Semiconductor memory device with write protected memory banks

Details Semiconductor memory device with write protected memory banks Semiconductor memory device with write protected memory banks

2005-01-21

2008-12-16

Thai, Tuan V. (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S100000, C711S104000, C711S154000

Reexamination Certificate

active

07467254

ABSTRACT:
The invention provides a semiconductor memory device that includes at least two memory banks. The semiconductor memory device is designed in such a way that: at least two processor units can carry out read accesses and write accesses to memory banks; and by means of an inhibit command communicated by one of the processor units, the write access by the processor unit which has communicated the inhibit command and/or by at least one of the other processor units to the inhibited memory bank is prevented at least occasionally. A circuit arrangement including the above semiconductor memory device is furthermore proposed.

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“Technology Behind 512 MB DDR SDRAM”. Golden Emperor International. Jul. 2002. pp. 1-3. http://web.archive.org/web/20020723175616/http://www.geilusa.com/company.asp.

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