The ETL9444/L9445 and ETL9344/L9345 SingleChip N-Channel Microcontrollers are fully compatible with the COPS family, fabricated using N-channel, silicon gate XMOS technology. They are complete microcomputers containing all system timing, internal logic, ROM, RAM and I/O necessary to implement dedicated control functions in a variety of applications. Features include single supply operation, a variety of output configuration options, with an instruction set, internal architecture and I/O scheme designed to facilitate keyboard input, display output and BCD data manipulation. The ETL9445 is identical to the ETL9444, except with 19 I/O lines instead of 23 : They are an appropriate choice for use in numerous human interface control environments. Standard test procedures and reliable high-density fabrication techniques provide the medium to large volume customers with a customiMay 1989