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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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 Erase function still remain for later when write and read are functionnal: 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 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: OE to low 4.
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Q0 – Q7 are connected to A0 – A7 Second shift register: WE to low 4. Programmers are so expensive. Please in the attachement the timing diagram of Write operation, and below the flow of what I have understood from it.
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. Regarding the read operation, I think it’s very clear but can you be more specific about this: If there is any recommandation or correction please don’t hesistate to do it to help me out: Thanks for your reply Pito, Concerning about what you have said, below is the test result that I have made: What’s the next step now.
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 Eatasheet Memory.
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 datashest that’s possible to do.
The answer was yes. Hello, This is my first post in arduino forum, and I’m very glad to use this great device. CS to low 3.
Erase is a sequence of commands see table 4. Thanks for you quick reply, Can you please be more specific about this: So, I think the shift registers work well and arduino pins too. So, I decided to make a one for me too.
I also tested my code sm29f040b but without any result. First, try the shift registers stuff to get work. Then, set the other signals and do check you see them all as required. I appreciated your help pito, In the attachement is the screenshot from command definition table of this Flash memory.
I tried several algorithm from the writing timing Diagram without success. Hi Pito, As requested, this is code that I have wrote. I would recommend you a step by step approach. Hi pito and everyone, Sorry for the late response.
Below, Is the circuit: CS high Writing the flash is more datazheet – to write a byte into the flash require ie.
[Solved] Flash Memory Programmer “AM29FB”
The detailed timing diagrams are not 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 written reading a flash takes ns, writing takes several msecs usually. Send out a 16 bit address only and do check you see the dayasheet there with a voltmeter for example.
However, I’m struggling to understand some sentences in the datasheet, if someone please can help me to find out what these phrases mean: Hi everyone, Regarding the flash memory programming, I can say now that I can read the eeprom. CS high Erasing requires a special sequence too.