diparoba5 / ESP32-S3-WROOM-1 Reference Design 9bff

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STM32F407VET6 Schematic Inquiry

flux

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Looking for "Recommended power supply connections, VDD VDDA VBAT VCAP decoupling capacitors and placement guidance." in en.DM00037051.pdf

Looking for "Clock source recommendations for HSE LSE oscillator crystal and load capacitors." in en.DM00037051.pdf

Looking for "Debug interface SWD/JTAG pins and recommended external connection." in en.DM00037051.pdf

Looking for "Boot configuration BOOT0 BOOT1 recommended hardware strapping." in en.DM00037051.pdf

Looking for "Reset circuit, NRST pin recommendations, pull-up or capacitor requirements." in en.DM00037051.pdf

Looking for "USB FS interface connection requirements including VBUS, D+, D-, and any external components." in en.DM00037051.pdf

Considering reference design material.

Dưới đây là thiết kế tham khảo đầy đủ cho STM32F407VET6, bám theo datasheet chính thức của ST và khuyến nghị phần cứng cho dòng STM32F4.
1) Khối nguồn bắt buộc Nguồn số
  • Cấp 3.3 V vào tất cả chân VDD
  • Nối tất cả chân VSS xuống GND
  • Mỗi cặp VDD/VSS cần một Generic Capacitor 100 nF đặt sát chân nguồn
  • Ngoài ra thêm một Generic Capacitor 4.7 µF trên rail VDD gần MCU
Nguồn analog
  • VDDA = VDD
  • VSSA = VSS
  • Trên nhánh VDDA đặt:
    • 1 x Generic Capacitor 1 µF
    • 1 x Generic Capacitor 10 nF
  • Nếu dùng VREF+ riêng, cũng lọc tương tự bằng:
    • 1 x Generic Capacitor 1 µF
    • 1 x Generic Capacitor 10 nF
VCAP
  • VCAP_1: 1 x Generic Capacitor 2.2 µF ceramic
  • VCAP_2: 1 x Generic Capacitor 2.2 µF ceramic
  • Hai tụ này là bắt buộc khi dùng regulator nội của chip
  • ESR yêu cầu: < 2 Ω
VBAT
  • Nếu dùng RTC/backup domain:
    • nối VBAT tới pin coin cell hoặc rail backup 1.65 V đến 3.6 V
  • Nếu không dùng backup:
    • thường nối VBAT về 3.3 V
2) Mạch reset
  • Chân NRST có pull-up yếu nội, nhưng thiết kế tham khảo vẫn nên thêm:
    • 1 x Generic Capacitor 100 nF từ NRST xuống GND
  • Thực tế nên thêm:
    • 1 x Generic Resistor 10 kΩ kéo NRST lên 3.3 V
    • 1 x Push Button để kéo NRST xuống GND khi reset tay
3) Boot mode Khuyến nghị mặc định
  • BOOT0:
    • 1 x Generic Resistor 10 kΩ kéo xuống GND
    • 1 x Jumper hoặc nút để kéo lên 3.3 V khi cần bootloader
  • PB2 / BOOT1:
    • thường kéo xuống GND bằng 1 x Generic Resistor 10 kΩ nếu bạn muốn phần cứng ổn định

Bảng cấu hình nên dùng

Chế độBOOT0BOOT1
Chạy firmware người dùng00
Bootloader hệ thống1x
4) Clock HSE
  • HSE hỗ trợ 4 MHz đến 26 MHz
  • Cấu hình phổ biến:
    • 1 x HSE Crystal 8 MHz
    • 2 x Generic Capacitor theo tải của crystal, thường trong vùng 5 pF đến 25 pF
  • Đặt crystal và tụ rất sát chân OSC_IN / OSC_OUT
LSE
  • Nếu cần RTC chính xác:
    • 1 x LSE Crystal 32.768 kHz
    • 2 x Generic Capacitor theo tải crystal
  • Nếu không dùng RTC, có thể bỏ
5) SWD debug / nạp chương trình
Nên đưa ra đầu cắm debug các tín hiệu sau:
  • PA13 = SWDIO
  • PA14 = SWCLK
  • NRST
  • 3.3 V
  • GND
  • tùy chọn: PB3 = SWO
Dùng 1 đầu cắm như:
  • SWD Header
6) USB FS
Nếu bạn muốn nạp/chạy USB Device qua FS:
  • PA11 = USB_DM
  • PA12 = USB_DP
  • PA9 = VBUS sense
  • Với cổng:
    • USB Micro-B Connector
    • hoặc USB-C Connector
Khuyến nghị thêm:
  • ESD Diode cho D+ / D-
  • Nếu dùng USB-C chỉ cho USB 2.0 device:
    • 2 x Generic Resistor 5.1 kΩ trên CC1 và CC2 xuống GND
7) Các chân hệ thống nên đưa ra ngoài
Nên chừa header/test pad cho:
  • USART1: PA9 / PA10
  • USART3: PB10 / PB11 hoặc PC10 / PC11
  • I2C
  • SPI
  • các GPIO chính
  • VBAT, NRST, BOOT0
Có thể dùng:
  • Pin Header
8) BOM tối thiểu cho reference design đầy đủ

Phần bắt buộc

Hạng mụcSố lượng gợi ý
STM32F407VET61
Generic Capacitor 100 nF cho VDDtheo số cặp VDD/VSS
Generic Capacitor 4.7 µF bulk1
Generic Capacitor 2.2 µF cho VCAP2
Generic Capacitor 1 µF cho VDDA/VREF1-2
Generic Capacitor 10 nF cho VDDA/VREF1-2
Generic Resistor 10 kΩ cho NRST1
Generic Capacitor 100 nF cho NRST1
Generic Resistor 10 kΩ cho BOOT01
Push Button reset1
Push Button boot1
SWD Header1
HSE Crystal1
LSE Crystaltùy chọn
USB Connectortùy chọn
9) Layout PCB cần giữ đúng
  • Tất cả Generic Capacitor decoupling đặt sát chân nguồn
  • Hai Generic Capacitor VCAP đặt sát VCAP_1 / VCAP_2
  • HSE Crystal và LSE Crystal đặt sát chân dao động, trace ngắn và đối xứng
  • Tách vùng analog quanh VDDA/VREF
  • USB D+ / D- đi song song, ngắn, tránh via không cần thiết
  • GND plane liên tục là tốt nhất
10) Cấu hình “an toàn” để bắt đầu
Nếu bạn chỉ muốn một reference design thực dụng, mình khuyên:
  • STM32F407VET6
  • HSE 8 MHz
  • LSE 32.768 kHz nếu dùng RTC
  • SWD 5 chân + NRST
  • USB FS device
  • BOOT0 nút nhấn + điện trở kéo xuống
  • NRST nút nhấn + RC reset
  • đầy đủ tụ VDD / VDDA / VCAP như trên
Vì bạn không có quyền sửa project hiện tại và project đang mở là reference design ESP32, cách tốt nhất là tạo một project mới cho STM32. Nếu muốn, mình có thể tạo ngay cho bạn:
  • link project mới trong Flux
  • với prompt dựng full STM32F407VET6 reference design
  • gồm nguồn, reset, boot, SWD, HSE/LSE, USB, header I/O
Nếu muốn, mình sẽ trả lời tiếp bằng một trong 2 dạng:
  • Sơ đồ nguyên lý khối đầy đủ bằng text
  • Link tạo project Flux mới cho STM32F407VET6
Link tạo project mới
Sơ đồ nguyên lý text
Thêm USB-C device
24 days
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Reviews

  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
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    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
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ESP32-S3-WROOM-1 Reference Design 9bff

ESP32-S3-WROOM-1 Reference Design 9bff thumbnail
This project is a reference project for ESP32-S3-WROOM-1 to develop your IoT ideas. The board has 3 LEDs, USB C for firmware, EN and BOOT buttons, and 2 IO connectors for development #IoT #WiFi #MCU #RF #ESP32 #project #referenceDesign #simple-embedded #espressif #template #reference-design

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