Semiconductor device and operating method thereof

摘要

A semiconductor memory device includes a plurality of memory cell blocks each including a plurality of word lines and suitable for being selectively activated based on an active command and a row address, wherein word lines are selected from the respective activated memory cell blocks based on the active command and the row address, and a column decoding block sequentially accessing the activated memory cell blocks to input/output data thereof by decoding a column address based on the row address.

主权项

1. A semiconductor memory device comprising:
a plurality of memory cell blocks each including a plurality of word lines and suitable for being selectively activated based on an active command and a row address, wherein word lines are selected from the respective activated memory cell blocks based on the active command and the row address; and a column decoding block suitable for sequentially accessing the activated memory cell blocks to input/output data thereof, by decoding a column address and the row address, wherein the column decoding block comprises:
a column decoding unit suitable for generating column selection signals based on the column address; anda sub-column selection unit suitable for generating sub-column selection signals based on the column selection signals and the row address to sequentially access the activated memory cell blocks.