CIRCUIT HAVING LOW-VOLTAGE DETECTION CIRCUIT FOR PREVENTING UNINTENTIONAL WRITING OPERATION TO MEMORY AND SEMICONDUCTOR DEVICE HAVING THE SAME

摘要

PURPOSE: A circuit having a low-voltage detection circuit for preventing an unintentional writing operation to a memory and a semiconductor device having the same are provided to prevent the unintentional writing operation to a memory due to a malfunction of a mode control register by preventing the unintentional writing operation according to a control signal. CONSTITUTION: A circuit having a low-voltage detection circuit for preventing an unintentional writing operation to a memory includes a low-voltage detection circuit(1). The low-voltage detection circuit detects a drop of a supply voltage and is turned on and off by a control signal from a control terminal. The circuit having the low-voltage detection circuit is used for preventing the unintentional writing operation to the memory according to the control signal.