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BANK - also "memory bank"

A bank of memory (flash or RAM) consists of all those memory chips on your system that are controlled by the same chip select signal.

For example, a system might consist of one flash chip with a 8 bit bus interface, which is attached to the CS0 chip select signal, 2 flash chips with a 16 bit bus interface, which are attached to the CS1 chip select signal, and 2 SDRAM chips with a 16 bit bus interface, which are attached to the CS2 chip select signal.

This setup results in a system with 3 banks of memory:

* 1 bank of flash, 8 bit wide (CS0) * 1 bank of flash, 32 bit wide (CS1) * 1 bank of SDRAM, 32 bit wide (CS2)