Hello,
We are coming across issues with the 32.768 kHz clock on the CC2640r2. After building up a few boards, we did a bluetooth connection test where the units failed (we've successfully ran this same exact type of test with a cc2640r1). We have a build that buffers the 32.768kHz clock through a GPIO from the 2640r2. We use this pin to measure the clock on our factory test build in production builds. When we measure the clock output with the r2 we are getting very sporadic values. Those values are not close to 32.768 and are off by several thousand ppm. All other clocks are measuring correctly. Also, we see that if we remove the chip from the board and then place it back, that we get different results but still way off. As a control test, we measured the clocks with a CC2640r1 and a known good pcb that we've used in production, then we removed that same chip and placed it on our new pcb and had good results. We then put a CC2640r2 on the known good pcb and got bad results. Is there something that we need to be doing differently in firmware? We were under the impression that this was a drop in replacement. Thanks in advance.
-Allen
