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What is connected to the "internal wakeup line"

Question asked by Uwe Bonnes on Feb 2, 2017
Latest reply on Feb 6, 2017 by Khouloud G



reference manuals for the L4 series in the power section talk about a EIWUL bit in the PWR->CR3 register, enabling an "internal wakeup line". A search in the manuals and with google does not bring up any further explanation of what is connected to this "internal wakeup line". Some explanation in the reference manuals would help.