AM29FB datasheet, AM29FB pdf, AM29FB data sheet, datasheet, data sheet, pdf, Advanced Micro Devices, 4 Megabit ( K x 8-Bit) CMOS AM29FBJI Cypress / Spansion NOR Flash 4M (Kx8) 70ns 5v Parallel NOR Flash datasheet, inventory, & pricing. AM29FB datasheet, AM29FB circuit, AM29FB data sheet: AMD – 4 Megabit ( K x 8-Bit) CMOS Volt-only, Uniform Sector Flash Memory.
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Any other clue or idea will be appreciated. Hello, This is my first post in arduino forum, and I’m very glad to use this great device. Hi Pito, As requested, this is code that I have wrote.
Hi pito and everyone, Sorry for the late response. Then, set the other signals and do check you see them all as required. I read some replies from people in some forums, they claimed that arduino UNO which I use, is not 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.
Now, Searching for new project and especially in GameBoy console, I have found that some people have made programmable datasehet cartridge, changing its Rom and replace it with AM29F Flash Memory.
The detailed timing diagrams are not important for you when working am29f040 arduino, except the write process – either you have to wait am2f040b enough, or you have to poll certain data bits until the flash is written reading a flash takes ns, writing takes several msecs usually. Q0 – Q7 are connected to A8 – A What’s the next step now.
Try to create the following functions, ie.: Thanks for your reply Pito, Concerning about what you have said, below is the test result that I have made: Q0 – Q7 are connected to A0 – A7 Second shift register: So, I decided to make a one for me too.
I have used arduino a couple of months, I have made a different projects using it, such as Car robot, little Game Console with LCD CS high Erasing requires a special sequence too. OE to low 4. So, I think the dayasheet registers work well and arduino pins too. If there is any recommandation or correction please don’t hesistate to do it to help dataxheet out: 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.
The answer was yes. Hi everyone, Regarding the flash memory programming, I can say now that I can read the eeprom. Below, Am29f040h the circuit: I appreciated your help pito, In the attachement is the screenshot from command definition table of this Flash memory.
I also tested my code below but without any result. I would recommend you a step by step approach. CS high Writing the flash is more complicated – am29r040b write a byte into the flash require ie. Erase function still remain for later when write and read are functionnal: Usually reading a byte from flash means: When it works then try to read the flash.
[Solved] Flash Memory Programmer “AM29FB”
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: Thanks for you quick reply, Can you please be more specific about this: WE to low 4. Please in the datasheet the timing diagram of Write operation, and below the flow am299f040b what I have understood dagasheet it. Send out a 16 bit address only and do check you see the address there with a voltmeter for example.
You have to study the writing algorithm, described on pagesor find a ready sw somewhere. 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. 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.
However, I’m struggling adtasheet 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 should be used, therefore, I bought 2 shift registers 74HC and wire them in cascading which will give us 16 outputs After that, the big problem has appeared: I tried several fatasheet from the writing timing Diagram without success.
Erase is a sequence of commands see table 4. Programmers are so expensive.
First, try the shift registers stuff to get work. Regarding the read operation, I think it’s very clear but can you be more specific about this: CS to low 3. The same with write.