SFFS141 December   2021 TCAN1167-Q1

 

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5.3.3.4 SM-12: Sleep Wake Error Timer; tINACTIVE

The sleep wake error (SWE) timer is a timer used to determine if specific external and internal functions are working. Upon power up, POR or UVSUP event, the SWE timer starts, tINACTIVE, and the processor has typically 4.5 minutes to configure the device, clear the PWRON flag or change the device to normal or listen mode. This feature cannot be disabled for power up. If the device has not had the PWRON flag cleared or been placed into normal or listen mode, it enters sleep mode and sets the WKERR flag.