INTEGRATED CIRCUIT MEMORY DEVICE
First Claim
1. A semiconductor memory device comprising:
- a plurality of memory regions formed on one chip, each of the memory regions having a plurality of volatile memory cells that are formed as a density of 2̂
K bits, where K is an integer greater than or equal to 0, and a plurality of input/output (I/O) terminals for inputting and outputting data of the volatile memory cells, an entire density of the memory regions corresponding to an interim density; and
at least one peripheral region configured to control a write operation for writing data into the memory regions and a read operation for reading data from the memory regions based on an externally input command and address.
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Accused Products
Abstract
A semiconductor memory device includes a plurality of memory regions formed on one chip, each of the memory regions having a plurality of volatile memory cells that are formed with a density or capacity of 2̂K bits, where K is an integer greater than or equal to 0, and a plurality of input/output (I/O) terminals for inputting and outputting data of the volatile memory cells, and at least one peripheral region that controls a write operation for writing data into the memory regions and a read operation for reading data from the memory regions based on a command and an address input from outside. Thus, a total or entire density of the memory regions corresponds to a non-standard (or ‘interim’) density so that the semiconductor memory device may have an interim density.
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Citations
20 Claims
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1. A semiconductor memory device comprising:
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a plurality of memory regions formed on one chip, each of the memory regions having a plurality of volatile memory cells that are formed as a density of 2̂
K bits, where K is an integer greater than or equal to 0, and a plurality of input/output (I/O) terminals for inputting and outputting data of the volatile memory cells, an entire density of the memory regions corresponding to an interim density; andat least one peripheral region configured to control a write operation for writing data into the memory regions and a read operation for reading data from the memory regions based on an externally input command and address. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An integrated circuit memory device, comprising:
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a plurality of memory regions on a same memory chip, each of the memory regions having a respective memory capacity defined in units of bits, wherein a sum of the respective memory capacities of the memory regions on the same memory chip cannot be expressed as a power of 2; and at least one peripheral region configured to control read or write operations for the plurality of memory regions responsive to address and command signals received from an external memory controller. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An integrated circuit memory device, comprising:
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a plurality of memory regions on a same memory chip, the plurality of memory regions comprising a first memory region comprising a plurality of first volatile memory cells having a first memory capacity of 2M bits, where M is an integer greater than or equal to zero, and a plurality of first input/output terminals coupled to the memory cells, and a second memory region comprising a plurality of second volatile memory cells having a second memory capacity of 2N bits, where N is an integer greater than or equal to zero and N does not equal M, and a plurality of second input/output terminals coupled to the memory cells, wherein a sum of the first memory capacity and the second memory capacity cannot be expressed as a power of 2; an I/O connecting block configured to connect the first and/or second input/output terminals to chip input/output terminals of the same memory chip, wherein the I/O connecting block is configured to simultaneously connect the first and second input/output terminals to the chip input/output terminals or is configured to selectively connect either the first input/output terminals or the second input/output terminals to the chip input/output terminals responsive to at least one chip select signal; and at least one peripheral region configured to control read or write operations for the plurality of memory regions responsive to address and command signals received from an external memory controller.
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Specification