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8. Press key 'c' to read configuration. The values you programmed (test bit 1, config = 0x55)
should be displayed as shown in the screen below:
9. When the test bit is set to '1', test data can be placed into the data buffer through the SPI
bus, this is a test feature which tests a large portion of the device, but not the comparator
and threshold setting circuits. Press key 'r' to read data, only the test data should now be
read, as shown below:
10. To configure all U1 sensors as GND/Open press key 'w' and set test bit to 0, then enter FF.
Press 'c' to read registers back to the screen and verify that the configuration reads;
All 8 sensors are now set to detect the GND/Open states. The short cut keys 'G' and 'S' can also
be used the set all sensors to GND/Open and Supply/Open respectively.
QSG‐8428‐R Rev. A
0
0xFF
HOLT INTEGRATED CIRCUITS
10
Oct 2014
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