Dan Barlow's Webpage

This project builds on the Memory Expansion 32K Shield. Please see that description for the background explanation.

This shield implements 65535 bytes of Static Random Access Memory mapped into the full address space.

Use of the 8703 bytes of internal SRAM will not produce external activity, so the actual increase is 56832 bytes.

Since 64K SRAMs are not commercially viable, the shield is implemented with two 32K SRAM chips.

The latch and inverter are changed to surface mount parts, but the SRAM footprints are kept as through hole so you can use up all those older parts you've been saving.

Arduino sketches can use the extra memory with minor additional code.

An example sketch is provided that shows how to use and test the memory.