component
CH452A
Public Made by Adomby adom
WCH Jiangsu Qin Heng Digital Tube Drivers, SOIC-28-300mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
page.json+246−8@@ -1,13 +1,256 @@ {+ "schema_version": 1,+ "type": "component", "slug": "ch452a",+ "title": "CH452A",+ "brief": "WCH Jiangsu Qin Heng Digital Tube Drivers, SOIC-28-300mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.", "version": "0.1.0",- "type": "component",- "description": "WCH Jiangsu Qin Heng Digital Tube Drivers, SOIC-28-300mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "license": "CC-BY-SA-4.0", "tags": [ "component", "led drivers", "ch452a" ],+ "component": {+ "mpn": "CH452A",+ "manufacturer": "WCH Jiangsu Qin Heng",+ "package": "SOIC-28-300mil",+ "pin_count": 28,+ "category": "LED Drivers",+ "subcategory": "Digital Tube Drivers",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618866980522766336",+ "parts": {+ "symbol": "ch452a.kicad_sym",+ "footprint": "ch452a.kicad_mod",+ "model_3d": "ch452a.glb",+ "model_3d_step": "ch452a.step",+ "lbr": "ch452a.lbr"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "DIG7",+ "type": "output",+ "description": "Word drive output 7 for LED nixie tube (active low, ~4x25 mA sink). Also used as column-scan output during keyboard scan. DIG6/DIG7 can be reused as GPO universal outputs."+ },+ {+ "number": "2",+ "name": "DIG6",+ "type": "output",+ "description": "Word drive output 6 for LED nixie tube (active low). Also used as column-scan output during keyboard scan and can be reused as GPO."+ },+ {+ "number": "3",+ "name": "DIG5",+ "type": "output",+ "description": "Word drive output 5 for LED nixie tube (active low). Also used as column-scan output during keyboard scan."+ },+ {+ "number": "4",+ "name": "DIG4",+ "type": "output",+ "description": "Word drive output 4 for LED nixie tube (active low). Also used as column-scan output during keyboard scan."+ },+ {+ "number": "5",+ "name": "DIG3",+ "type": "output",+ "description": "Word drive output 3 for LED nixie tube (active low). Also used as column-scan output during keyboard scan."+ },+ {+ "number": "6",+ "name": "DIG2",+ "type": "output",+ "description": "Word drive output 2 for LED nixie tube (active low). Also used as column-scan output during keyboard scan."+ },+ {+ "number": "7",+ "name": "DIG1",+ "type": "output",+ "description": "Word drive output 1 for LED nixie tube (active low). Also used as column-scan output during keyboard scan."+ },+ {+ "number": "8",+ "name": "DIG0",+ "type": "output",+ "description": "Word drive output 0 for LED nixie tube (active low). Also used as column-scan output during keyboard scan."+ },+ {+ "number": "9",+ "name": "GND",+ "type": "power_in",+ "description": "Common ground. Continuous current not less than 150 mA."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Common ground. Continuous current not less than 150 mA."+ },+ {+ "number": "11",+ "name": "NC/GPI",+ "type": "input",+ "description": "No connection or general-purpose input; state reported in bit 7 of the returned key code."+ },+ {+ "number": "12",+ "name": "RST",+ "type": "output",+ "description": "Power-on reset output, active high. Can be tied to the host MCU reset input."+ },+ {+ "number": "13",+ "name": "RST#",+ "type": "output",+ "description": "Power-on reset output, active low. Complementary to RST for MCUs needing active-low reset."+ },+ {+ "number": "14",+ "name": "H3L2",+ "type": "input",+ "description": "Serial interface mode select with built-in pull-up. High selects the 4-wire serial interface; low selects the 2-wire (I2C-like) serial interface."+ },+ {+ "number": "15",+ "name": "SEG0",+ "type": "bidirectional",+ "description": "Segment drive 0 (active high, ~20 mA source) for LED nixie tube segment A; also acts as keyboard scan input (active high) with built-in pull-down resistor."+ },+ {+ "number": "16",+ "name": "SEG1",+ "type": "bidirectional",+ "description": "Segment drive 1 (active high) for segment B; also keyboard scan input with built-in pull-down."+ },+ {+ "number": "17",+ "name": "SEG2",+ "type": "bidirectional",+ "description": "Segment drive 2 (active high) for segment C; also keyboard scan input with built-in pull-down."+ },+ {+ "number": "18",+ "name": "SEG3",+ "type": "bidirectional",+ "description": "Segment drive 3 (active high) for segment D; also keyboard scan input with built-in pull-down."+ },+ {+ "number": "19",+ "name": "SEG4",+ "type": "bidirectional",+ "description": "Segment drive 4 (active high) for segment E; also keyboard scan input with built-in pull-down."+ },+ {+ "number": "20",+ "name": "SEG5",+ "type": "bidirectional",+ "description": "Segment drive 5 (active high) for segment F; also keyboard scan input with built-in pull-down."+ },+ {+ "number": "21",+ "name": "SEG6",+ "type": "bidirectional",+ "description": "Segment drive 6 (active high) for segment G; also keyboard scan input with built-in pull-down."+ },+ {+ "number": "22",+ "name": "SEG7",+ "type": "bidirectional",+ "description": "Segment drive 7 (active high) for the decimal point of the LED nixie tube; also keyboard scan input with built-in pull-down."+ },+ {+ "number": "23",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive power supply, 3V-5V. Continuous current not less than 150 mA. Requires 0.1 uF ceramic and >=100 uF electrolytic decoupling capacitors close to the pin."+ },+ {+ "number": "24",+ "name": "DOUT/INT#",+ "type": "output",+ "description": "In 4-wire mode: serial data output DOUT (built-in pull-up, open-drain); also serves as keyboard interrupt output, active low. In 2-wire mode: interrupt output INT# (built-in pull-up, open-drain), keyboard interrupt active low."+ },+ {+ "number": "25",+ "name": "LOAD/ADDR",+ "type": "input",+ "description": "In 4-wire mode: serial data load strobe LOAD (built-in pull-up). In 2-wire mode: address selection ADDR (built-in pull-up) for parallel-connecting two CH452 chips on the same bus."+ },+ {+ "number": "26",+ "name": "DIN/SDA",+ "type": "bidirectional",+ "description": "In 4-wire mode: serial data input DIN (built-in pull-up). In 2-wire mode: serial data line SDA (semi-bidirectional, open-drain output plus input, built-in pull-up); I2C-compatible 400 kHz."+ },+ {+ "number": "27",+ "name": "DCLK/SCL",+ "type": "input",+ "description": "In 4-wire mode: serial data clock DCLK (built-in pull-up, up to 10 MHz shift / spec limit 2 MHz for cascade). In 2-wire mode: serial clock SCL (built-in pull-up, 400 kHz I2C-compatible)."+ },+ {+ "number": "28",+ "name": "RSTI",+ "type": "input",+ "description": "Manual reset input, active high, with built-in pull-down resistor. Drives the internal reset and the RST/RST# outputs."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618866980522766336",+ "pages": 30,+ "sha256": "9bca8400a8383cac",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 28,+ "described": 28,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Manufacturer": "WCH Jiangsu Qin Heng",+ "Package": "SOIC-28-300mil",+ "Category": "LED Drivers",+ "Pins": "28"+ }+ },+ "variants": [+ {+ "mpn": "CH452A",+ "kind": "packaging"+ },+ {+ "mpn": "CH452L",+ "kind": "unknown"+ }+ ],+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "ch452a"+ ],+ "discovery_pitch": "CH452A (WCH Jiangsu Qin Heng) component page with datasheet-verified CAD.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -25,10 +268,5 @@ "docs/ch452a-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }