8

Package information

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages,

depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product

status are available at: www.st.com. ECOPACK is an ST trademark.

8.1

Pin descriptions

Figure 20. SO8N pinout - top view

1

2

3

4

8

7

6

5

RESET

VCC

GND/NC

GND

NC

SCL

NC

SDA

Figure 21. UFDFPN8 pinout 1- top view

GND

GND/NC

VCC

NC

SDA

NC

SCL

RESET

4

3

2

1

5

6

7

8

Figure 22. UFDFPN8 pinout 2- top view

GND

GND/NC

NC

NC

SDA

SCL

NC

VCC

4

3

2

1

5

6

7

8

Note:

UPDFN8 pinout 2 does not have a reset pin. All references to the reset pin in this document do

not apply to this pinout.

The table below provides the names and description of the four contacts on the STSAFE-A120 device. Details on

each contact are provided later in this text.

Table 8. Signal descriptions

Signal

Name

Description

VCC

Supply voltage

The supply voltage is supported for powering all internal STSAFE-A120 functions.

GND

Supply and

signals ground

Ground reference pin for power and all I/O signals.

RESET

Reset

This input signal is used to reset STSAFE-A120. The RESET pin is pull-down by default meaning

that the device is reset if connected to ground or if the pin is floating. The device is active if the

RESET pin is tied high.

SCL

Serial clock

This input signal is used to strobe all data in and out of STSAFE-A120.

The I²C master drives the clock signal.

SDA

Serial data

This I/O signal is used to transfer data into and out of STSAFE-A120.

STSAFE-A120

Package information

DS14609 - Rev 1

page 25/38