This document describes the ETC9410, ETC9411, ETC9310, and ETC9311 CMOS microcontrollers. It covers their architecture, instruction set, memory organization, and I/O capabilities, highlighting the low power dissipation and single‑supply operation.
Key sections include electrical characteristics, pin assignments, functional description, program and data memory details, option settings, and physical dimensions for both the 24‑pin and 20‑pin plastic packages.