On my psoc 3 prototype I am currently using a 10 pin connector with the mini prog 3 for development. For production I would prefer to use a less expensive 5 pin connector to program the boards using the 5 pin connector on the mini prog 3 rather than the 10 pin one. Will this work ok or will there be problems?

Yes this will certainly work. You need to have the following pin connections between PSoC and minirprog3 for that.

P1[0] --> SWDIO

P1[1]--> SWDCK

VDDIO1,VDDA,VDDD -->Vtarg

XRES --> XRES

and Common ground.

Thanks, does the miniprog3 also support single wire debug through the 5 pin connector? I'm guessing that it will since it uses the same pins for programming.

Hi Kypparila,

Serial Wire Debug (SWD) is supported by both the 5-pin and the 10-pin connectors available on the miniprog3. Single Wire Viewer (SWV) is supported through 10-pin connector.

This is documented in the Miniprog3 User Guide. Here is the excerpt from the user guide:

"MiniProg3 supports programming and debugging PSoC 3 and PSoC 5 devices, using SWD, through the 5-pin or 10-pin connector.

The Single Wire Viewer (SWV) interface, also introduced by ARM, is used for program and data monitoring, where the firmware may output data in a method similar to “printf” debugging on PCs, using a single pin. MiniProg3 supports monitoring of PSoC 3 and PSoC 5 firmware, using SWV, through the 10-pin connector and in conjunction with SWD only."

The user guide can be found here www.cypress.com/?docID=29029

Yes,the 5pin connector will easy work.Take a note of the connections U2 mentioned.

Also,while making the PCB,keep enough space around the connector so that you can easily insert the miniprog..Just something I had kept in mind while making my psoc designs..

I have done the same mistake which kmmankad has told. Keep some space aroung the programming header. Also, if you have a reset source on your board from a source other than Miniprog, try to have a diode that isolates the connection from your Miniprog and the connection from the other reset source. You don't want random resets on your XRES pin. Also, have a pullup pn the XRES Pin.

@U2 : external pullup on XRES? But its already internally pulled up,right? ..