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CC3130 Arkusz danych(PDF) 20 Page - Texas Instruments |
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CC3130 Arkusz danych(HTML) 20 Page - Texas Instruments |
20 / 75 page 8.7 Brownout and Blackout Conditions The device enters a brownout condition when the input voltage drops below Vbrownout (see Figure 8-4 and Figure 8-5). 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. 1 2 3 4 5 6 7 8 9 Supply Voltage Vbrownout Vblackout Chip in Hibernate Brownout is disabled Chip in Hibernate Brownout is disabled Brownout Chip in Hibernate Brownout is disabled Software Enters Hibernate Chip Exits Hibernate Software Enters Hibernate Chip Exits Hibernate Software Enters Hibernate Chip Exits Blackout Reset & Boots Chip Gets Fully Reset In Blakcout Time 0 V Figure 8-4. Brownout and Blackout Levels (1 of 2) 1 2 3 4 5 6 7 Supply Voltage Vbrownout Vblackout Brownout Time 0 V SLEEP ACTIVE LPDS SLEEP ACTIVE LPDS SLEEP ACTIVE LPDS Figure 8-5. Brownout and Blackout Levels (2 of 2) CC3130 SWRS227 – MARCH 2020 www.ti.com 20 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated |
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