Datasheet

DAC128S085
www.ti.com SNAS407F –AUGUST 2007–REVISED MARCH 2013
When the DAC128S085 first powers up, the DAC is in WRM. In WRM, the registers of each individual DAC
channel can be written to without causing the DAC outputs to be updated. This is accomplished by setting DB15
to "0", specifying the DAC register to be written to in DB[14:12], and entering the new DAC register setting in
DB[11:0] (see Table 2).The DAC128S085 remains in WRM until the mode of operation is changed to WTM. The
mode of operation is changed from WRM to WTM by setting DB[15:12] to "1001". Once in WTM, writing data to a
DAC channel's register causes the DAC's output to be updated as well. Changing a DAC channel's register in
WTM is accomplished in the same manner as it is done in WRM. However, in WTM the DAC's register and
output are updated at the completion of the command (see Table 2). Similarly, the DAC128S085 remains in
WTM until the mode of operation is changed to WRM by setting DB[15:12] to "1000".
Copyright © 2007–2013, Texas Instruments Incorporated Submit Documentation Feedback 17
Product Folder Links: DAC128S085