In our project, we referred to the nRF52832 Application Reference Circuit Schematic for QFAA and QFAB QFN48 with internal LDO setup. However, during actual testing, we found that the system fails to function properly. Our firmware is developed based on NCS (nRF Connect SDK) 2.x, and the same code works correctly in designs following the Schematic QFAA and QFAB QFN48 with DC/DC regulator setup. To address the current situation, the following questions need clarification:
(1) Does the nRF52 require additional firmware configuration when using the internal LDO mode?
(2) We have attached the schematic diagram used in the design, with voltage values annotated for specific power pins. Please assist in verifying whether the chip’s power supply is currently operating within normal parameters.
(3) Description of Operational Observations:Initial programming via J-Link works correctly, but subsequent chip readback after programming triggers errors.We initially suspected potential crystal oscillator mismatch but confirmed that:The same batch of crystals is used in both DC/DC converter-configurated designs and the current setup.
Load capacitance adheres to the formula CL = 2Cp – 4pF, which functions normally in DC/DC designs.
Based on these verifications, we have ruled out crystal-related issues.
Error Log information：
2025-03-27T09:16:39.307Z DEBUG Sending event "programmer: running nrfutil device"
2025-03-27T09:16:49.828Z INFO Reading readback protection status for Application core
2025-03-27T09:16:49.828Z ERROR Failed "reading readback protection status for application core". Error: code: 1, description: Generic, message: Batch task protection-get failed, [Probe] Device error: A timeout occured while handling debug power: Timed out trying to power sys and debug region
2025-03-27T09:16:50.016Z ERROR Error: Failed with exit code 1.
One or more batch tasks failed:
- [Probe] Device error: A timeout occured while handling debug power: Timed out trying to power sys and debug region, code: Generic.
Message: Batch task protection-get failed, [Probe] Device error: A timeout occured while handling debug power: Timed out trying to power sys and debug region.
