TLE8263-2E Datasheet, PDF (41/94 Pages) Infineon Technologies AG – Universal System Basis Chip

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V_WK
V_WK,th
TLE8263-2E
WK Pin
V_WK,th
t
tWK,f
tWK,f
No Wake Event
Wake Event
Figure 17 Wake-up Timing
Wake Pin Diagram .vsd
9.2.1 Transition from Normal to Sleep Mode.
The SBC can not be sent from Normal Mode to Sleep Mode with uncleared interrupt in the WK interrupt bits “WK
0 WK pin” and “WK 1 WK pin”. This is implemented to avoid that a wake information from the WK pin gets lost
during the transition from Normal to Sleep Mode. If a wake up appears during the µC sets the SBC to Sleep Mode,
the SBC will wake up directly after going to Sleep Mode. There is no difference if the bits “WK 0 WK pin” or “WK
1 WK pin” bit were set during the transition or were just not cleared before sending the SPI command for Sleep
Mode, the SBC will wake-up after entering the Sleep Mode. Therefore it always needs to be ensured that the bits
are cleared before sending the SBC to Sleep Mode.
Data Sheet
41
Rev. 1.0, 2009-03-31