UM2339 Rev 1

11/26

UM2339

Hardware layout and configuration

25

Note:

When plugging the DIL8 module to the socket, please pay attention to the pin 1.

7.2.3

Using the ST-LINK/V2 to program/debug an external STM8 device

To program/debug an external STM8 device mounted on a user application, it is required to

set all solder bridges OFF (SB1 to SB9) and to remove any DIL8 module from the socket

U3.

The user application must be connected to the STM8-SO8-DISCO using the SWIM

connector (CN1).

Note:

This program/debug connector is only 3.3 V compliant.

7.2.4

Driver

Before connecting the STM8-SO8-DISCO board to a Windows PC via USB, a driver for the

In case the STM8-SO8-DISCO board is connected to the PC before installing the driver, the

PC device manager may report the interface as ‘Unknown’.

To recover from this situation, after installing the dedicated driver, the association of the

‘Unknown’ USB device found on the STM8-SO8-DISCO board to this dedicated driver, must

be updated in the device manager manually.

7.2.5

ST-LINK/V2 firmware upgrade

The ST-LINK/V2 embeds a firmware upgrade mechanism for in-situ upgrade through the

USB port. As the firmware may evolve during the life time of the ST-LINK/V2 product (for

example new functionality, bug fixes, support for new microcontroller families), it is

board and periodically, in order to stay up-to-date with the latest firmware version.

6

GPIO4

Not connected

7

GPIO5/BP

User push-button

8

GPIO6

Not connected

Table 3. DIL8 socket (U3) pinout (continued)

Pin number

Pin name

Description

Table 4. External SWIM connector (CN1) pinout

Pin number

Pin name

Description

1

NC

Not connected

2

SWIM

Serial wire interface module

3

VSS

Ground

4

NRST

Reset of STM8 device