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FAQ › Flashing & Firmware › ESP32 Clock Speed: Frequency, rwdt, u2rxd
// clock · faq ESP32 Clock Speed: Frequency, rwdt, u2rxd Filed under: ESP32 · Clock · Updated August 2026 The ESP32's clock is the answer to half your timing mysteries — and the cause of the other half. How Precise Is ESP32 Clock? Typical crystal spec is ±20 ppm — about 1.5-2 seconds of dr
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