#Cp2104 usb to uart driver mac os#
#Cp2104 usb to uart driver install#

Several vendors offer CH9102 parts for between 5 and 6 CNY, or about 78 to 93 US cents. Octopart has never heard of that chip apparently, so instead, I went to … The price is close to $4 per unit which does seem on the high side for a chip that is often found in $5 to $10 boards…ĬH9102F is listed in LCSC, but shown as “Discountinued” in LSCS, which probably just means there’s no stock. Since the decision to provide an alternative was the lower cost, let’s check CP2104 pricing info on LCSC…

#Cp2104 usb to uart driver mac os#

Both Windows and Mac OS support CH9102, and the chip probably works in Linux out of the box, but if not WCH “VCP” driver is also available. This may not matter much for ESP boards as the maximum baud rate I’ve seen was 1,500,000 bps with utilities such as esptool. So CH9102 might actually support higher bitrates. CH9102 – “Hardware full duplex serial UART interface, integrated transmit-receive buffer, supports communication baud rate varies from 50bps to 4Mbps.”.UART – “Baud rates: 300 bps to 2 Mbits”.“USB Specification 2.0 compliant full-speed (12 Mbps)”.I got the information from the table above on T-Display ESP32 Aliexpress page, but the datasheets have a bit more context: Back to the main contenders… According to LILYGO, one of the differences between CH9102F and CP2104 is the former is limited to 4 Mbps while the latter supports up to 12 Mbps data transfers. The good news is that CH9102F and CP2104 have basically both the same pinout albeit with some small differences that may or may not matter depending on the application, and come in a 4x4mm 24-QFN package (4x4mm) meaning if you run out of CP2104 chips, CH9102F can be used as an alternative, and should be a drop-in replacement.ĬH9102X is pretty similar to CH9102F but offered in a 5x5mm 28-QFN package with extra GPIOs.

#Cp2104 usb to uart driver install#

If needed, install an appropriate Silicon Labs CP210x USB to UART Bridge driver on the workstation used to connect with the system. I had never heard about CH9102 chips before (CH9102F and CH9102X), so I decided to investigate a bit more by checking out both CH9102 and CP2104 datasheets. A Silicon Labs CP210x USB-to-UART Bridge driver is used to provide access to the console, which is exposed via the USB Mini-b (5-pin) port on the appliance. I’ve just mentioned Silabs CP2104 USB to UART chip price had increased, and indicated WCH CH9102F chip could be used as an alternative instead in a post about LILYGO T-Display boards.