TLE6240GP Datasheet, PDF (15/23 Pages) Infineon Technologies AG – Smart 16-fold Low-Side Switch

Data Sheet TLE 6240 GP
Short Circuit to GND: If a drain to ground short circuit exists and the drain to ground current
exceeds 100 µA, short to ground is detected and the LL bit combination is set.
A definite distinction between open load and short to ground is guaranteed by design.
The standard way of obtaining diagnostic information is as follows:
Clock in serial information into SI pin and wait approximately 150 µs to allow the outputs to
settle. Clock in the identical serial information once again - during this process the data com-
ing out at SO contains the bit combinations representing the diagnosis conditions as described
in figure 1.
Reset of the Diagnosis Register
The diagnosis register is reset after reading the diagnosis data (after the falling CS edge).
This is done for channels 1-8 and channels 9-16 separately depending on the previous com-
mand.
By means of the control byte it is possible either to:
a) control the outputs according to the data byte, as well as being able to read the
diagnostic information (two bits per channel)
or b) purely get diagnostic information without changing the state of the outputs
or c) read back the parallel inputs plus a simple diagnosis (one bit per channel)
or d) SPI "Echo Function" as a diagnosis of proper SPI function
a) Serial Control of Outputs
• LL_"H_"HL_"LL_"!L LH_"L_"HH_"LL_"!L
Control Byte
Data Byte
SI information: OR-operation valid for channels 1 to 8.
SO: 16 bit diagnosis for channels 1 to 8 performed during next chip select cycle.
• LL_"H_"HH_"HH_"!H LH_"L_"HH_"LL_"!L
Control Byte
Data Byte
SI information: OR-operation valid for channels 9 to 16
SO: 16 bit diagnosis for channels 9 to 16 performed during next chip select cycle.
• HH_"H_"HL_"LL_"!L LH_"L_"HH_"LL_"!L
Control Byte
Data Byte
SI information: AND-operation valid for channels 1 to 8
SO: 16 bit diagnosis for channels 1 to 8 performed during next chip select cycle.
• HH_"H_"HH_"HH_"!H LH_"L_"HH_"LL_"!L
Control Byte
Data Byte
SI information: AND-operation valid for channels 9 to 16
SO: 16 bit diagnosis for channels 9 to 16 performed during next chip select cycle.
b) Diagnosis Only
V3.1
Page 15
26.Aug 2002