Static information storage and retrieval – Hardware for storage elements
Patent
1997-06-12
1999-01-12
Mai, Son
Static information storage and retrieval
Hardware for storage elements
365 51, 36518505, 36518508, G11C 502, G11C 1602
Patent
active
058597921
ABSTRACT:
A memory module is described which can be programmed with module information, identifying the type and size of the memory module, after completed assembly of the memory module. The memory module includes a plurality of edge connectors for electrically connecting the memory module circuitry external to the memory module, and a plurality of DRAM memory devices electrically connected to corresponding edge connectors for receiving and providing data from and to the external circuitry. The memory module also includes a Serial EEPROM for storing the module information. The Serial EEPROM has a Serial Data pin connected to a first of the edge connectors for providing the module information to the external circuitry. The Serial EEPROM has a Write Control pin for receiving an enabling signal which selectively enables the operation of the Serial EEPROM in Write or Read-Only mode. The memory module further includes interface circuitry which couples the Write Control pin with a second and a third of the edge connectors. The Write Control pin is coupled to the second edge connector, where V.sub.ss is applied, by a circuit element, such as a jumper, suitable for temporarily connecting the Write Control pin to the second edge connector. A resistor couples the Write Control pin to the third edge connector where V.sub.cc is applied.
REFERENCES:
patent: 4498151 (1985-02-01), Henry
patent: 5383147 (1995-01-01), Sanemitsu
patent: 5572457 (1996-11-01), Michael
patent: 5661677 (1997-08-01), Rondeau, II et al.
Magee Allan R.
Rondeau, II Thomas C.
Mai Son
Micron Electronics Inc.
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