SBASAM0B March 2024 – November 2024 ADS127L18
PRODMIX
The ADC provides eight general-purpose, digital input/output (GPIO) pins. The GPIO voltage levels are IOVDD and DGND. Figure 7-9 shows the GPIO block diagram.
The GPIO pins are enabled by the GPIO EN register and are programmable as inputs or outputs by the GPIO DIR register. The GPIO pins are read by the GPIO RD register and written by the GPIO WR register. When programmed as an output, a GPIO read register operation returns the value of the GPIO pin voltage. The GPIO pins are multiplexed with other functions, and when GPIO is enabled, have highest priority over other functions. As with all digital inputs, do not let the GPIO pins float when configured as inputs. Figure 7-10 shows the GPIO pin locations.