The LatticeMico8 is an 8-bit microcontroller optimized and fully tested for the MachXO2™ family of Programmable Logic Devices (PLDs). ... Block Diagram of the Lattice Mico8 Open, Free Soft ...

My manager studied electrical engineering in Columbia in the early 90’s, and every student had to build an 8-bit TTL CPU. I wish modern American universities provided that depth in their curriculum.