TLE8262E Datasheet, PDF(41/93 Page) Infineon Technologies AG – Universal System Basis Chip HERMES Rev. 1.0

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TLE8262E Datasheet, PDF (41/93 Pages) Infineon Technologies AG – Universal System Basis Chip HERMES Rev. 1.0

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VWK

VWK,th

TLE8262E

WK Pin

VWK,th

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 âWK

0 WK pinâ and âWK 1 WK pinâ. 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 ÂµC sets the SBC to Sleep Mode,

the SBC will wake up directly after going to Sleep Mode. There is no difference if the bits âWK 0 WK pinâ or âWK

1 WK pinâ 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

Rev. 1.0, 2009-03-31

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