ZHCSJS8 May 2019 ADS7138
ADVANCE INFORMATION for pre-production products; subject to change without notice.
In autonomous mode, the device can be programmed to monitor the voltage applied on the analog input pins of the device and generate a signal on the ALERT pin when the programmable high or low threshold values are crossed. In this mode, the device generates the start of conversion using the internal oscillator. The first start of conversion must be provided by the host and the device then generates the subsequent start of conversions.
Figure 13 shows the steps for configuring the operation mode to autonomous mode. Abort the ongoing sequence by setting SEQ_START to 0b before changing the functional mode or device configuration.