TLE4998S3 Datasheet, PDF (25/39 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

TLE4998S
Error Detection
7
Error Detection
Different error cases can be detected by the On-Board Diagnostics (OBD) and reported
to the microcontroller in the status nibble (see Chapter 13).
7.1
Voltages Outside the Operating Range
The output signals an error condition if V_DD crosses the overvoltage threshold level.
Table 14 Overvoltage
Parameter
Symbol Limit Values
Unit Notes
min. typ. max.
Overvoltage threshold V_DDov 16.65 17.5 18.35 V
1)
1) _{Overvoltage bit activated in status nibble, output stays in “off” state (high ohmic)}
7.2
EEPROM Error Correction
The parity method is able to correct a single bit in the EEPROM line. One other single bit
error in another EEPROM line can also be detected, but not corrected. In an
uncorrectable EEPROM failure, the open drain stage is disabled and kept in the off state
permanently (high ohmic/sensor defect).
Data Sheet
25
V 1.0, 2008-07