that 5V will destroy the I2C pins from the Pi. To terminate the stream of bytes, the bus master must not acknowledge the last byte, and must generate a Stop condition, as shown in Figure 9.

I’m assuming that’s what it means as there’s no documentation. Please, try to see if the project Bank 1. I don’t find referrals to this value after the define. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

And you in your main haven’t a return value. We are glad that we were able to resolve this issue, and will now proceed to close this thread. TI is a global semiconductor design and manufacturing company. You decided to keep your code secret both the old one and your attempt at the new one.

However there is a way around that problem. Sign up using Email and Password. This is detailed in the linked specs.

24C64 Datasheet(PDF) – Microchip Technology

The eeprom is going to hold a hash that my code is going to look for on startup. The newly created question will be automatically dataasheet to this question.


My sensation is that you can’t read simly because you have addressed somewere else were you are thinking There is no need to get mad now.

Post as a guest Name. I read about the difference in address etc between these two chips, but things are not clear. Already have a hash check that works, just need to figure out how to turn off the arduino if the hash-check fails.

In reply to Clemens Ladisch:. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any datxsheet or guidelines and to comply with the Terms of Use of this site.

The addressing of eeprom is not so simple, I saw, and I needed a lot of works to understand exactly the method. Then, the process is delivered to the wire library that do the low level work to manage I2C bus. I’ve found example code for the AT24C in the playground but i’m failing to find anything for the chips I have. If you want somebody else to write the code for you, you have 24×64 hire him. If you do not understand how your existing code relates to the characteristics of the 24C64, you 246c4 not understand how to use the 24C04 either.

After the last memory address, the address counter ‘rolls-over’, and the device continues to output data from memory address 00h. I wrote my problem here to get support not lecture. Sep 20, But the specs say it needs 0. Use of the information on this site may require a license from a third party, or a license from TI. And if you want to connect more than one eeprom, you can buy the pcb of Bank. If you have further questions related to this thread, you may click “Ask a related question” below.


I’ve found where i’m getting issues.

m24C64 i2c eeprom

Thanks for your help. It turns out I can’t even write to the eeprom. But these two chips are not compatible different number of address bytesso it’s no surprise that the same code would not work.

Why not debug the code you have to find out where the problem is located.

The one I am currently using or the at24c library? To use it from the Pi you’d need to supply power from the 5V and ground pins. Ask a new question Ask a new question Cancel. At a minimum I’d check the voltage on the SDA output of the chip. Sign up using Facebook.

There are errors in your code. Has anybody used this?


The output data comes from consecutive address- es, with the internal address counter automatically incremented after each byte output. Locked Cancel Do you have another question? Here’s what works I include the non-working main: When a return 0 was there it made no difference. You definitely know more than me, but in your previous post you wrote 0.

Sep 20, 9: