I'm researching designing a custom PCB for a data logging project, and I need to include some kind of non-volatile storage. I really only need a couple megabytes of storage, so SD is probably overkill, but I presume that would be the cheapest option.
I see most of the micro-sd breakout boards have a chip on them, which I believe is a hex inverter. Why is that needed, and can a micro-SD slot pretty much be wired directly to the MCU, or is additional supporting components needed? Can anyone direct me to information on using an SD card without a breakout board?
As a separate question, is there some other option (very inexpensive) I can go with for up to a couple MB of non-volatile storage instead of SD? Speed is not a concern, and neither is the ability to remove the device, however very low cost would be preferable. So even a surface mount flash chip or something would be perfectly fine. Any recommendations?
Thanks!
I'm researching designing a custom PCB for a data logging project, and I need to include some kind of non-volatile storage. I really only need a couple megabytes of storage, so SD is probably overkill, but I presume that would be the cheapest option.
I see most of the micro-sd breakout boards have a chip on them, which I believe is a hex inverter. Why is that needed, and can a micro-SD slot pretty much be wired directly to the MCU, or is additional supporting components needed? Can anyone direct me to information on using an SD card without a breakout board?
As a separate question, is there some other option (very inexpensive) I can go with for up to a couple MB of non-volatile storage instead of SD? Speed is not a concern, and neither is the ability to remove the device, however very low cost would be preferable. So even a surface mount flash chip or something would be perfectly fine. Any recommendations?
Thanks!