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L9826 View Datasheet(PDF) - STMicroelectronics

Part NameL9826 ST-Microelectronics
STMicroelectronics ST-Microelectronics
DescriptionOctal protected low-side driver with diagnostic and serial/parallel input control
L9826 Datasheet PDF : 19 Pages
First Prev 11 12 13 14 15 16 17 18 19
Functional description
L9826
5.3
Output stage diagnostics
All the outputs voltage are compared with the diagnostic threshold (0.38 Typ · VCC) and this
information is transferred in dedicated fault latches which are cleared when the NCS
reaches the state low. Afterward the latch stores the status bit and the first reading after the
error might be wrong. The second one is considered right.
The next Figure 7 and 8 show the diagnostic bits read out on SDO and their organization
into the dedicated registers.
When NCS is low the data contained in the shift register are transferred to SDO output every
CLK rising edge.
Figure 7. The pulse diagram to read the outputs status register
.#3
#,+
3$/
3$)
-3"       ,3"
-3"       ,3"
Figure 8. The structure of the outputs status register
-3"
,3"
$IAG $IAG $IAG $IAG $IAG $IAG $IAG $IAG
'!0'03
$IAGNOSTIC BITOUTPUT
$IAGNOSTIC BITOUTPUT
$IAGNOSTIC BITOUTPUT
$IAGNOSTIC BITOUTPUT
$IAGNOSTIC BITOUTPUT
$IAGNOSTIC BITOUTPUT
$IAGNOSTIC BITOUTPUT
$IAGNOSTIC BITOUTPUT
'!0'03
14/19
Doc ID 7214 Rev 10
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