SBOS644C February 2013 – March 2018 INA231
In order to communicate with the INA231, the master must first address slave devices using a corresponding slave address byte. The slave address byte consists of seven address bits and a direction bit that indicates whether the action is to be a read or write operation.
The INA231 has two address pins: A0 and A1. Table 2 describes the pin logic levels for each of the 16 possible addresses. The state of pins A0 and A1 is sampled on every bus communication. Set these pins before any activity on the interface occurs.