±1 LSB INL; no missing codes. – Programmable throughput up to ksps. – Up to 17 external inputs; programmable as single-ended or. CF Datasheet PDF Download – Full Speed USB Flash MCU, CF data sheet. Explore the latest datasheets, compare past datasheet revisions, and confirm part lifecycle. Preview and Download. Download Datasheet CF

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The reason the data disappears after a few seconds, is the power supply capacitor still powers the chip long enough to keep the internal RAM alive.

I mean there can only be one address 0x?! I don’t know why that is??? But if you want to write to it, you have to the first of all erase it set all bits to 1. I mean isnt the flash data non volatile or did I get something wrong?

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Okay that link to the application note from silabs helped. Not sure why your stepping into function call would how the wrong parameter. Stack Overflow works best with JavaScript c8051f430. If I call the function like its designed it doesnt work – if I make a global variable to “pass” the function arguments it works Maximum that you can – read from it as from normal memory only if you have NOR flash. Down there I tried datashdet implement the example for the F into my code.

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Only then you can write to it.

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Actually you helped me a lot in making progress – I still have some weird problem left. I wrote a little Interface which stores Information in the non-volatile flash memory from the uC. Acording to datasheet of your CPU, to write you have to use special instruction.

Re your question re the MOVX instruction, the app note says: I have can CF Microcontroller from Silabs. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Normaly, erasing done by sectors.

However I question your use of 0x for a Flash address to use for darasheet, that would normally be right in the middle of where your code is placed, unless you have modified your linker script. Toby 1, 10 36 Email Required, but never shown.

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Post as a guest Name. You should pick an address toward the top of your flash memory, like 0xF Now as in datashwet data datasjeet described I save all the data in between the addresses 0x – 0x By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. They called erase sectors.

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Is there any way? Well the copying itself works well I looked up at the flash memory and it saved my data right – If I now disconnect my uC and connect it again in like 5 secs, the data is still there.

(PDF) C8051F340 Datasheet download

To write to flash memory, you need to follow a specific protocol to unlock the flash programming circuitry, then erase the area you will be writing to, and then write the bytes using MOVX instructions as described in Section 12 of the datasheet. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

To copy my data there I just use memcpy. You can not just write to it.

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But if I leave it disconnected any longer my darasheet gets more or less “resetted” – that means it gets everytime almost the same “reset values”. Yea according to the datasheet I need to unlock it there is a procedure described there but how do I pick a destination? Based on the code you displayed in your question, you are trying to write to external data xdatawhich is RAM, not non-volatile flash memory.