Sorry if this is a stupid question, I'm a newbie just getting into the actual hardware side of things.
Obviously I'm starting small, just a simple re-balling of a BGA chip to build my own Single Board Computer and wanted to know how to do all of that. Anyway, I'm wondering if it's possible to put two NAND flash memory chips onto the same circuit to double the memory (i.e. 8GB chip + 8GB chip = 16GB chip). Tried Google, but it's bloated with millions of useless blogs that bury any useful information.
Something like this (except obviously all connections are connected):
If not, what would theoretically happen? My guess is it would write the same data to both chips (which may prove useful), but I really don't know.
Thanks in advance 🙂
Best Answer
That's what the "chip enable" (CEn) signals are for.
These are active-low (that's what the trailing n means, may also be rendered as a bar over the name in diagrams). You wire all the pins of two chips together except the chip enables, and then wire the CE signals to an address decoder of some sort.