IC1 USB-to-UART Overview

hari341

hari341

Please explain what @IC1 does.

flux

IC1 is a CH340C USB-to-UART bridge. It converts the USB bus signals (VBUS, D+, D–) into TTL-level serial signals (TXD, RXD, RTS#, CTS#) so your ESP32 (and other MCU pins) can communicate over USB as a virtual COM port on a host PC. It’s powered directly from the USB 5 V supply (VBUS) and supports VDD at 5 V, 3.3 V, 2.5 V or 1.8 V.
Key functions (from the datasheet):
  • USB full-speed (12 Mb/s) interface to the host.
  • TTL-level UART interface with hardware flow-control support.
  • On-chip clock generation (no external crystal needed for CH340C).
  • Enables firmware upload, serial logging, and USB-based communication for the microcontroller.
Datasheet: PDF
Request decoupling spec
Add decoupling cap
ESD protection parts
Cap placement guidelines
USB pull-up resistor

No files yet

Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    WiFi Camera Reference Design-removebg-preview.png

    WiFi Camera Reference Design-removebg-preview.png

    WiFi Camera Reference Design-removebg-previewThumbnail

    WiFi Camera Reference Design

    WiFi Camera Reference Design thumbnail
    This project uses an ESP32 microcontroller and OV2640 camera to create a WiFi-enabled digital camera. It uses AMS1117 voltage regulators to provide regulated power, a CH340C for USB communication, and includes capacitors and resistors for circuit balance. Ideal for IoT and edge computing tasks. #referenceDesign #project #ESP32 #ESP32WROVER #RF #WIFI #MCU #referenceDesign #edge-computing #edgeComputing #espressif #template #reference-design

    Properties

    creativecommons.org/licenses/by/4.0/

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $0.07–$0.16

    Digi-Key

    $1.53–$10.60

    LCSC

    $1.01–$1.86

    Mouser

    $10.76

    TME

    $0.00

    Verical

    $1.54–$2.13

    Controls