Patent ID: 6519172
Filing Date: 2003-02-11
Classification: G11C,H05K

Abstract:
In a memory module having a substrate with a plurality of terminals, a plurality of volatile memory devices and a non-volatile memory device, the non-volatile memory device having first and second ports, the first port for receiving a signal enabling the non-volatile memory device to receive data for storing, the second port for receiving the data to be stored, a method of storing module information identifying the type and size of the memory module in the non-volatile memory device, comprising the steps of:(a) assembling the memory module by mounting the volatile memory devices and the non-volatile memory device on the substrate and electrically connecting corresponding terminals to the volatile memory devices; (b) electrically connecting the first port of the non-volatile memory device to a first of the terminals, the first terminal receiving a voltage enabling the non-volatile memory device to store data; (c) applying module information data to the second port of the non-volatile memory device; (d) applying address signals to the second port, which address signals indicate corresponding memory locations for storing the module information data, wherein the address signals and module information are applied serially to the second port; and (e) electrically disconnecting the first port of the non-volatile memory device from the first terminal.