DETECTION DEVICE OF COUNTING FINISH OF NONVOLATILE MEMORY

摘要

PURPOSE: To obtain a count end-detecting apparatus for nonvolatile memory of the simplified structure. CONSTITUTION: A count end detecting apparatus 1 for nonvolatile memory is provided with a decoder 2 of the wired OR structure consisting of many transistors 3 of the same type and the gate terminal of transistor receives a count signal having the predetermined count end value which is generated and detected by an counter element 6. A static, an artificial dynamic or dynamic load 7 is applied across the common node of the transistor 3 of the decoder and the reference potential. line VDD. An output 4 of the decoder formed by the common node takes different logic levels depending on the condition whether the count end value encoded by the wired OR structure reaches or not. Many wired OR structures are arranged in parallel by means of the arrangement of the transistors to detect many count end values of the same counter element.