JAJSEG5A January 2018 – October 2018 ADS112U04
Figure 74 shows the principle interface connections for the ADS112U04.
Most microcontroller UART peripherals can operate with the ADS112U04. The baud rate is determined by the host via a synchronization word that must be sent to the ADS112U04 before each command. Details of the UART communication protocol of the device can be found in the Programming section.
TI recommends placing 47-Ω resistors in series with all digital input and output pins (TX, RX, and GPIO2/DRDY). This resistance smooths sharp transitions, suppresses overshoot, and offers some overvoltage protection. Care must be taken to meet all UART timing requirements because the additional resistors interact with the bus capacitances present on the digital signal lines.