Semiconductor memory device and data transmission method
AssigneeNEC Corporation
InventorKouki Yamamoto
Life of this patent
Estimating the term…
Abstract
The present invention provides a semiconductor memory device having a dynamic random access memory and a static random access memory for transmissions of data between the dynamic random access memory and the static random access memory, wherein there are provided a plurality of dynamic random access memory arrays, each of which comprises a pair of a dynamic random access memory cell array and a sense amplifier for data read/write operation to the dynamic random access memory cell array, and there is provided at least a static random access memory array, and the plurality of dynamic random access memory arrays and the at least a static random access memory array are connected through at least a data transmission bus.
Claims10
A semiconductor memory device having a dynamic random access memory and a static random access memory for transmissions of data between said dynamic random access memory and said static random access memory,
- wherein there are provided a plurality of dynamic random access memory arrays, each of which comprises a pair of a dynamic random access memory cell array and a sense amplifier for data read/write operation to said dynamic random access memory cell array, and there is provided at least a static random access memory array, and said plurality of dynamic random access memory arrays and said at least a static random access memory array are connected through at least a data transmission bus.
A semiconductor memory device having a dynamic random access memory and a static random access memory for transmissions of data between said dynamic random access memory and said static random access memory,
- wherein there are provided a plurality of dynamic random access memory arrays, each of which comprises a pair of a dynamic random access memory cell array and a sense amplifier for data read/write operation to said dynamic random access memory cell array, and there is Provided at least a static random access memory array, and said plurality of dynamic random access memory arrays and said at least a static random access memory array are connected through at least a data transmission bus,
- wherein said static random access memory is connected with at least bit lines for reading data out from said static random access memory cells and a data transmission line for transmission of data in said static random access memory cells to said dynamic random access memory, and said data transmission line is further connected to said data transmission bus.
A data transmission method for a semiconductor memory device having a first type random access memory and a second type random access memory for transmissions of data between said first type random access memory and said second type random access memory through a data transmission bus,
- wherein changes in said first type random access memory are transmitted onto said data transmission bus before those charges as charged in said data transmission bus onto bit lines of said second type random access memory in order to transmit data from said first type random access memory to said second type random access memory,
- wherein charges in said first type random access memory are transmitted onto said data transmission bus before a disconnection is then made between said first type random access memory and said data transmission bus.
Dependencies are inferred from the claim text.