Semiconductor memory device and operating method of the semiconductor memory device

A memory system, comprising:

• a memory device including a plurality of memory blocks including first to m-th guarantee blocks, wherein m is an integer greater than 1;
• and
• a controller suitable for providing an address including a block address, a command, and data to the memory device,
• wherein the memory device generates bad block information by detecting defective memory blocks among the first to m-th guarantee blocks, determines first to m-th offset values respectively corresponding to the first to m-th guarantee blocks based on the bad block information, and generates a block selection address by reflecting an offset value selected from the first to m-th offset values onto a block address when the block address corresponds to any of the first to m-th guarantee blocks, and by reflecting the m-th offset value onto the block address when the block address corresponds to any of the memory blocks except for the first to m-th guarantee blocks.

A operating method of a semiconductor memory device including a plurality of memory blocks including first to m-th guarantee blocks, wherein m is an integer greater than 1, the method comprising:

• determining whether any of the first to m-th guarantee blocks is defective, based on bad block information, and configuring fields of a repair mapping table by setting first to m-th offset values respectively corresponding to the first to m-th guarantee blocks according to a determination result;
• generating a block selection address according to an offset value selected from the first to m-th offset values by determining whether a block address corresponds to any of the first to m-th guarantee blocks;
• and
• selecting a memory block corresponding to the block selection address, from the memory blocks.