CH340G USB to Serial.zip_datasheet_CH341_USB编程

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/6253090e6caf5961927bedfa/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6253090e6caf5961927bedfa/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">The Data Sheet of CH340 (the first) 1 </div><div class="t m0 x2 h3 y2 ff2 fs1 fc0 sc0 ls1 ws1">USB to serial chip CH340 </div><div class="t m0 x3 h4 y3 ff1 fs2 fc0 sc0 ls3 ws3">English Data </div><div class="t m0 x4 h4 y4 ff1 fs2 fc0 sc0 ls4 ws4">Sheet Version: 2C </div><div class="t m0 x5 h4 y5 ff1 fs2 fc1 sc0 ls5 ws2">http://wch.cn</div><div class="t m0 x6 h4 y6 ff1 fs2 fc0 sc0 ls2 ws2"> </div><div class="t m0 x7 h4 y7 ff1 fs2 fc0 sc0 ls6 ws2">1 Introduction </div><div class="t m0 x8 h5 y8 ff3 fs3 fc0 sc0 ls7 ws2">CH34</div><div class="t m0 x9 h5 y9 ff3 fs3 fc0 sc0 ls7 ws2">0 is a USB bus conversion chip, it can realize USB to UART interface or USB to printer interface.</div><div class="t m0 x8 h5 ya ff3 fs3 fc0 sc0 lsa ws2">In serial UART mode, CH340 provides common MODEM liaison signal, used to expand UART interface of </div><div class="t m0 x7 h5 yb ff3 fs3 fc0 sc0 lsa ws2">computer or upgrade the common serial device to USB bus directly. For more information on USB conversion to </div><div class="t m0 x7 h5 yc ff3 fs3 fc0 sc0 lsa ws2">printer interface please refer to the manual CH340DS2. </div><div class="t m0 x1 h4 yd ff1 fs2 fc0 sc0 lsb ws14">2 Features </div><div class="t m0 x7 h6 ye ff4 fs4 fc0 sc0 ls2 ws2">● Full speed USB device interface, compatible with USB V2.0.</div><div class="t m0 x7 h6 yf ff4 fs4 fc0 sc1 ls2 ws2">● Em</div><div class="t m0 xa h6 y10 ff2 fs4 fc0 sc0 lsd ws16">ulate standard UART interface, used to upgrade the serial peripherals, or expand UART interface via</div><div class="t m0 xb h6 y11 ff2 fs4 fc0 sc0 lsf ws18">USB bus. </div><div class="t m0 x7 h6 y12 ff4 fs4 fc0 sc1 ls2 ws2">● O</div><div class="t m0 xc h6 y13 ff2 fs4 fc0 sc0 ls10 ws19">riginal serial applications are totally compatible, without any modification in Windows operation system.</div><div class="t m0 x7 h6 y14 ff4 fs4 fc0 sc1 ls2 ws2">● H</div><div class="t m0 xc h6 y15 ff2 fs4 fc0 sc0 ls13 ws1c">ardware full duplex serial UART interface, built-in transmit-receive buffer, supports communication baud</div><div class="t m0 xb h6 y16 ff2 fs4 fc0 sc0 ls14 ws1d">rate varies from 50bps to 2Mbps. </div><div class="t m0 x7 h6 y17 ff4 fs4 fc0 sc1 ls2 ws2">● Supports </div><div class="t m0 xd h6 y18 ff2 fs4 fc0 sc0 ls15 ws1e">common MODEM liaison signal RTS, DTR, DCD, RI, DSR and </div><div class="t m0 xe h6 y19 ff2 fs4 fc0 sc0 ls15 ws1e">CTS.</div><div class="t m0 x7 h6 y1a ff4 fs4 fc0 sc1 ls2 ws2">● Through ext</div><div class="t m0 xf h6 y1b ff2 fs4 fc0 sc0 ls16 ws1f">ernal level conversion chip provide further RS232, RS485, RS422 interface, etc.</div><div class="t m0 x7 h6 y1c ff4 fs4 fc0 sc1 ls2 ws2">● CH340R</div><div class="t m0 x10 h6 y1d ff2 fs4 fc0 sc0 ls18 ws21"> supports IrDA criterion SIR infrared communication, supports baud rate varies from 2400bps to</div><div class="t m0 xb h6 y1e ff2 fs4 fc0 sc0 ls1a ws2">115200bps. </div><div class="t m0 x7 h6 y1f ff4 fs4 fc0 sc1 ls2 ws2">● Software compatible with CH341, use driver of CH341 directly.</div><div class="t m0 x7 h6 y20 ff4 fs4 fc0 sc1 ls2 ws2">● Suppo</div><div class="t m0 x11 h6 y21 ff2 fs4 fc0 sc0 ls1c ws24">rt 5V and 3.3V power supply even 3V. </div><div class="t m0 x7 h6 y22 ff4 fs4 fc0 sc1 ls2 ws2">● CH</div><div class="t m0 xa h6 y23 ff2 fs4 fc0 sc0 ls1d ws25">340C, CH340E and CH340B have built-in crystal, no external crystal, CH340B also integrates</div><div class="t m0 xb h6 y24 ff2 fs4 fc0 sc0 ls1e ws26">EEPROM used to configure the serial number, etc. </div><div class="t m0 x7 h6 y25 ff4 fs4 fc0 sc1 ls2 ws2">● SOP-</div><div class="t m0 x12 h6 y26 ff2 fs4 fc0 sc0 ls1f ws27">16 and SSOP-20 and MSOP-10 lead-free RoHS compliant package.</div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6253090e6caf5961927bedfa/bg2.jpg"><div class="t m0 x7 h7 y27 ff5 fs5 fc0 sc0 ls21 ws29">The Data Sheet of CH340 (the first) 2 </div><div class="t m0 x7 h4 y28 ff1 fs2 fc0 sc0 ls22 ws2a">3 Package </div><div class="t m0 x13 h8 y29 ff2 fs4 fc0 sc0 ls23 ws15">Package shape Width of plastic Pitch of Pin Instruction of package Ordering type</div><div class="t m0 xc h8 y2a ff2 fs4 fc0 sc0 ls20 ws2">SOP-16 3.9mm 150mil 1.27mm 50mil Small outline package of 16-pin CH340G </div><div class="t m0 xc h8 y2b ff2 fs4 fc0 sc0 ls20 ws2">SOP-16 3.9mm 150mil 1.27mm 50mil Small outline package of 16-pin CH340C </div><div class="t m0 xc h8 y2c ff2 fs4 fc0 sc0 ls20 ws2">SOP-16 3.9mm 150mil 1.27mm 50mil Small outline package of 16-pin CH340B </div><div class="t m0 x14 h8 y2d ff2 fs4 fc0 sc0 ls27 ws2">MSOP-10 3.0mm 118mil 0.50mm 19.7mil Shrink small outline package of 10-pin CH340E </div><div class="t m0 x15 h8 y2e ff2 fs4 fc0 sc0 ls30 ws2">SSOP-20 5.30mm 209mil 0.65mm 25mil Shrink small outline package of 20-pin CH340T </div><div class="t m0 x15 h8 y2f ff2 fs4 fc0 sc0 ls30 ws2">SSOP-20 5.30mm 209mil 0.65mm 25mil Shrink small outline package of 20-pin CH340R </div><div class="t m0 x7 h5 y30 ff3 fs3 fc0 sc0 ls31 ws2">Model differences: </div><div class="t m0 x7 h5 y31 ff3 fs3 fc0 sc0 ls31 ws2">CH340C, CH340E and CH340B have built-in crystal, no</div><div class="t m0 x16 h5 y32 ff3 fs3 fc0 sc0 ls31 ws31"> external crystal; </div><div class="t m0 x7 h5 y33 ff3 fs3 fc0 sc0 ls31 ws2">CH340B also has built-in EEPROM used to configure the serial number,etc.Some functions can be customized. </div><div class="t m0 x7 h5 y34 ff3 fs3 fc0 sc0 ls31 ws2">CH340R provides reverse polarity TXD and MODEM signals. (No spot) </div><div class="t m0 x7 h4 y35 ff1 fs2 fc0 sc0 ls33 ws34">4. Pins</div><div class="t m0 x17 h6 y36 ff2 fs4 fc0 sc0 ls34 ws2">SSOP20 </div><div class="t m0 x18 h6 y37 ff2 fs4 fc0 sc0 ls35 ws35">Pin No.</div><div class="t m0 x19 h8 y38 ff2 fs6 fc0 sc0 ls2 ws2"> </div><div class="t m0 x1a h6 y36 ff2 fs4 fc0 sc0 ls2d ws2">SOP16 </div><div class="t m0 x1b h6 y37 ff2 fs4 fc0 sc0 ls34 ws36">Pin No.</div><div class="t m0 x1c h8 y38 ff2 fs6 fc0 sc0 ls2 ws2"> </div><div class="t m0 x1d h6 y36 ff2 fs4 fc0 sc0 ls36 ws2">MSOP10 </div><div class="t m0 x1e h6 y37 ff2 fs4 fc0 sc0 ls35 ws35">Pin No.</div><div class="t m0 x1f h8 y38 ff2 fs6 fc0 sc0 ls2 ws2"> </div><div class="t m0 x20 h8 y39 ff2 fs4 fc0 sc0 ls37 ws37">Pin Name Pin Type </div><div class="t m0 x21 h6 y36 ff2 fs4 fc0 sc0 ls35 ws35">Pin Description (description in bracket is only about </div><div class="t m0 x22 h6 y37 ff2 fs4 fc0 sc0 ls3a ws2">CH340R)</div><div class="t m0 x23 h8 y38 ff2 fs6 fc0 sc0 ls2 ws2"> </div><div class="t m0 x14 h8 y3a ff2 fs4 fc0 sc0 ls3b ws2">19 16 7 VCC POWER </div><div class="t m0 x24 h6 y3b ff2 fs4 fc0 sc0 ls14 ws3a">Positive power input port, requires an external 0.1uF power</div><div class="t m0 x25 h6 y3c ff2 fs4 fc0 sc0 ls3e ws3b">decoupling capacitor</div><div class="t m0 x26 h8 y3d ff2 fs6 fc0 sc0 ls2 ws2"> </div><div class="t m0 x27 h8 y3e ff2 fs4 fc0 sc0 ls2 ws2">8 1 3 GND POWER Public ground, ground connection for USB </div><div class="t m0 x27 h8 y3f ff2 fs4 fc0 sc0 ls2 ws2">5 4 NONE V3 POWER </div><div class="t m0 x28 h6 y40 ff2 fs4 fc0 sc0 ls40 ws3d">Connect to VCC to input external power when 3.3V power</div><div class="t m0 x29 h6 y41 ff2 fs4 fc0 sc0 ls2c ws3e">supply, connect to 0.1uF decoupling capacitor when 5V </div><div class="t m0 x2a h6 y42 ff2 fs4 fc0 sc0 ls43 ws3f">power supply</div><div class="t m0 x2b h8 y43 ff2 fs6 fc0 sc0 ls2 ws2"> </div><div class="t m0 x2c h8 y44 ff2 fs4 fc0 sc0 ls26 ws2">XI IN </div><div class="t m0 x28 h6 y45 ff2 fs4 fc0 sc0 ls2c ws40">CH340T/R/G: Input of crystal oscillator, connect to crystal</div><div class="t m0 x2a h6 y46 ff2 fs4 fc0 sc0 ls45 ws41">and capacitor</div><div class="t m0 x2d h8 y47 ff2 fs6 fc0 sc0 ls2 ws2"> </div><div class="t m0 x2e h8 y48 ff2 fs4 fc0 sc0 ls46 ws2">NC. NONE CH340C: No Connection, must be suspended </div><div class="t m0 x27 h8 y49 ff2 fs4 fc0 sc0 ls2 ws2">9 7 NONE </div><div class="t m0 x2f h8 y4a ff2 fs4 fc0 sc0 ls17 ws2">RST# IN CH340B: Input of external reset, active low, built-in </div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>