Data Sheet

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BDE Technology Inc.
BDE-WF3235
BDE Dual-Band WiFi MCU Module
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4.8.4 Wake Up From Hibernate Timing
Table 4-7 lists the software hibernate timing requirements.
Note
The internal 32.768-kHz crystal is kept enabled by default when the module goes to hibernate.
Table 4-7. Software Hibernate Timing Requirements
ITEM
NAME
DESCRIPTION
MIN TYP MAX
UNIT
T
HIB_MIN
Minimum hibernate time
10
ms
T
wake_from_hib
(1)
Hardware wakeup time
plus firmware initialization
time
50
(2)
ms
T_APP_CODE_LOAD
App code load time for BDE-
WF3235
BDE-WF3235
Image size (KB) × 0.06
ms
(1) T
wake_from_hib
can be 200ms on rare occasions when calibration is performed. Calibration is performed sparingly, typically when exiting
Hibernate and only if temperature has changed by more than 20°C or more than 24 hours have elapsed since a prior calibration.
(2) Wake-up time can extend to 75ms if a patch is downloaded from the serial flash.
Figure 4-4 shows the timing diagram for wake up from the hibernate state.
Figure 4-4. Wake Up From Hibernate Timing Diagram