Patent ID: 7339850

Claim:
A semiconductor memory device comprising: a plurality of memory blocks, arranged corresponding to one data bit, each including first and second subarrays each including a plurality of static memory cells arranged in rows and columns and a plurality of bit line pairs, arranged corresponding to respective memory cell columns, each being connected with the memory cells of a corresponding column; first and second data line pairs arranged, for each of the memory blocks, corresponding to the first and second subarrays, respectively; a first column selection circuit arranged, for each of said memory blocks, corresponding to said first subarray for coupling a bit line pair of a selected column of said first subarray to said first data line pair according to a received column selection signal; a second column selection circuit arranged, for each of said memory blocks, corresponding to said second subarray for coupling a bit line pair of a selected column of said second subarray to said second data line pair according to a received column selection signal; a data line selection circuit arranged, for each of said memory blocks, in a column circuit region arranged between and in alignment with the first and second subarrays for selecting one of said first and second data line pairs according to at least a subarray selection signal selecting subarray; a sense read circuit arranged, for each of said memory blocks, in a said column circuit region for amplifying data applied via said data line selection circuit when activated; an internal write circuit arranged, for each of said memory blocks, in said column circuit region between the first and second subarrays for transmitting internal write data to a data line pair selected by said data line selection circuit; and a global data bus arranged in common to said plurality of memory blocks and coupled in common to the sense read circuit and the internal write circuit of each of said memory blocks, for transferring internal data including said internal write data.