This manual introduces the functions and operating methods of µPD78F9210/11/12 78K0S/KY1+ 8-bit single-chip microcontrollers.
This manual provides detailed information for engineers designing with the NEC 78KOS/KY1+ 8‑bit single‑chip microcontrollers. It covers pin functions, CPU operation, internal peripherals, instruction set, interrupts, and registers, as well as guidelines for power sequencing and handling of unused pins.
Additional sections describe electrical specifications, ESD precautions, recommended power‑on/off sequences, and references to related development tools and flash‑memory programming documents. Contact information for NEC Electronics worldwide is provided at the end of the document.