SF32LB58x Hardware Design Guide — Design Review Checklist and References¶
Part of the SF32LB58x Hardware Design Guide
This page covers Sections 7-10: Design Review Checklist, Related Documents and References, Appendices, and Revision History. Return to PCB Layout Checklist.
7. Design Review Checklist¶
- Confirmed the co-packaged Flash/PSRAM combination of the selected model matches the product requirement
- PMU supply (PVDD1/PVDD2/BUCK/LDO) and all other power pins are within the Datasheet voltage ranges
- BUCK inductor meets 4.7 uH ± tolerance, DCR ≤ 0.4 Ω, Isat ≥ 500 mA
- 48 MHz and 32.768 kHz crystals meet the recommended specifications, with routing and keep-out zones satisfied
- RF trace is 50 Ω impedance, with the matching network placed close to the chip
- Storage boot configuration (MPI4/SD1/SD2) matches the Mode boot pin setting
- Display interface (MIPI-DSI/SPI-QSPI/MCU8080/DPI/JDI) trace impedance and length-matching requirements are satisfied (DSI 100 Ω differential, SDIO intra-group ≤6 mm)
- USB and SDIO differential trace impedance and length matching meet requirements
- SWD/6x UART debug pins and production test points are reserved
- BGA pad vias are centered, and the ground plane beneath the chip is fully connected
- Key component part numbers have been verified against the latest SiFli Approved Vendor List
- The review evidence pack includes stack-up/process capability, impedance, DRC, AVL, and focused layout screenshots
- Open schematic, layout, and manufacturing questions are closed or explicitly tracked before prototype release
8. Related Documents and References¶
Use the latest official documents when checking electrical limits, package data, pin multiplexing, software configuration, and component qualification.
The Schematic Checklist (Section 5.7) and PCB Layout Checklist (Section 6.18) reproduce the same SF32LB58x Schematic & PCB Checklist (V1.0, 2026-01-21) item by item, alongside the schematic and PCB layout guidance they check against.
9. Appendices¶
The appendices collect application and reference-design context. Use them as review aids after the main schematic and PCB rules in Sections 5 and 6 have been applied.
| Need | Start Here |
|---|---|
| Application context for a rich wearable or smart terminal | Appendix A: A Typical Smart Wearable or Smart Terminal |
| Schematic screenshots and circuit-level examples | Section 5 and the SF32LB58x hardware application note |
| PCB layout screenshots for BGA, HDI, RF, DSI, USB, SDIO, audio, and power | Section 6 and the SF32LB58x hardware application note |
Appendix A. A Typical Smart Wearable or Smart Terminal¶
A typical SF32LB58x wearable or smart-terminal design includes the MCU, PMIC, high-resolution display, touch controller, boot storage, external memory or eMMC, sensors, vibration motor, audio input/output, Bluetooth antenna, crystals, USB, debug access, and production test access. The BGA256 package and high-speed display/storage interfaces make HDI process selection part of the system architecture, not just a PCB-layout detail.
10. Revision History¶
| Version | Date | Note |
|---|---|---|
| 1.0 | 2026-07 | Updated SF32LB58x hardware design guide with schematic, PCB, validation, and production-review guidance |
| 0.0.1 | 1/2025 | Official Draft release of SF32LB58x-HW-Application |
10.1. Checklist Revision History¶
The item-by-item checklist in the Schematic Checklist and PCB Layout Checklist is versioned separately from the guide, following SiFli's own SF32LB58x Schematic & PCB Checklist workbook.
| No. | Version | Date | Release Notes |
|---|---|---|---|
| 1 | V1.0 | 2026-01-21 | Initial release of the Schematic & PCB Checklist document |