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±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

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. See datasheet of your microcontroller about their size.

Yeah youre right, 0x was not the best idea, but according to the datasheet and the AP 0x should be right. Stack Overflow works best with JavaScript enabled.

CFGQ – Silicon Labs – PCB Footprint & Symbol Download

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. I mean isnt the flash data non volatile or did I get something wrong? 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.

Sign up using C80513f40. I use the example functions from the AP for the F Actually you helped me a lot in making progress – I still have some weird problem left. Is there any way? I have can CF Microcontroller from Silabs. 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.


Not sure why your stepping into function call would how the wrong parameter. To copy my data there I just use memcpy. But daasheet you want to write to it, you have to the first of all erase it set all bits to 1. Maximum that you can – read from it as from normal memory only if you have NOR flash. Post as a guest Name. You can not just write to it.

Based on the code you displayed in your question, you are trying to write to dataaheet data xdatawhich is RAM, not non-volatile flash memory. But if I leave it disconnected any longer my data gets more or less “resetted” – that means it gets everytime almost the same “reset values”.

I wrote a little Interface which stores Information in the non-volatile flash memory from the uC.

cf datasheet & applicatoin notes – Datasheet Archive

Normaly, erasing done by sectors. Sign up using Email and Password. I don’t know why that is??? If I call the function like its designed it doesnt work – if I make a global variable to “pass” the function arguments it works Email Required, but c8051ff340 shown. Okay that link to the application note from silabs helped. Toby 1, 10 36 They called erase sectors.

Only then you can write datasgeet it. Re your question re the MOVX instruction, the app note says: By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Now as in the data sheet described I save all the data in between the addresses 0x – 0x I mean there can only be one address 0x?!


It compiles without problems, but like i already said, it has problems with passing the function parameters By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and dstasheet policyand that your daatsheet use of the website is subject to these policies. Make sure that memcpy internally use it. Acording to datasheet of your CPU, to write you have to use special instruction.

Sign up or log in Sign up using Google. 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 ratasheet top of c8051f3440 flash memory, like 0xF Yea according to the datasheet I need to unlock it there is a procedure described there but how do I pick a destination? Down there I tried to implement the example for the F into my code.