CC3220MODAX datasheet(39/100 Pages) TI1

39 / 100 page

CC3220MOD, CC3220MODA

www.ti.com

SWRS206B – MARCH 2017 – REVISED AUGUST 2017

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Product Folder Links: CC3220MOD CC3220MODA

Specifications

5.7

Brownout and Blackout Conditions

The module enters a brownout condition whenever the input voltage dips below VBROWNOUT (see Figure 5-

4 and Figure 5-5). This condition must be considered during design of the power supply routing, especially

if 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. The resistance includes the internal resistance of the battery, contact resistance of the battery

holder (four contacts for a 2× AA battery), and the wiring and PCB routing resistance.

NOTE

When the module is in HIBERNATE state, brownout is not detected. Only blackout is in

effect during HIBERNATE state.

Figure 5-4. Brownout and Blackout Levels (1 of 2)

Figure 5-5. Brownout and Blackout Levels (2 of 2)

In the brownout condition, all sections of the device shut down within the module except for the Hibernate

block (including the 32-kHz RTC clock), which remains on. The current in this state can reach

approximately 400 µA.

The blackout condition is equivalent to a hardware reset event in which all states within the module are

lost. Vbrownout = 2.1 V and Vblackout = 1.67 V

CC3220MODAX Datasheet(PDF) 39 Page - Texas Instruments