Type

Description

D

Digital

A

Analog

O

Output pad

I

Input pad

IO

Bidirectional pad

OD

Open drain output

PD

Pull-down

PU

Pull-up

HV

High voltage

PWR

Power

GND

Ground

2.2

Pin description

2.2.1

CC1 / CC2

CC1 and CC2 are the configuration channel pins used for connection and attachment detection, plug orientation

determination. CC1 and CC2 are HiZ during reset.

2.2.2

CC1DB / CC2DB

CC1DB and CC2DB are enabled by dead battery mode by connecting CC1DB and CC2DB respectively to CC1

and CC2. Thanks to this connection, the pull-down terminations on the CC pins are present by default even if the

device is not supplied (see Section 3.3 Dead battery mode).

must be used.

2.2.3

RESET

Active high reset.

2.2.4

I²C interface pins

Name

Description

SCL

I²C clock, need external pull-up

SDA

I²C data, need external pull-up

ALERT

I²C interrupt, need external pull-up

ADDR0, ADDR1

I²C device address bits (see Section 4 I²C Interface)

Warning: ADDR0 and ADDR1 pins must be connected to ground when there is no connection to an MCU.

STUSB4500L

Pin description

DS13102 - Rev 1

page 5/31