Data Sheet

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ADVANCEINFORMATION
32-kHz
XTAL/CXO
VBAT
nRESET
nHIB
ACTIVE HIBERNATE HW WAKEUP+FW INIT ACTIVE HIBERNATE
T
hib_min
T
wake_from_hib
28
CC3135MOD
SWRS225A –FEBRUARY 2019–REVISED AUGUST 2019 www.ti.com
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Specifications Copyright © 2019, Texas Instruments Incorporated
(1) If temperature changes by more than 20°C, initialization time from HIB can increase by 200 ms due to radio calibration.
(2) Ensure that the nHIB pulse width is kept above the minimum requirement under all conditions (such as power up, MCU reset, and so
on).
5.15.4 Wakeup From HIBERNATE Mode Timing
Figure 5-7 shows the timing diagram for wakeup from HIBERNATE mode.
Figure 5-7. nHIB Timing Diagram
NOTE
The internal 32.768-kHz XTAL is kept enabled by default when the chip goes into
HIBERNATE mode in response to nHIB being pulled low.
Table 5-8 describes the timing requirements for nHIB.
Table 5-8. nHIB Timing Requirements
ITEM NAME DESCRIPTION MIN TYP MAX UNIT
T
hib_min
Minimum hibernate time Minimum pulse width of nHIB being low
(1)
10 ms
T
wake_from_hib
Hardware wakeup time plus
firmware initialization time
See
(2)
50 ms