Byte write access is used to connect 2 × 8-bit devices as a 16-bit memory, and supports one write signal per byte of the data bus and a single read signal.
Note that the SMC does not allow boot in Byte write access mode.
For 16-bit devices, the SMC provides NWR0 and NWR1 write signals for respectively Byte0 (lower byte) and Byte1 (upper byte) of a 16-bit bus. One single read signal (NRD) is provided.