Memory devices and methods for decoding addresses thereof

A method of decoding an address of a memory device, the method comprising:

• gating power of a plurality of decoding blocks included in a row decoder of the memory device;
• decoding a row address to generate a decoded row address during receiving an active request;
• generating an active block flag based on the decoded row address;
• releasing gating power of a first decoding block of the plurality of decoding blocks based on the active block flag, the first decoding block corresponding to a selected memory cell group;
• and
• selecting a wordline of a plurality of wordlines connected to the selected memory cell group based on the decoded row address.

A memory device comprising:

• a memory cell array including a plurality of memory cell groups;
• an intermediate block configured to decode a row address and output an active block flag and a decoded row address;
• and
• a row decoder including a plurality of decoding blocks, each connected to a respective memory cell group from the plurality of memory cell groups,
• wherein the row decoder is configured to:
• release gating power of a selected decoding block of the plurality of decoding blocks based on the active block flag and reception of an active request;
• maintain gating power of the decoding blocks of the plurality of decoding blocks other than the selected decoding block;
• and
• select a wordline corresponding to the decoded row address among wordlines connected to the selected decoding block.