SH7780 Group Example of Using the SCIF in Asynchronous Mode (Serial Data Transfer) REJ06B0717-0100/Rev.1.00 March 2008 Page 4 of 25 2. Description of the Sample Application The sample program uses channel 0 of the SCIF in asynchronous mode to transmit and receive data. Raw received data are sent back by the connected device as transmitted data. In processing for reception, received data are readout from within interrupt handling for the receive data full interrupt. Data are transmitted without using interrupts during the interrupt handling process.