A booting system including a boot code transmission control unit to sequentially execute a booting operation concurrently with storing boot codes stored in a NAND flash memory in an internal memory. The boot code transmission control unit includes storage units to store addresses of the boot codes stored in the internal memory and an address of a boot code to be accessed by a CPU core for the execution of the booting operation, respectively. These addresses are checked by monitoring a memory interface and a bus interface. When the boot code addresses are the same, the boot code transmission control unit transmits a boot code corresponding to the same address, among the boot codes stored in the internal memory, to the CPU core so that the CPU core can sequentially execute the booting operation.