Dear all,
We have migrated an existing design from an LPC1315 to the new MCXA175VLH. We generally use USB in ISP mode to upload the software. This works without any problems with the LPC1315 (and countless other processors). With the MCXA175VLH, however, no message appears after connecting to the PC. The ISP pin P0.6 is set to low, and the RESET pin is also being handled correctly. The two lines, DP+ and DM-, are each connected to the PC via a 33-ohm resistor.
The processor itself is working properly—access via SWDIO works flawlessly—so the debugger works as well.
Any ideas?
Hello
According to UG10365: MCX A175 Hardware Design Guide Chapter 6.3 ISP Programming and Table 13; The MCX A17 only support Universal Asynchronous Receiver/Transmitter (UART) as Serial Peripheral Interface (SPI) interface. Inter-Integrated Circuit (I2C), SPI, and Universal Serial Bus (USB) ISP interfaces are not supported.
The USB connection won't be read in this context, so please add the UART ISP connection instead.
If you are designing a MCXA175 custom board, please refer to this Hardware design guide for more recommendations and instructions
Best Regards, Luis
Dear Luis,
Thanks for your reply. Could you please share the document in question? The link doesn't work, and I can't find UG10365 anywhere either. In any case, this feature is explicitly described in the current Reference Manual (see above) and elsewhere. I also can't imagine that such a feature (which was already standard in older series) wouldn't be available.
BR, Kay
Hello,
You need to enter with a NXP account in NXP.com to access the documentation.
Please sign in or Register for an NXP account [In the upper right section of the NXP.com page]
And then in the MCXA17x main page Documentation [User Guide Section] you can look for the [UG10365] or after sign in, enter the link for UG10365: MCX A175 Hardware Design Guide
Best Regards
Maybe you can refer to FRDM-MCXA174 Board which has USB programming function as below
I would like to perform the initial setup of my hardware via USB. MCU-Link (an additional controller) would not be a solution for this.
Hello,
Of course I'm logged in—the document doesn't exist—see below!
BR
Hello,
Could you please help us by clear cookies /cache and refresh the page;
Also trying a different browser or incognito window may help, since to access the mentioned documentation requires the log in in NXP account.
Could you help us share a photo of what do you see in MCXA17 page>Documentation section>User Guide ?
Best Regards
As I mentioned above, I think it would be very helpful if NXP shared documents like this with the public. The link provided leads nowhere, just like the link on the product page. The table is only of limited use to me. I need to select a new processor right now, and there’s simply not enough important information available! Where can I find this document?