UM0139 datasheet(28/38 Pages) STMICROELECTRONICS

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In-circuit debugging connection with ICD adapter

UM0139

28/38

CLKIN solder point (G2)

Your in-circuit debugging tool can provide the clock signal for initiating in-circuit

communication with the microcontroller on the ICD adapter. To do this, you must complete

the connection with a drop of solder on the CLKIN solder point (G2) shown in Figure 18.

Figure 18.

CLKIN solder point (G2)

When the solder drop is placed on the CLKIN solder point (G2), pin PA5 is relayed to CLKIN

on the ICC connector. PA5 is not available for the application.

When the clock signal is furnished by the in-circuit debugging tool, use the Option Bytes

Disabled mode to start the in-circuit debugging session. For further information about this

mode refer to the online help of your integrated development environment or debugging

software.

4.2

Run the application in standalone mode

Once the microcontroller on the ICD adapter has been programmed during an in-circuit

debugging or in-circuit programming session, it can run the application in place of the target

microcontroller without being connected to an in-circuit debugging tool or the host PC.

Figure 19.

RST/PA3 On jumper (TP2)

To run the application in standalone mode, the RST/PA3 On jumper (TP2) must be fitted

and the ICD On jumper (TP1) must not be fitted.

Solder point G2

MB509

TP1 not fitted

for standalone

TP2 fitted for

standalone

MB509

UM0139 Datasheet(PDF) 28 Page - STMicroelectronics