Nor Flash Forum Discussions
I'm working with flash S25FL256LAGMFI003, SPI single mode, and I'm trying to write 1 to CRV to enable 4 byte address mode.
In the datasheet in page 60 Table 41 the description of the command WRR (0x01) says: Write Register (Status-1 and Configuration- 1,2,3). But I need to write only to Configuration Register 2. How can I do that? Can you tell me the sequence of operations please?
Is there a ready command for this in your general driver slld_v16.2.1.zip ?slld_v16.2.1.zip
i am not able to do full sector erase. It's only erasing 64kb memory not 128 kb memory.
And please also confirm me that my flash has 512 sector and each sector is of size 128 kb and so whole it become 64 mb flashShow Less
I am working with kernel 4.19.2. Is there any patch available for 4.19.2 kernel for S29GL01GS parallel NOR Flash. I got one link on your website for kernel 4.14.0.
Please suggest me how to add support for parallel nor flash in linux kernel.
Raj kishorShow Less
I am trying to interface S25FL128P Nor flash with STM32F412 microcontroller. I am using a FATFS stack on top of FREE-RTOS, but i am facing problems in communicating with the flash itself. After f_init() and f_start() when i call the f_initvolume() function it returns a error. Can anyone help me on this? or provide any sample code that i can use?
Thanks in advance.Show Less
KBA223960 gives a good overview how an erase operation in a Cypress NOR flash is working.
However it is not precise about the effects of the power-loss on OTHER sectors.
Depending on the phase of the erase operation interrupted it seems to be possible that over-erased cells are generated in problematic sector.
If the same bit-lines/columns are used for multiple sectors (which I don't know), this could result in a situation that the read operation in other sectors is affected.
So the first question is: Are bit-lines/columns are actually shared between different sectors (256 kByte)?
If yes, then the second question is whether there is a influence of the over-erased cells in one sector to the other sector is possible?
(and on which sectors - are there sector-groups?)Show Less
I can find MTD driver patch on Linux karnel v4.14.0 as below URL.
Do you have it for Linux Karnel v2.4 or nearest version?
Thank you & Best Regards,Show Less