Electronic circuit for an answering machine not started when the input voltage is triggered

摘要

The circuit has an extractor (12) to extract a clock signal (CL1), and coupled to a connecting pad (P1) and a logic circuit (8) associated with a memory (10). Another extractor (14) for extracting clock signal (CL2) is coupled to another connecting pad (P2) and a generator (20) for a signal reset (SR) of the logic circuit connected between the extractors. The generator provides the reset signal to the logic circuit when difference between number of pulses of the former clock signal and number of pulses of the other clock signal is equal to or greater than a predefined positive integer.