UM1037 datasheet(7/46 Pages) STMICROELECTRONICS

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UM1037

Hardware layout and configuration

Doc ID 18294 Rev 1

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party debug tools are also supported by using external ERNI SWIM connector CN5 or low

cost SWIM connector CN8.

A specific driver needs to be installed on your PC for communication with the embedded

ST-LINK/V2.The InstallShield package ST-LINK_V2_USBdriver.exe is available from the ST

website. To download and install this driver, please refer to Software and development tools

page for ultra low power STM8L family available on www.st.com.

The embedded ST-LINK/V2 is connected to the PC via a standard USB cable connected to

connector CN9.The bicolor LED LD9 (COM on silkscreen) advises on the status of the

communication as follows:

●

Slow blinking Red/Off : At power on before USB init

●

Fast blinking Red/Off : After the first correct communication between PC and ST-

Link/V2 (enumeration)

●

Red Led On: When initialisation between PC and ST-LINK/V2 is successfully finished

●

Green Led On: After successful target communication initialisation

●

Blinking Red/Green: During communication with target

●

Red On: Communication finished and OK

●

Orange On: Communication failure

Note:

It is possible to power the board via CN9 (Embedded ST-LINK/V2 USB connector) even if an

external tool is connected to CN5 (ERNI connector) or CN8 (Low cost connector).

The SWIM connector or embedded ST-LINK/V2 can be enabled by setting jumper JP2.

2.2

Power supply

STM8L1528-EVAL evaluation board is designed to be powered by a 5 V DC power supply

and to be protected by PolyZen from a wrong power plug-in event. It's possible to configure

the evaluation board to use any of following three sources for the power supply.

●

5 V DC power adapter connected to CN12, the Power Jack on the board (Power Supply

Unit PSU in JP13 jumper description in Table 2).

●

5 V DC power with 500mA limitation from CN9, the USB type B connector for

ST-LINK/V2 (USB 5 V power (USB in JP13 jumper description in Table 2)).

●

5 V DC power from CN4, the extension connector for daughter board (Daughter Board

power source (DTB in JP13 jumper description in Table 2)).

The power supply is configured by setting the related jumpers JP4, JP13 and JP14 as

described in Table 2.

Table 1.

SWIM debugging -related jumpers

Jumper

Description

Jumper setting

JP2

PA0 is connected to SWIM connector CN5, CN8 and

embedded ST-LINK/V2 when JP2 is set as shown to the right

(Default setting):

PA0 is connected to IR LED, LD7 when JP2 is set as shown to

the right.

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