±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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(PDF) C8051F340 Datasheet download

Is there any way? See datasheet of your microcontroller about their size. 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. You should pick an address toward the top of your flash memory, like 0xF I use the example functions from the AP for the F Stack Overflow works best with JavaScript enabled.

I have can CF Microcontroller from Silabs. Now as in the data sheet described I save all the data in between the addresses 0x – 0x If I call the function like its designed it doesnt work – if I make a global variable to “pass” the function arguments it works Not sure why your stepping into function call would how the wrong parameter.

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. Actually you satasheet me a lot in making progress – I still have some weird problem left.


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Only then you can write to it. Post as a guest Name. To copy my data there I just use memcpy. Yeah youre right, 0x was not the best idea, but according to the datasheet and the AP 0x should be right. Sign up or log in Sign up using Google. Normaly, erasing done by sectors. Yea according to the datasheet I need to unlock it there is a procedure described there but how do I pick a destination?

Re your question re the MOVX instruction, the app note says: However I question your use of 0x for a Flash address to use for data, that would normally be right in the middle of where your code is placed, unless you have modified your linker script.

Acording to datasheet of your CPU, to write you have to use special instruction.

Maximum that you can – read from it as from normal memory only if you have NOR flash. Sign up using Facebook. Based on the code you displayed in your question, you are trying to write datashfet external data xdatawhich is RAM, not non-volatile flash memory. It compiles without problems, but like i already said, it has problems with passing the function parameters Email Required, but never shown. I mean isnt the flash data non volatile or c8051v340 I get something wrong?


Down there I tried to implement the example for the F into my code.

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. But if you want to write to it, you have to the first of all erase it set all bits to 1.


By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Toby 1, 10 36 Sign up using Email and Password. I don’t know why that is???

You can not just write to it. Okay that link to the application note from silabs helped.

I wrote a little Interface which stores Information in the non-volatile flash memory from the uC. I mean there can only be one address 0x?! But if I leave it disconnected any longer my data gets more or less “resetted” – that means datasbeet gets everytime almost the same “reset values”.

They called erase sectors.

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