An apparatus comprising: a near-field communication, NFC, protocol tag circuit including an antenna circuit, a first register circuit having configuration data configured and arranged to facilitate remote-field communications via a second protocol that is different than the NFC protocol, and a second register circuit having data indicative of a last accessed byte of the configuration data, the NFC tag circuit being configured and arranged to, using radio frequency energy received from a remote reader circuit, in response to a NFC protocol radio frequency communication received from the remote reader circuit via the antenna circuit, access the configuration data from the first register and transmit the accessed configuration data via the antenna circuit using the NFC protocol, and based on the data indicative of the last accessed byte of the configuration data, generate a trigger signal in response to a last byte of the configuration data being accessed; and a host circuit connected to the NFC tag circuit and configured and arranged to operate in a sleep mode in which the host circuit does not wirelessly communicate via the second protocol, transition from the sleep mode to a wake mode in response to receiving the trigger signal from the NFC tag circuit, and while operating in the wake mode, communicate with the reader circuit via radio frequency communications of the second communication protocol. a near-field communication, NFC, protocol tag circuit including an antenna circuit, a first register circuit having configuration data configured and arranged to facilitate remote-field communications via a second protocol that is different than the NFC protocol, and a second register circuit having data indicative of a last accessed byte of the configuration data, the NFC tag circuit being configured and arranged to, using radio frequency energy received from a remote reader circuit, in response to a NFC protocol radio frequency communication received from the remote reader circuit via the antenna circuit, access the configuration data from the first register and transmit the accessed configuration data via the antenna circuit using the NFC protocol, and based on the data indicative of the last accessed byte of the configuration data, generate a trigger signal in response to a last byte of the configuration data being accessed; and in response to a NFC protocol radio frequency communication received from the remote reader circuit via the antenna circuit, access the configuration data from the first register and transmit the accessed configuration data via the antenna circuit using the NFC protocol, and based on the data indicative of the last accessed byte of the configuration data, generate a trigger signal in response to a last byte of the configuration data being accessed; and a host circuit connected to the NFC tag circuit and configured and arranged to operate in a sleep mode in which the host circuit does not wirelessly communicate via the second protocol, transition from the sleep mode to a wake mode in response to receiving the trigger signal from the NFC tag circuit, and while operating in the wake mode, communicate with the reader circuit via radio frequency communications of the second communication protocol. operate in a sleep mode in which the host circuit does not wirelessly communicate via the second protocol, transition from the sleep mode to a wake mode in response to receiving the trigger signal from the NFC tag circuit, and while operating in the wake mode, communicate with the reader circuit via radio frequency communications of the second communication protocol.