SBOS588B December 2011 – June 2019 AFE030
PRODUCTION DATA.
DAC (Pin 7)
The DAC pin is used to configure the SPI to either read or write data to the Command and Data Registers, or to write data to the DAC registers. Setting the DAC pin high allows access to the DAC registers. Setting the DAC pin low allows access to the Command and Data Registers.
SD (Pin 8)
The Shutdown pin (SD) can be used to shut down the entire AFE030 for maximum power savings. When the SD pin is low, normal operation of the AFE030 occurs. When the SD pin is high, all circuit blocks within the AFE030, including the serial interface, are placed into the lowest-power operating modes. In this condition, the entire AFE030 draws only 95 μA of current. All register contents at the time the AFE030 is placed into shutdown mode are saved; upon re-enabling the AFE030, the register contents retain the respective saved values.
INT (Pin 9)
The Interrupt pin (INT) can be used to signal the microprocessor of an unusual operating condition that results from an anomaly on the ac mains. The INTpin can be triggered by two external circuit conditions, depending upon the Enable Register settings. The AFE030 can be programmed to issue an interrupt on these conditions: