View M25P64 datasheet from Micron Technology Inc. at Digikey. M25PVME6TG TR Micron Technology Inc. | M25PVME6TGCT-ND Digi- Key Part Number, M25PVME6TGCT-ND HTML Datasheet, M25P M25P64 64Mbit, Low Voltage, Serial Flash Memory With 50 MHz SPI Bus Interface 64Mbit of Flash Memory Page Program (up to Bytes) in ms ( typical).
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I can use Impact to write and read the code successfully, m2564 works great. I store configuration data on the SPI, I cannot erase all the data inside the whole sector. Is there any solution?
Solved: M25P64 SPI Write Problem – Community Forums
Is the response I have obtained is it right? Sign up datashert Facebook. Things to check since you have not provided any information:.
As Austin said, “flash” is not byte erasable, although if already erased, it is byte writable for “NOR”.
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So, without being able to erase, a write is not very useful. We have detected your current browser version is not the latest one.
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When I remove sector erasing at the start of this example code, software stops writing to SPI. All forum topics Previous Topic Next Topic. The response is wrong. Is this a new piece of SPI code?
If so have you checked with an oscilloscope to see what you send out clock and MOSI is what you expect and matches what the datasheet says the device expects? Post as a guest Name. Does your SPI code work with any other devices?
The reason for that is the device ID will never change, whereas the status register might change although that depends on the device. Did you remember to send a dummy byte after the RDSR command so that the device would send the status adtasheet value? I did require that before you write new data, you need to erase the old data once programmed, it can not be made eatasheet to a ‘1’: Non-volatile memory that is byte erasable. Please upgrade to a Xilinx. Did you datashewt to assert the chip select line?
So my question dqtasheet “Is the response I have obtained is dwtasheet right? Does the M256p4 read that value or a different one? Stack Overflow works best with M2p564 enabled. Sign up or log in Sign up using Google. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Abhay 30 2 8. But this example code does not work without erasing first. I mean, it seems like to write anything to SPI, I need to start sector erase first, which I don’t want.
ChromeFirefoxInternet Explorer 11Safari. There is no single byte erase. I read the datasheet as well, but I couldnt find a solution for automatic erasing only the data I overwrite. Have you got the SPI module configured correctly for phase and polarity? This Wikipedia page explains flash memory fairly well. I’m using ISE It’s the definitive way to be sure. As Austin said, “flash” is not byte erasable, although if already erased, it is byte writable for “NOR” flash.