component
CH340C
Public Made by Adomby adom
WCH Jiangsu Qin Heng USB Converters, SOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.md+4−4@@ -1,8 +1,8 @@ # CH340C -**Unknown** · USB Converters · SOP-16+**WCH Jiangsu Qin Heng** · USB Converters · SOP-16 -CH340C from Unknown, in a SOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.+CH340C from WCH Jiangsu Qin Heng, in a SOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD. ## Pinout @@ -29,7 +29,7 @@ CH340C from Unknown, in a SOP-16. Pinout and pin descriptions extracted from the | Parameter | Value | |---|---|-| Manufacturer | Unknown |+| Manufacturer | WCH Jiangsu Qin Heng | | Package | SOP-16 | | Category | Interface | | Pins | 16 |@@ -56,7 +56,7 @@ CH340C from Unknown, in a SOP-16. Pinout and pin descriptions extracted from the Data extracted from the manufacturer datasheet, not a distributor listing: -- **Datasheet:** [Unknown datasheet](docs/ch340c-datasheet.pdf) (10 pp, sha256 `ea6cde8472044256`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet:** [WCH Jiangsu Qin Heng datasheet](docs/ch340c-datasheet.pdf) (10 pp, sha256 `ea6cde8472044256`, retrieved 2026-08-17, tier: lcsc) - **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - **CAD:** KiCad official libraries (CC-BY-SA 4.0).
page.json+184−187@@ -1,193 +1,190 @@ {- "schema_version": 1,- "type": "component",- "slug": "ch340c",- "title": "CH340C",- "brief": "Unknown USB Converters, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.",- "version": "0.1.0",- "license": "CC-BY-SA-4.0",- "tags": [- "component",- "interface",- "ch340c"- ],- "component": {- "mpn": "CH340C",- "manufacturer": "Unknown",- "package": "SOP-16",- "pin_count": 16,- "category": "Interface",- "subcategory": "USB Converters",- "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2403131141_WCH-Jiangsu-Qin-Heng-CH340C_C7464026.pdf",- "parts": {- "symbol": "ch340c.kicad_sym",- "footprint": "ch340c.kicad_mod",- "model_3d": "ch340c.glb",- "model_3d_step": "ch340c.step",- "lbr": "ch340c.lbr"- },- "distributor_links": {},- "pins": [- {- "number": "1",- "name": "GND",- "type": "power_in",- "description": "Common ground reference. Connect directly to the USB bus ground."- },- {- "number": "2",- "name": "TXD",- "type": "output",- "description": "Serial data output (UART TX). Idles high on CH340C."- },- {- "number": "3",- "name": "RXD",- "type": "input",- "description": "Serial data input (UART RX) with internal software-controllable pull-up and pull-down."- },- {- "number": "4",- "name": "V3",- "type": "power_in",- "description": "Internal 3.3 V regulator node. In 5 V operation, connect a 0.1 uF decoupling capacitor to GND. In 3.3 V operation, tie V3 to VCC and to the external 3.3 V supply."- },- {- "number": "5",- "name": "UD+",- "type": "bidirectional",- "description": "USB D+ data line. Connect directly to the USB bus D+; do not add a series resistor (internal USB pull-up and transceiver are integrated)."- },- {- "number": "6",- "name": "UD-",- "type": "bidirectional",- "description": "USB D- data line. Connect directly to the USB bus D-; do not add a series resistor."- },- {- "number": "7",- "name": "NC",- "type": "unconnected",- "description": "No connect on CH340C. Must be left floating."- },- {- "number": "8",- "name": "OUT#/DTR#",- "type": "output",- "description": "MODEM general-purpose output signal (software defined, active low). On CH340C batches whose lot code starts with 4 and whose last three digits are greater than B40, adding a 4.7 kΩ pull-down converts this pin to a second DTR#."- },- {- "number": "9",- "name": "CTS#",- "type": "input",- "description": "MODEM Clear-To-Send handshake input, active low (or high when auxiliary RS-232 mode is enabled)."- },- {- "number": "10",- "name": "DSR#",- "type": "input",- "description": "MODEM Data Set Ready handshake input, active low (or high in auxiliary RS-232 mode)."- },- {- "number": "11",- "name": "RI#",- "type": "input",- "description": "MODEM Ring Indicator input, active low (or high in auxiliary RS-232 mode)."- },- {- "number": "12",- "name": "DCD#",- "type": "input",- "description": "MODEM Data Carrier Detect input, active low (or high in auxiliary RS-232 mode)."- },- {- "number": "13",- "name": "DTR#",- "type": "output",- "description": "MODEM Data Terminal Ready output, active low (or high in auxiliary RS-232 mode). Used for MCU DTR#-default-high one-key download flows."- },- {- "number": "14",- "name": "RTS#",- "type": "output",- "description": "MODEM Request To Send output, active low (or high in auxiliary RS-232 mode)."- },- {- "number": "15",- "name": "R232",- "type": "input",- "description": "Auxiliary RS-232 enable input, active high, with internal pull-down. When high, an inverter is inserted on RXD and the MODEM signal polarities invert. Sampled only once at power-on reset."- },- {- "number": "16",- "name": "VCC",- "type": "power_in",- "description": "Positive supply input. Requires a 0.1 uF decoupling capacitor to GND. Accepts 5 V (4.0-5.3 V) or 3.3 V (3.1-3.6 V, with V3 tied to VCC)."- }- ],- "provenance": {- "extractor": "ds2sf",- "datasheet": {- "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2403131141_WCH-Jiangsu-Qin-Heng-CH340C_C7464026.pdf",- "pages": 10,- "sha256": "ea6cde8472044256",- "source_tier": "lcsc"- },- "cad": "KiCad official (CC-BY-SA 4.0)",- "pins": {- "total": 16,- "described": 16,- "cites_pages": true,- "refuses_to_fabricate": true- }- },- "viewers": {- "symbol": "viewers/symbol.html",- "footprint": "viewers/footprint.html"- }- },- "metadata": {- "specs": {- "Manufacturer": "Unknown",- "Package": "SOP-16",- "Category": "Interface",- "Pins": "16"- }+ "schema_version": 1,+ "type": "component",+ "slug": "ch340c",+ "title": "CH340C",+ "brief": "WCH Jiangsu Qin Heng USB Converters, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "version": "0.1.0",+ "license": "CC-BY-SA-4.0",+ "tags": [+ "component",+ "interface",+ "ch340c"+ ],+ "component": {+ "mpn": "CH340C",+ "manufacturer": "WCH Jiangsu Qin Heng",+ "package": "SOP-16",+ "pin_count": 16,+ "category": "Interface",+ "subcategory": "USB Converters",+ "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2403131141_WCH-Jiangsu-Qin-Heng-CH340C_C7464026.pdf",+ "parts": {+ "symbol": "ch340c.kicad_sym",+ "footprint": "ch340c.kicad_mod",+ "model_3d": "ch340c.glb",+ "model_3d_step": "ch340c.step",+ "lbr": "ch340c.lbr" },- "sections": [- "hero",- "viewers",- "readme",- "breadcrumbs",- "info"- ],- "discovery_triggers": [- "ch340c"+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "GND",+ "type": "power_in",+ "description": "Common ground reference. Connect directly to the USB bus ground."+ },+ {+ "number": "2",+ "name": "TXD",+ "type": "output",+ "description": "Serial data output (UART TX). Idles high on CH340C."+ },+ {+ "number": "3",+ "name": "RXD",+ "type": "input",+ "description": "Serial data input (UART RX) with internal software-controllable pull-up and pull-down."+ },+ {+ "number": "4",+ "name": "V3",+ "type": "power_in",+ "description": "Internal 3.3 V regulator node. In 5 V operation, connect a 0.1 uF decoupling capacitor to GND. In 3.3 V operation, tie V3 to VCC and to the external 3.3 V supply."+ },+ {+ "number": "5",+ "name": "UD+",+ "type": "bidirectional",+ "description": "USB D+ data line. Connect directly to the USB bus D+; do not add a series resistor (internal USB pull-up and transceiver are integrated)."+ },+ {+ "number": "6",+ "name": "UD-",+ "type": "bidirectional",+ "description": "USB D- data line. Connect directly to the USB bus D-; do not add a series resistor."+ },+ {+ "number": "7",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect on CH340C. Must be left floating."+ },+ {+ "number": "8",+ "name": "OUT#/DTR#",+ "type": "output",+ "description": "MODEM general-purpose output signal (software defined, active low). On CH340C batches whose lot code starts with 4 and whose last three digits are greater than B40, adding a 4.7 k\u03a9 pull-down converts this pin to a second DTR#."+ },+ {+ "number": "9",+ "name": "CTS#",+ "type": "input",+ "description": "MODEM Clear-To-Send handshake input, active low (or high when auxiliary RS-232 mode is enabled)."+ },+ {+ "number": "10",+ "name": "DSR#",+ "type": "input",+ "description": "MODEM Data Set Ready handshake input, active low (or high in auxiliary RS-232 mode)."+ },+ {+ "number": "11",+ "name": "RI#",+ "type": "input",+ "description": "MODEM Ring Indicator input, active low (or high in auxiliary RS-232 mode)."+ },+ {+ "number": "12",+ "name": "DCD#",+ "type": "input",+ "description": "MODEM Data Carrier Detect input, active low (or high in auxiliary RS-232 mode)."+ },+ {+ "number": "13",+ "name": "DTR#",+ "type": "output",+ "description": "MODEM Data Terminal Ready output, active low (or high in auxiliary RS-232 mode). Used for MCU DTR#-default-high one-key download flows."+ },+ {+ "number": "14",+ "name": "RTS#",+ "type": "output",+ "description": "MODEM Request To Send output, active low (or high in auxiliary RS-232 mode)."+ },+ {+ "number": "15",+ "name": "R232",+ "type": "input",+ "description": "Auxiliary RS-232 enable input, active high, with internal pull-down. When high, an inverter is inserted on RXD and the MODEM signal polarities invert. Sampled only once at power-on reset."+ },+ {+ "number": "16",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply input. Requires a 0.1 uF decoupling capacitor to GND. Accepts 5 V (4.0-5.3 V) or 3.3 V (3.1-3.6 V, with V3 tied to VCC)."+ } ],- "discovery_pitch": "CH340C (Unknown) component page with datasheet-verified CAD.",- "author": {- "name": "Ray",- "email": "[email protected]"+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2403131141_WCH-Jiangsu-Qin-Heng-CH340C_C7464026.pdf",+ "pages": 10,+ "sha256": "ea6cde8472044256",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 16,+ "described": 16,+ "cites_pages": true,+ "refuses_to_fabricate": true+ } },- "dependencies": {},- "hero": {- "type": "image",- "path": "docs/hero.png"- },- "files": [- "page.json",- "README.md",- "ch340c.kicad_sym",- "ch340c.kicad_mod",- "ch340c.glb",- "ch340c.step",- "ch340c.lbr",- "docs/hero.png",- "docs/ch340c-datasheet.pdf",- "viewers/symbol.html",- "viewers/footprint.html"- ],- "visibility": {- "public": true+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Manufacturer": "Unknown",+ "Package": "SOP-16",+ "Category": "Interface",+ "Pins": "16" }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "ch340c"+ ],+ "discovery_pitch": "CH340C (Unknown) component page with datasheet-verified CAD.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ },+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "ch340c.kicad_sym",+ "ch340c.kicad_mod",+ "ch340c.glb",+ "ch340c.step",+ "ch340c.lbr",+ "docs/hero.png",+ "docs/ch340c-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ] }