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The MSP430 is a fun way to get back to that sort of simplicity with a fairly modern chip; it's a 16-bit processor with a focus on power efficiency. They've got

The MSP430 is a fun way to get back to that sort of simplicity with a fairly modern chip; it's a 16-bit processor with a focus on power efficiency. They've got a GCC toolchain and a port of the Processing IDE ('Arduino') called Energia: https://energia.nu/ https://energia.nu/ Also, some of the newer ones have small amounts of nonvolatile FRAM instead of separate SRAM and Flash banks.

Koshkin 7y ago
... and it is a lot more fun when the toolchain runs on the target itself. With microcontrollers it's hardly possible (but see RetroBSD), but not needing a workstation to service an otherwise self-contained little machine somehow feels special.