RST Pin Functionality Overview
1:56
Project
Datasheet
Schematic
RST
Clarifying user request.
Interpreting the user's request.
Identifying intents and using tools.
Using the schematic tool.
Using Knowledge Base Tool.
Using Schematic Tool.
Looking for "EN pin description" in esp32-h2-wroom-03_datasheet_en.pdf
Looking for "EN pin function reset chip enable" in esp32-h2-wroom-03_datasheet_en.pdf
Looking for "EN pin electrical characteristics" in esp32-h2-wroom-03_datasheet_en.pdf
Looking for "EN input voltage threshold VIL VIH" in esp32-h2-wroom-03_datasheet_en.pdf
Looking for "EN pin internal pull-up or pull-down" in esp32-h2-wroom-03_datasheet_en.pdf
Looking for "EN pin recommended external circuit pull-up capacitor reset" in esp32-h2-wroom-03_datasheet_en.pdf
Looking for "EN pin leakage current or input current" in esp32-h2-wroom-03_datasheet_en.pdf
Looking for "EN pin absolute maximum ratings" in esp32-h2-wroom-03_datasheet_en.pdf
Clarifying the RST net pin.
You’re pointing at RST, which is a Net Portal (a named net), not a device with its own datasheet. In this project, RST ties to the ESP32 module’s enable/reset pin: U1 EN (a.k.a. CHIP_EN). Below are the EN/CHIP_EN pin details taken from the module datasheet.
Source: ESP32-H2-WROOM-03 Datasheet (Espressif) – Datasheet
EN / CHIP_EN (ESP32-H2-WROOM-03)
- Function
- High: chip enabled (powered up).
- Low: chip disabled (powered down).
- Do not leave floating.
- Pin type and direction
- Digital input (chip enable/reset).
- Input characteristics (DC, 3.3 V, 25 C)
- High-level input threshold (VIH): at least 0.75 * VDD1
- Low-level input threshold (VIL): at most 0.25 * VDD1
- Input leakage currents: IIH <= 50 nA, IIL <= 50 nA
- Default biasing: internally pulled up
- Recommended external network (from module datasheet)
- 10 kΩ pull-up to VDD33
- 1 µF capacitor from EN to GND
- Special considerations
- Keep EN’s RC network close to U1 to reduce noise coupling.
- Since EN controls full chip power-down, avoid long/noisy traces and ensure a solid pull-up so it cannot float.
- For reliable power-on reset behavior, follow the 10 kΩ + 1 µF recommendation above.
- General MCU reset best practice: include a pull-up on reset/enable lines; diagnose EMI or supply sags if you observe spurious resets.
If you’d like, I can add the recommended 10 kΩ pull-up and 1 µF capacitor to EN on U1.
Add EN reset network
Confirm RST net connections
Add reset button
Check EN thresholds
Add programming header
31 days
Ready.
U1
PS2
RST
ACL
12V
ACN
RELAY
Reviews
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Inspect
ESP32-H2 Relay Board
Controls
Properties
Availability & Pricing
| Distributor | Qty 1 | |
|---|---|---|
| Arrow | $5.30–$5.38 | |
| Digi-Key | $6.60–$6.96 | |
| LCSC | $4.22–$4.30 | |
| Mouser | $6.93 | |
| Verical | $5.60–$10.60 | |
Assets
- ESP32-H2 Relay Board.png
id=ESP32-H2 Relay Board
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