Or hook up a counter (reset + clock signal, that's 2 gpio's), and feed counter output to address lines. If you're really short on gpio's, you could do the same

Or hook up a counter (reset + clock signal, that's 2 gpio's), and feed counter output to address lines. If you're really short on gpio's, you could do the same with the data outputs (use some parallel in, serial out shift register, or a multiplexer that selects which data bit(s) to read).