Other Parts Discussed in Thread: LP5907, SN74LVC125A
Hello
We are facing a problem when power up TM4C1294, some device were not work properly.
The following errata looks like the problem we faced.
It's very difficult to reach 100us soft-start, did you have other solution?
SYSCTL#09 Some Devices may not Start Properly During Power up
Description: In very rare cases, the internal LDOs may not start properly during power up. If the LDOs do not start properly, the device may not begin operating, and VDDC may not reach its specified levels.
Workaround(s): Power cycle the device until the device starts up correctly. This issue has not been seen on devices when the VDD rise time from 0 V to 3.0 V is less than 100 us. However, meeting this condition does not guarantee that the issue will not occur.
Thanks,
John