Texas Instruments SimpleLink CC3220MOD Series Manual page 37

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Table 8-2 lists the timing requirements for the first-time power-up and reset removal.
Table 8-2. First-Time Power-Up and Reset Removal Timing Requirements
ITEM NAME
T1 Supply settling time
T2 Hardware wake-up time
T3 Initialization time
App code load time
for CC3220MODS and
CC3220MODAS
T4
App code load time
for CC3220MODSF and
CC3220MODASF
8.14.2 Power-Down Sequencing
For proper power down of the CC3220MODx and CC3220MODAx module, ensure that the nRESET (pin 35) and
nHIB (pin 4) pins have remained in a known state for a minimum of 200 ms before removing power from the
module.
8.14.3 Device Reset
When a device restart is required, the user may issue a negative pulse to the nRESET pin. The user must
ensure the reset is properly applied: A negative reset pulse (on pin 35) of at least 200-mS duration.
8.14.4 Wake Up From Hibernate Timing
Table 8-3 lists the software hibernate timing requirements.
The internal 32.768-kHz crystal is kept enabled by default when the module goes to hibernate.
ITEM
T Minimum hibernate time
HIB_MIN
Hardware wakeup time plus
(1)
T
wake_from_hib
firmware initialization time
App code load time
for CC3220MODS and
CC3220MODAS
T_APP_CODE_LOAD
App code load time
for CC3220MODSF and
CC3220MODASF
(1) T can be 200 ms on rare occasions when calibration is performed. Calibration is performed sparingly, typically when exiting
wake_from_hib
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 75 ms if a patch is downloaded from the serial Flash.
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DESCRIPTION
Depends on application board power supply, decoupling capacitor,
and so on
Internal 32-kHz crystal settling plus firmware initialization time plus
radio calibration
CC3220MODS and CC3220MODAS
CC3220MODSF and CC3220MODASF
Table 8-3. Software Hibernate Timing Requirements
NAME
CC3220MODS and CC3220MODAS
CC3220MODSF and
CC3220MODASF
Product Folder Links:
SWRS206E – MARCH 2017 – REVISED MAY 2021
Note
DESCRIPTION
CC3220MOD CC3220MODA
CC3220MOD, CC3220MODA
MIN TYP MAX UNIT
3
25
1.35
Image size (KB) × 1.7 ms
Image size (KB) × 0.06 ms
MIN TYP MAX
10
(2)
50
Image size (KB) × 1.7 ms
Image size (KB) × 0.06 ms
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ms
ms
s
UNIT
ms
ms
37