CC3220 Datasheet, PDF (30/84 Pages) Texas Instruments – SimpleLink Wi-Fi Wireless and Internet-of-Things Solution, a Single-Chip Wireless MCU

CC3220
SWAS035A – SEPTEMBER 2016 – REVISED FEBRUARY 2017
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4.8 Brownout and Blackout Conditions
The device enters a brownout condition when the input voltage drops below V_brownout (see Figure 4-4 and
Figure 4-5). This condition must be considered during design of the power supply routing, especially when
operating from a battery. High-current operations, such as a TX packet or any external activity (not
necessarily related directly to networking) can cause a drop in the supply voltage, potentially triggering a
brownout condition. The resistance includes the internal resistance of the battery, the contact resistance of
the battery holder (four contacts for 2× AA batteries), and the wiring and PCB routing resistance.
NOTE
When the device is in HIBERNATE state, brownout is not detected. Only blackout is in effect
during HIBERNATE state.
Figure 4-4. Brownout and Blackout Levels (1 of 2)
Figure 4-5. Brownout and Blackout Levels (2 of 2)
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Specifications
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