: Chip Not Recognized by J-Link
I need advice from someone familiar with the nRF9160-SICA-B1A-R7.
I purchased an nRF9160-SICA-B1A-R7 chip individually from Digi-Key and designed a custom PCB based on the circuit from Sakura IoT's Mono Platform, which also uses the nRF9160. I'm trying to connect the chip to my PC via SWD using a J-LINK EDU MINI and have installed nRF Connect for Desktop. However, when I try to recognize the chip using J-Link Commander, it does not detect the nRF9160.
I initially suspected an issue with the ENABLE pin, but it receives a 3.3V input when powered on. I've compared my design with the original schematic and the nRF9160 datasheet, and everything seems correct. I’m now considering the possibility of a hardware discrepancy, but I’ve used the same datasheet as for other nRF9160 variants, so I’m unsure of what could be causing the issue.
Attached is the schematic of my custom board.
If anyone has any hints or suggestions, I would greatly appreciate your help.