5.4 SLEEP MODE

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In Sleep mode, all available VDDx regulators are deactivated. The INH pin (if available) is high ohmic. The LIN transceiver is in LIN Standby mode (see LIN Transceiver) and the gate drive unit is in GDU OFF mode (see GDU OPERATION MODES). The device reacts to LIN bus wake-up, local wake-up and system interrupt events. Before entering Sleep mode, at least one wake-up mechanism must be unmasked to allow proper wake-up.

The device exits Sleep mode if either a LIN bus wake-up or a local wake up (WAKE) is detected. It will also exit Sleep mode as soon as an interrupt event or a Watchdog Reset occurs.

The device will enter Sleep mode in the following cases (see Device Operating Modes):

From Normal Mode or Standby Mode via the DOPM SPI command 010 = Sleep mode, if no wake-up event is pending and at least one wake-up source is enabled. All interrupt flags must be cleared before the device can enter Sleep mode.
From all modes when a VIO overvoltage has been detected and the VDDIOOVSD bit is set to ‘1’.