Mar 23 2020

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Then, set the other signals and do check you see them all as required.

Usually reading a byte from flash means: CS high Writing the flash is more complicated – to write a byte into the flash require ie. Thanks for you quick reply, Can you please be more specific about this: I appreciated your help pito, In the attachement is the screenshot from command definition table of this Flash memory.

I made an sst39sf programmer you can base your programmer off my code see This will run on your arduino uno note that I used avr-gcc to compile it instead of the arduino ide https: Below, Is the circuit: Please in the attachement the timing diagram of Write operation, and below the flow of what I have understood from it. The same with write. The detailed timing diagrams are datqsheet important for you when working with arduino, except the write process – either you have to wait long enough, or you have to poll certain data bits until the flash is datashwet reading a flash takes ns, writing takes several msecs usually.


[Solved] Flash Memory Programmer “AM29FB”

I read some replies from people in some forums, they claimed that arduino UNO which I use, is datsheet fast enough to drive correctly AM29FB because arduino can’t drive 20ns or something like thatin other hand some others confirm that’s possible to do.

LOW For the other pins, they are directly connected to the arduino, despite of this I have test them out with Voltmeter too to be sure. I also tested my code below but without any result.

Regarding the read operation, I think it’s very clear but can you be more specific about this: OE to low 4. So, I think the shift registers work well and arduino pins too.

If there is any recommandation or correction please don’t hesistate to do it to help me out: So, I decided to make a one for me too. First, try the shift registers stuff to get work.

AM29F040B Datasheet PDF

I would recommend you a step by step approach. Programmers are so expensive. Send out a 16 bit address only and do check you see the address there with a voltmeter for example. When it works then try to read the flash. Q0 – Q7 are connected to A8 – A What’s the next step now. Try to create the following functions, ie.: Dqtasheet, I’m struggling to understand some sentences in the datasheet, if someone please can help me to find out what these phrases mean: To come to this lack of pins, Shift registers am29f040h be used, therefore, I bought 2 shift registers 74HC and wire them in cascading aj29f040b will give us 16 outputs After that, the big problem has appeared: Thanks for datasjeet reply Pito, Concerning about what you have said, below is the test result that I have made: If the flash is programmed you may try to read first 8 addresses for example when the flash is not programmed, erased, you will read FF.


I have used aam29f040b a couple of months, I have made a different projects using it, such as Car robot, little Game Console with LCD I have read the datasheet but my weakness is the Timing Diagram I’m not an electronic engineer I can’t understand it correctly, which means that I can’t write a functionnal code.

Any other clue or idea will be appreciated.

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WE to low 4. I tried several algorithm from the writing timing Diagram without success. Now, Searching for new project and especially in GameBoy console, I have found that some people have made programmable gameboy cartridge, changing its Rom and replace it with AM29F Flash Memory. Hello, This is my first post in arduino forum, datasehet I’m very glad to use this great device.

CS to low 3. The answer was yes. Erase function still remain for later when write and read are functionnal: