US 10,121,524 B1 · Semiconductor devices

Abstract

A semiconductor device includes a command input circuit and an internal command generation circuit. The command input circuit is synchronized with a clock signal to generate an input command which is enabled if an external command is inputted to the command input circuit. The internal command generation circuit delays the input command by a predetermined period according to a latency information signal to generate an internal command, in synchronization with a first division clock signal and a second division clock signal generated by division of a frequency of the clock signal. The predetermined period is set to be equal to a sum of a first delay amount corresponding to “N” times a cycle time of the second division clock signal and a second delay amount corresponding to “M” times a cycle time of the clock signal.

Claims25

Dependent claims

A semiconductor device comprising:

a command input circuit configured to be synchronized with a clock signal to generate an input command which is enabled if an external command is inputted to the command input circuit;
and
an internal command generation circuit configured to delay the input command by a predetermined period according to a latency information signal to generate an internal command, in synchronization with a first division clock signal and a second division clock signal generated by division of a frequency of the clock signal,
wherein the predetermined period is set to be equal to a sum of a first delay amount corresponding to “N” times a cycle time of the second division clock signal and a second delay amount corresponding to “M” times a cycle time of the clock signal.

1 more element

Dependencies are inferred from the claim text.

Semiconductor devices

Life of this patent

Semiconductor devices

Life of this patent

Abstract

Claims25