This opcode enables the output of conversion data on each DRDY without the need to issue subsequent read data opcodes. This mode places the conversion data in the output register and may be shifted out directly. The read data continuous mode is the device default mode; the device defaults to this mode on power-up.
RDATAC mode is cancelled by the Stop Read Data Continuous command. If the device is in RDATAC mode, a SDATAC command must be issued before any other commands can be sent to the device. There is no restriction on the SCLK rate for this command. However, the subsequent data retrieval SCLKs or the SDATAC opcode command should wait at least 4 tCLK cycles. RDATAC timing is shown in Figure 52. As Figure 52 shows, there is a keep out zone of 4 tCLK cycles around the DRDY pulse where this command cannot be issued in. To retrieve data from the device after RDATAC command is issued, make sure either the START pin is high or the START command is issued. Figure 52 shows the recommended way to use the RDATAC command. RDATAC is ideally-suited for applications such as data loggers or recorders where registers are set once and do not need to be re-configured.