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Are There Any Issues using a 16-bit Flash When using 16-bit Flash devices, watch out for differences in terminology used between various Flash suppliers. In a 16-bit wide memory subsystem, the A7S internally shifts the address presented to the memory interface. The A7S’s A0 address line must connect to the half-word address input on the Flash device. On some Flash devices, the half-word address input is labeled A0, with a separate input labeled D15/A-1 for byte addressing. Other vendors label their half-word address input as A1 and the byte address input as A0. For example, the diagram below shows how to connect the A7S device to an Intel StrataFlash or an AMD Am29F800B Flash. Tie the Flash BYTE# input to select 16-bit or byte-wide mode.
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