Device and method for controlling internal switch module by testing working volt of memory

Abstract

The invention provides a device for controlling a switch module in a memory, which comprises a first impulse width adjusting unit, a decoder, a second impulse width adjusting unit and a detector. The first impulse width adjusting unit receives input demand signals and selectively adjusts the impulse width of the input demand signals according to the adjustable load of the first impulse width to generate adjusted input demand signals; the decoder receives input address signals and the adjusted input demand signals to produce control signals to control a switch module for data access; the second impulse width adjusting unit receives control signals and selectively adjusts the impulse width of the control signals according to the adjustable load of the second impulse width to control the switch module; the detector detects the electrical features of the input signals in the memory to control the first impulse width adjusting unit and the second impulse width adjusting unit to configure the adjustable loads of the first impulse width and the second impulse width.

Description

technical field [0001] The present invention is to provide a memory access control mechanism, especially a device for adjusting the pulse width by detecting the working voltage of the memory to generate a control signal of the switch module on the data transmission path in the memory and its related method. Background technique [0002] Generally speaking, when the microprocessor wants to access a certain data in a memory (such as dynamic random access memory (DRAM)), it needs to send an input command signal (such as a data read command or a data write command ) to the memory to inform the memory to perform data access operations, and also need to send an input address signal corresponding to the data so that the memory can access the data according to the input address signal, and before accessing the data, The input address signal and the input command signal will firstly be decoded by a decoder to output a control signal to control the turn-on time of the switch module, s...

AI Technical Summary

Problems solved by technology

[0003] In terms of implementation, when the operating voltage of the memory is operated at a higher level, the pulse width of the input command signal will be shortened accordingly, and the on-time of the switch module will be reduced at this time, which will affect the data access time of the memory; Conversely, when the operating voltage of the memory is operated at a lower level, the pulse width of the input command signal will be extended accordingly, which may affect the erroneous operation of the decoder corresponding to the switch module in the memory.

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