3309 Datasheet by Adafruit Industries LLC

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CP2104 Friend - USB to Serial Converter
PRODUCT ID: 3309
Descri
p
tion
Long gone are the days of parallel ports and serial ports. Now the USB port reigns supreme! But
USB is hard, and you just want to transfer your every-day serial data from a microcontroller to
computer. What now? Enter the Adafruit CP2104 Friend!
This is a high-quality CP2104 USB-Serial chip that can upload code at a blistering 2Mbit/s for fast
development time. It also has auto-reset so no noodling with pins and reset button pressings. The
CP2104 has better driver support than the CH340 and can do very high speeds, and variable
speeds without stability issues. Compared to the FT232RL and FT231X, the CP2104 has the same
capabilities or better, at a great price! It even has the RX/TX LEDs to help you debug your data,
the
y
'll blink when the chi
p
receives
/
transmits data.
Bydefault,we'vesetitupsothatitmatchesourFTDIcables.The6thpinisRTS,thepowerwireis+5Vand
thesignallevelsare3.3V(theyare5Vcompliant,andshouldworkinthevastmajorityof3.3Vand5Vsignal
systems).WorksexcellentlywithanyArduino,ESP8266,ESP32oranyothermicrocontrollerthatusesan
'FTDIport'forcommunicationsandupload.Youcanalsopurchasea6pinextensioncablefromus,which
willletyourearrangethewireorder.
There's also a full collection of all the modem control pins you may need on the side, in case you
need the DTR, RI, DSR, etc.
p
ins.
Each order comes with a fully assembled and tested board. We give you a right-angle socket
header and some male header strip. You can solder in the socket header on the edge to make it
'FTDI-like' or solder the male headers in to plug it into a breadboard and get access to all the pins.
ForMac,Linuxyouwon'tneedadriver.ForWindows,itwillautomaticallygrabthedriverfromWindows
Update.OryoucancheckoutSiLabsdriverpageforthelatestandgreatest.
Technical Details
Product Dimensions: 29.0mm x 18.0mm x 4.2mm / 1.1" x 0.7" x 0.2"
Product Weight: 2.0g / 0.1oz
EngineeredinNYCAdafruit®

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