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Update design document.md

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Ghassan Yusuf 2026-03-26 23:28:44 +03:00
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design document.md
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@ -267,8 +267,4 @@ This is a **functional BOM**; the designer may substitute functionally equivalen
| USB_PROT1 | USB‑line protection | USB‑ESD array / 5‑V clamp | Protects D‑/D+ and VBUS | | USB_PROT1 | USB‑line protection | USB‑ESD array / 5‑V clamp | Protects D‑/D+ and VBUS |
| VIN_PROT1 | External input protection | Wide‑input buck (e.g., LM2576‑style or similar) plus TVS | Steps 4–12 V down to safe rail | | VIN_PROT1 | External input protection | Wide‑input buck (e.g., LM2576‑style or similar) plus TVS | Steps 4–12 V down to safe rail |
| OLED1 | OLED display connector | 4‑pin header / footprint | 3.3 V, GND, SDA, SCL | | OLED1 | OLED display connector | 4‑pin header / footprint | 3.3 V, GND, SDA, SCL |
| CRYST1 | 40 MHz / 32 kHz crystals | 40 MHz + 32.768 kHz (if required) | As per ESP32‑S3 / RTC requirements | | CRYST1 | 40 MHz / 32 kHz crystals | 40 MHz + 32.768 kHz (if required) | As per ESP32‑S3 / RTC requirements |
***
You can now save this as `wearable_esp32s3_spec.md` and hand it directly to your PCB designer; they can use the section headings and BOM table as a formal reference.