ATA5279P-PLQW Atmel, ATA5279P-PLQW Datasheet - Page 12

• Manufacturer Part Number: ATA5279P-PLQW
• Description: IC ANTENNA DVR SIX-FOLD 48QFN
• Manufacturer: Atmel

Specifications of ATA5279P-PLQW

• Rf Type: PEG, TPMS
• Frequency: 125kHz
• Features: RSSI Equipped
• Package / Case: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12
Atmel ATA5279
The second example circuit has two faults in the circuitry.
Figure 3-5.
If channel four is activated in normal operation, a fault shutdown will occur. The reason for this
shutdown (i.e., the entry in the fault register) could either be an overload on the A4P line (here
a short circuit to VS) or a short-circuit on the A4N line to VS. In any case, the IC protects itself
and the external components from damage; however, the fact that there is more than one fail-
ure in the wiring cannot be discovered.
In diagnosis mode, by testing the A4P line with S_H4P and S_L4P, the short circuit to VS
could be found first. The same result would be found when testing the return line switch 4
accordingly, so the presence of more than one fault on coil 4 is determined. The precise fault
cannot be found though. The diagnosis result would be the same both for the above shown cir-
cuit and for the A4N line being directly shorted to VS (without the failure in the coil module,
here R
Shunt2
) and for the combination of the two.
Example 2, Using the Diagnosis Mode
S_H4P
S_L4P
Status_4
A4P
R
Short1
GND
VDS
R
Short2
Status_4N
A4N
S_H4N
S_L4N
9125L–RKE–03/11