The discharge time durations are also preset by default in the NVM (see Section 7.3 Electrical and timing

characteristics). The discharge time durations can be changed through NVM programming (see Section 5 Start-

up configuration).

(see Section 5 Start-up configuration).

3.2.3

VBUS power path assertion

indirectly, through the VBUS_EN_SNK pin.

The table below summarizes the operating conditions that determine the electrical value of the VBUS_EN_SNK

pin during system operation.

Value

Operating conditions

Connection stage

0

At attachment or during operation

and

Hi-Z

At detachment or during ErrorRecovery

or

Type-C state column refers to the Type-C FSM states as defined in the USB Type-C standard specification.

3.3

Dead battery mode

discharged and therefore to start the battery charging process without any external support. This mode is also

Dead battery mode operates only if the CC1DB and CC2DB pins are connected respectively to the CC1 and CC2

pins. Thanks to these connections, the STUSB4500L presents a pull-down termination on its CC pins and

advertises itself as a sink even if the device is not supplied.

When a source system connects to a USB Type-C port, it detects the pull-down termination, establish the source-

3.4

High voltage protections

power path. The device integrates an internal circuitry on the CC pins that tolerates high voltage and ensures

3.5

Hardware fault management

During system operation, the STUSB4500L handles some pre-identified hardware fault conditions. When such

conditions happen, the circuit goes into an ErrorRecovery state as defined in the USB Type-C standard

specifications.

STUSB4500L

Dead battery mode

DS13102 - Rev 1

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