Datasheet

Evaluation Board User Guide UG-094
Rev. A | Page 5 of 12
08878-005
Figure 5. AD527xSDZ Evaluation Board Main Window
SOFTWARE OPERATION
The AD527xSDZ evaluation board main window has three
sections: RDAC, CONTROL REGISTER, and 50-TP.
These sections do the following:
• The RDAC section displays the data that is read from the
RDAC, and it is shown in the resistor figure. When users
write to the part, this value is updated.
• The CONTROL REGISTER section allows access to the
control register, enabling or disabling the resistor performance
(R-PERFORMANCE) mode, RDAC write protection, and
the 50-TP memory.
• The 50-TP section shows the LAST FUSE PROGRAMMED,
and the data blew into the fuses.
The AD527xSDZ evaluation board main window also includes
four buttons that do the following:
• POWERDOWN powers down the part. Note that when
users click the POWERDOWN button, the text of the
button changes to POWERUP. The button automatically
toggles the power-up/power-down bit when it is pressed.
• SOFT RESET sends a reset by software.
• HARD RESET sends a reset by hardware. Note that this is
only available for the EVAL-AD5272SDZ.
• BLOW FUSE blows the actual RDAC register data in the
50-TP memory. When it is successful, the message box in
Figure 6 appears, and when it is unsuccessful, the message
box in Figure 7 appears. Before clicking BLOW FUSE,
remember to enable the 50-TP memory.
08878-006
Figure 6. Blow Fuse Successfully
08878-007
Figure 7. Blow Fuse Unsuccessful
EXIT closes the program. Note that this does not reset the part.