Well with RAM and flash you can either fit everything in on chip memory or you need external memory.
Once you have external memory 64MB is the smallest that you can get and be confident that you can obtain it for the next years. Its also not a big cost factor.
Grisp-Base is a evaluation board to get people easily started with Erlang running directly on hardware so not much use artificially limiting memory here. The board size is also larger than minimal to have all these nice PMOD connectors with enough room for the PMODs around them. Normally one would build some prototypes or smaller applications < 100 boards. When this works its fairly easy and cheap to build a customized board only the parts needed for the actual IoT application.
There are new SoC automotive controllers who will be able to run a Erlang VM without connecting any external memory which we plan to target for the future.
64K flash/16K RAM will never be able to run a Erlang VM so its outside of our scope. IoT trends are to move more calculation towards the edge since the cloud can't grow enough.
Once you have external memory 64MB is the smallest that you can get and be confident that you can obtain it for the next years. Its also not a big cost factor.
Grisp-Base is a evaluation board to get people easily started with Erlang running directly on hardware so not much use artificially limiting memory here. The board size is also larger than minimal to have all these nice PMOD connectors with enough room for the PMODs around them. Normally one would build some prototypes or smaller applications < 100 boards. When this works its fairly easy and cheap to build a customized board only the parts needed for the actual IoT application.
There are new SoC automotive controllers who will be able to run a Erlang VM without connecting any external memory which we plan to target for the future.
64K flash/16K RAM will never be able to run a Erlang VM so its outside of our scope. IoT trends are to move more calculation towards the edge since the cloud can't grow enough.