I'm thinking of trying to use an external RAM module with a microcontroller (LPC1788 is the current plan). Said micro supports an 8-bit memory bus (at least in the 144-pin package).
So I'm left with a newbie question: How does one identify the memory bus size of a RAM chip? For instance, this is taken off a Micron 64 Mb SDRAM datasheet:
MT48LC16M4A2 – 4 Meg x 4 x 4 Banks
MT48LC8M8A2 – 2 Meg x 8 x 4 Banks
MT48LC4M16A2 – 1 Meg x 16 x 4 Banks
I'm guessing the first number is the number of memory elements (addresses) and the second is the bus width. Is that correct? (so "2 Meg x 8" is what I'd want if I'm looking for an 8-bit bus)
I don't want to get the wrong part and have to wait another ~week to get the right one