Part Number:AWR1642
From the official website data, the AWR1642 has two startup modes: 1, 001 (corresponding to sop2, sop1, sop0) normal startup mode; 2, 101 (corresponding to sop2, sop1, sop0) program download mode
The number of tiles is 560pcs, and 100+pcs has the problem that AWR1642 can't load the program.
In this 100+pcs, some can start normally in 000 mode. The normal PCBA uses the 000 mode and the AWR1642 does not start at all.
This 280pcs is the same batch of PCB, and the patch is being made at the same time.
The silk screen of the AWR1642 is: XAWR1642-IS-79ZDYG9-502.
Excuse me, what is the cause of this phenomenon?
thank you very much!