ECLEPROM EQUIPPED WITH CMOS WRITE

摘要

PURPOSE: To make writing easy and to shorten an access time by separating a writing path from a reading path. CONSTITUTION: Two parallel paths are provided for a memory cell 26, and the memory cell 26 can receive a reading signal and a writing signal independently. ECL parts are used for reading a cell in a reading path, on the other hand MOS parts are used for reading and verifying a cell in a writing path. The memory cell 26 includes a MOS memory element, a ECL path element, and a sense element coupling the MOS memory element to the ECL path element. This MOS memory element is coupled to the writing path, the, ECL path element is coupled to a reading path provided with a bipolar output transistor. Thereby, a shortened access time of 4-5ns can be obtained.