H8 family MCUs were commonly used with 8-, 16-, and 32-bit variations. Originally created in the early 1990s by Hitachi, new designs were still being created by Renesas Technology until a few years ago, though the latter recommends new designs use the RX (32-bit) or RL78 (16-bit) families. A notable use of an H8 MCU is in the Lego Mindstorms RCX controller, which uses an H8/300 MCU.