9
4929B–AUTO–01/07
ATA6264 [Preliminary]
4.1 Protection Against Substrate Currents
Due to the fact that the ATA6264 is connected to the wiring harness and to components outside
of the ECU, negative voltages at the following pins might occur:
• IASG interface: IASG1, IASG2, IASG3, IASG4, IASG5
• USP comparator: USP
If substrate currents occur, it is guaranteed by design that no disturbance and malfunction of the
following blocks and functions will happen:
• No disturbance of RESET block.
• No voltage changes of any regulators outside of their tolerances.
• No impact on digital circuitry (for example, changes of latches, status register, etc.)
• No latch up of any circuitry
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