Signal delay device and method and memory device using the signal delay device

Abstract

The invention relates to a signal delay device, a memory device using the signal delay device and a signal delay method. The signal delay device comprises a period digitalization circuit, a delay control signal generator and a delay circuit, wherein the period digitalization circuit is used for digitalizing the period of a reference clock signal to generate a digitalized reference period; the delay control signal generator is used for generating a delay control signal according to the digitalized reference period, reference frequency and a required delay indication signal; and the delay circuit is used for delaying an input signal according to the delay control signal to generate an output signal.

Description

technical field [0001] The present invention relates to a signal delay device, a memory device using the signal delay device, and a signal delay method, in particular to a signal delay device capable of providing an exact amount of delay, a memory device using the signal delay device, and a signal delay method. Background technique [0002] figure 1 A prior art memory device 100 is shown. Such as figure 1 As shown, the memory device 100 includes a memory module 101 and a control circuit 103 . The control circuit 103 accesses the memory chips 105-111 through the signal channels 113-119. In the early electronic devices, four-layer circuit boards were used, so there could be sufficient space between each signal channel line, voltage line, and ground potential line, so there would be little mismatch between signal channel lines . However, for the miniaturization and cost reduction of electronic devices nowadays, two-layer boards are usually used, so that the signal channel ...

AI Technical Summary

Problems solved by technology

[0004] However, these techniques have their disadvantages

For example, analog signals have the problem of not being easy to control

Compensating by trial and error is a waste of time and requires a large amount of circuit area.

Images