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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There is no single byte erase. Do you see a response from the device on an oscilloscope? Sign up or log in Sign up using Google. The response is wrong. Is the response I have obtained is it right? Abhay 30 2 8. When I remove sector erasing at the start of this example code, software stops writing to SPI. We have detected your current browser version is not the datasheeh one.
ST Microelectronics – datasheet pdf
Does your SPI code work datashewt any other devices? This Wikipedia page explains flash memory fairly well.
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Is this a new piece of SPI code? You are sometimes better first of all trying to read the device ID rather than the status register for a new piece of code. ChromeFirefoxInternet Explorer 11Safari. Is there any way to erase only some of them or overwrite them? Is there any solution?
But this example code does not work without erasing first. Post as a guest Name.
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Things to check since you have not provided any information:. Does the MSP read that value or a different one? I can use Impact to write and read the code successfully, it works great.
Did you remember to send a dummy byte after the RDSR command so that the device would send the status register value? As Austin said, “flash” is not byte erasable, although if already erased, it is byte writable for “NOR” flash. 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?
I store configuration data on the SPI, I cannot erase all the data inside the whole sector. The reason for that is the device ID will datashee change, whereas the status register might change although that depends on the device.
Please upgrade to a Xilinx. So, without being able to erase, a write is not very useful. I’m using ISE I mean, it seems like to write anything to SPI, I need to start sector erase first, which I don’t want.