SBAS856D June 2017 – May 2019 DAC8740H , DAC8741H
PRODUCTION DATA.
The DAC8740H implements a UART interface and the DAC8741H implements an SPI interface. The interface mode is selected by the IF_SEL pin: a logic high on this pin sets the device to SPI mode and a logic low sets the device to UART mode. An internal pull-down resistor is included to make sure the device powers up in a known state, by default the pull-down sets the interface to UART mode. If changing I/O modes after power-up, a reset command should be issued on RST.