Questions tagged [nand-flash]
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74 questions
2 votes
0 answers
103 views
eMMC end of life estimation
I have an application which needs to write 40 bytes of data per second onto eMMC for approx 15 years. eMMC is from Micron with 4GB capacity and has been pseudo SLC enabled resulting in 2GB size. How ...
- 21
0 votes
0 answers
122 views
SPI Quad IO / Single IO Compatibility
I am working on a circuit board project which requires a large amount of memory. I am looking to use a NAND FLASH chip, since I am very familiar with SPI, and very unfamiliar with eMMC, especially ...
- 66
9 votes
2 answers
3k views
Does unused flash memory degrade faster?
I've seen two different pendrives go bad in the exact same way: they were written up to 30-40% of their capacity, producing no RW errors in that part. I was using both pendrives each few weeks/months ...
- 515
2 votes
2 answers
178 views
How can I take advantage of the way that a Flash memory chip actually works? [closed]
What kind of FLASH memory lets me to separate the ERASE and WRITE operations, and lets me directly address memory cells without some controller abstracting away that possibility from me? For ...
- 63
3 votes
1 answer
129 views
Programming every other group of two NAND pages Results in Longer Programming Time and Noisy Verification Reads
I'm trying to upgrade the storage in a consumer device by swapping in a larger NAND chip (specifically a Micron MT29F128G08CFABBWP). After modifying the firmware to accept the chip's ID and geometry, ...
- 151
0 votes
0 answers
78 views
3D NAND Flash id using FTDI
I am trying to get Micron 3D NAND flash id using FTDI 2232H board but unable to detect using pyftdi library.Although i am detecting ftdi url like: Available interfaces: ftdi://ftdi:4232:0:1/1 (Quad ...
2 votes
0 answers
102 views
Does erasing a flash sector that is already erased cause wear?
Does erasing a NOR flash sector cause any wear if it is already erased (and no data has been programmed into it)? I.e. does an erase count as a program/erase cycle? Some data sheets refer to max ...
1 vote
0 answers
306 views
How does MMC compare to SD in terms of life expectancy?
There is supposedly new surface mount SD card ICs on the market (see https://hackaday.com/2020/12/29/new-part-day-sd-nand-are-surface-mount-chips-that-work-like-an-sd-card/) which I thought was ...
