A display apparatus comprising: a controller ; a communication module configured to: receive data from an external electronic device while the communication module is in a sleep mode in which reception of the data from the external electronic device is permitted and transmission of the data to the external electronic device is not permitted, and based on the received data containing valid data, transmit an interrupt signal to the controller ; and a Central Processing Unit, CPU, sub-system comprising a CPU configured to be in a sleep mode of the CPU wherein the controller is configured to: based on the communication module transmitting the interrupt signal, switch the communication module from the sleep mode to an operation mode, in which the reception and the transmission of the data are permitted, based on the communication module switched to the operation mode, switch the CPU from the sleep mode to the operation mode, and control the CPU ; wherein the CPU is configured to receive and process the data transmitted from the communication module , and transmit the processed data to the communication module , wherein, based on the processed data transmitted by the communication module to the external electronic device, the CPU is configured to control the communication module to switch from the operation mode to the sleep mode, and wherein, based on the communication module switched to the sleep mode, the CPU is switched from the operation mode to the sleep mode. a controller ; a communication module configured to: receive data from an external electronic device while the communication module is in a sleep mode in which reception of the data from the external electronic device is permitted and transmission of the data to the external electronic device is not permitted, and based on the received data containing valid data, transmit an interrupt signal to the controller ; and receive data from an external electronic device while the communication module is in a sleep mode in which reception of the data from the external electronic device is permitted and transmission of the data to the external electronic device is not permitted, and based on the received data containing valid data, transmit an interrupt signal to the controller ; and a Central Processing Unit, CPU, sub-system comprising a CPU configured to be in a sleep mode of the CPU wherein the controller is configured to: based on the communication module transmitting the interrupt signal, switch the communication module from the sleep mode to an operation mode, in which the reception and the transmission of the data are permitted, based on the communication module switched to the operation mode, switch the CPU from the sleep mode to the operation mode, and control the CPU ; wherein the CPU is configured to receive and process the data transmitted from the communication module , and transmit the processed data to the communication module , based on the communication module transmitting the interrupt signal, switch the communication module from the sleep mode to an operation mode, in which the reception and the transmission of the data are permitted, based on the communication module switched to the operation mode, switch the CPU from the sleep mode to the operation mode, and control the CPU ; wherein the CPU is configured to receive and process the data transmitted from the communication module , and transmit the processed data to the communication module , wherein, based on the processed data transmitted by the communication module to the external electronic device, the CPU is configured to control the communication module to switch from the operation mode to the sleep mode, and wherein, based on the communication module switched to the sleep mode, the CPU is switched from the operation mode to the sleep mode. <EOS>