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| Company | Trenz Electronic GmbH |
|---|---|
| AVN Number | AVN-20220701.0 |
| Title | AVN-202207010.0 TEB0911 RTC does not work |
| Subject | Information about RTC usage |
| Issue Date | 2022-07-01 |
Products Affected
Affected Product |
|---|
| TEB911-01-* |
| TEB911-02-* |
| TEB911-03-* |
| TEB911-04-* |
Notes
The HW wiring for the RTC is incorrect. This leads to the fact that the RTC initializes, but the time does not change.
RTC time can be tested with "hwclock --test"
Patch
Problem can be solved with following HW changes:
Remove Y2 and R47
Solder Resistor 0R (0603) on place of Y2;
Solder Resistor 3M9 (0402) on place of R47;
Solder Crystal SC12S-12.5PF20PPM above Resistor 3M9
Procedure to fix RTC issue
Production Shipment Schedule
We are issuing a new revision o TEB0911 and will make the necessary changes to future modules.
Method of Identification
- The module revision number is printed on the top side of the PCB:
Contact Information
If you have any questions related to this AVN, please contact Trenz Electronics Technical Support at
- forum.trenz-electronic.de
- wiki.trenz-electronic.de
- support%trenz-electronic.de (subject = AVN-22220429)
phone
national calls: 05741 3200-0
international calls: 0049 5741 3200-0
Disclaimer
Any projected dates in this AVN are based on the most current product information at the time this AVN is being issued, but they may change due to unforeseen circumstances. For the latest schedule and any other information, please contact your local Trenz Electronic sales office, technical support or local distributor.
This AVN follows JEDEC Standard J-STD-046.
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