CONTROL CIRCUIT OF SEMICONDUCTOR MEMORY, MEMORY SYSTEM AND CONTROL SYSTEM OF SEMICONDUCTOR MEMORY

摘要

A control circuit of a semiconductor memory controls the semiconductor memory and configures a memory system with the semiconductor memory. The memory system is supplied with power from a power supply. The memory system transits between a first state and a second state in which a load current of the memory system is different from each other. The control circuit is configured to receive a terminal voltage of the power supply as a first terminal voltage when the memory system is in the first state. The control circuit is configured to receive a terminal voltage of the power supply as a second terminal voltage when the memory system is in the second state. The control circuit is configured to judge whether a difference between the first terminal voltage and the second terminal voltage is larger than a certain value.

主权项

1. A control circuit of a semiconductor memory that controls the semiconductor memory and that configures a memory system with the semiconductor memory, wherein
the memory system is supplied with power from a power supply, and transits between a first state and a second state in which a load current of the memory system is different from each other, and the control circuit is configured to receive a terminal voltage of the power supply as a first terminal voltage when the memory system is in the first state, receive a terminal voltage of the power supply as a second terminal voltage when the memory system is in the second state, and judge whether a difference between the first terminal voltage and the second terminal voltage is larger than a certain value.