Reset pin on SWD connector

[gsantha]

Posted on December 03, 2011 at 19:17

Hi!

Can anybody tell me where is the reset# pin (T_JRST) on the SWD header? I can see only these 4 pins:

1 connected to GND with 10K

2 T_JTCK

3 T_JTMS

4 GND

T_JRST is connected to the Discovery MCU only.

http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/CD00267113.pdf

, page 22.

Thank you!

[Tesla DeLorean]

Posted on December 03, 2011 at 23:22

Which is why a lot of us don't care to reduce the pin count that much.

If you don't want a big header at least place test points for the JTAG pins and resets, these can be probe-able pads, or edge castelations.

The 0.05'' pitch 10-pin header standard is much the preferred method

http://support.code-red-tech.com/CodeRedWiki/CM3_SWD