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CH9101R on a board, in 3D

CH9101R

WCH (Nanjing Qinheng Microelectronics)

Extended
DatasheetJLCPCBLCSCwch/CH9101R
Category
USB Converters
Package
QSOP-16-150mil
Pins
16

Overview

The CH9101R is a USB Converter made by WCH (Nanjing Qinheng Microelectronics) in a QSOP-16-150mil package with 16 pins.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH9101R, from EasyEDA) and its footprint (Package_SO:QSOP-16_3.9x4.9mm_P0.635mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C5187520). 1 open-source board in 1 repository on GitHub use it.

Symbol

TXD1RTS2VIO3RXD4GND5CTS6TXS/DSR7UD+8UD-9V310RESET#11VDD512GND13RXS/RI14TNOW/DCD15SUSPEND/DTR16
EasyEDA_Cloud:CH9101RFrom EasyEDA

Footprint

12345678910111213141516
Package_SO:QSOP-16_3.9x4.9mm_P0.635mmFrom KiCad's library

Parameters

8
Applications Function
USB to UART
Current - Supply
15mA
Data Rate
3Mbps
Features
Programmable baud rate；Wake-up function；Built-in clock generator；Hardware flow control support；Low-power mode；Power-on reset
Operating Temperature
-40℃~+85℃
Quiescent Supply Current
160uA
USB Protocol
USB 2.0
Voltage - Supply
3.3V；5V

Order codes

1

Pinout

16
The pins of the CH9101R
PinNameType
1TXDUnspecified
2RTSUnspecified
3VIOUnspecified
4RXDUnspecified
5GNDUnspecified
6CTSUnspecified
7TXS/DSRUnspecified
8UD+Unspecified
9UD-Unspecified
10V3Unspecified
11RESET#Unspecified
12VDD5Unspecified
13GNDUnspecified
14RXS/RIUnspecified
15TNOW/DCDUnspecified
16SUSPEND/DTRUnspecified

Open-source boards using it

All 1
  • 2 layers53.3 × 68.6 mmArduino uno, the printed circuit board in 3D

    Arduino uno

    Chicken-Fried/Cave-Uno

    Modernized Arduino Uno R3 compatible board powered by Microchip ATmega328PB. Features driverless USB-C, 1.5A sync buck, ideal-diode OR-ing, dual I2C/SPI/UART, and LiDAR topographic artwork.

    85 parts

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/wch/CH9101R" title="CH9101R in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/wch/CH9101R.jpg" alt="CH9101R" width="1200" height="900">
A picture that opens the part, for a README
[![CH9101R](https://pcbkit.io/embed/parts/wch/CH9101R.jpg?size=s)](https://pcbkit.io/parts/wch/CH9101R)

Questions

Is there a KiCad symbol and footprint for the CH9101R?

Yes. The symbol is EasyEDA_Cloud:CH9101R and the footprint Package_SO:QSOP-16_3.9x4.9mm_P0.635mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH9101R?

QSOP-16-150mil, with 16 pins. Its footprint is drawn on this page.

Where is the CH9101R datasheet?

WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.

Where can I order the CH9101R?

JLCPCB lists it as part C5187520, with 0 in stock; the sellers' links on this page open their listings.

What can replace the CH9101R?

Parts like it in the library: the MIC2012-2ZQS TR by Microchip Technology, the MIC2070-1PCQS-TR by Microchip Technology, the MIC2072-1PCQS by Microchip Technology and the MIC2072-1PCQS-TR by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the CH9101R?

1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

4