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USB to TTL based on CH340N

Overview

1. Suitable for 3.3V or 5V power supply microcontroller system (RX is connected to the microcontroller RXD, TX is connected to the microcontroller TXD, PWR is connected to the power input of the microcontroller, GND is connected to the GND of the microcontroller, and the jumper cap wiring is as shown)

2. Pay attention to the cold start of the STC microcontroller , STM32 boot mode boot

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-05-06 16:18:29

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