TPS65982ABZBHR datasheet(72/121 Pages) TI1

72 / 121 page

VIN_3V3 Valid

Check

BUSPOWERZ

VBUS Present

Configure for

VBUS Power

Check

BUSPOWERZ

Enable PP_HV as

SINK

Enable PP_EXT as

SINK

≤2.4 V

Yes

Load App Code

Yes

>2.4 V

I C Initiated

≤0.8 V

> 0.8 V

TPS65982

SLVSD02D – MARCH 2015 – REVISED JUNE 2019

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Device Functional Modes (continued)

Figure 65. Dead-Battery Condition Flow Diagram

9.4.5 Application Code

The TPS65982 application code is stored in an external flash memory. The flash memory used for storing the

TPS65982 application code may be shared with other devices in the system. The flash memory organization

shown in Figure 66 supports the sharing of the flash as well as the TPS65982 using the flash without sharing.

The flash is divided into two separate regions, the Low Region and the High Region. The size of this region is

flexible and only depends on the size of the flash memory used. The two regions are used to allow updating the

application code in the memory without over-writing the previous code. This ensures that the new updated code

is valid before switching to the new code. For example, if a power loss occurred while writing new code, the

original code is still in place and used at the next boot.

TPS65982ABZBHR Datasheet(PDF) 72 Page - Texas Instruments