component
CH554G
Public Made by Adomby adom
WCH Jiangsu Qin Heng Microcontrollers (MCU/MPU/SOC), SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240
{
"slug": "ch554g",
"version": "0.1.0",
"type": "component",
"description": "WCH Jiangsu Qin Heng Microcontrollers (MCU/MPU/SOC), SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"ch554g",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"ch554g.kicad_sym",
"ch554g.kicad_mod",
"ch554g.glb",
"ch554g.step",
"ch554g.lbr",
"docs/hero.png",
"docs/ch554g-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"ch554g-hero.glb",
"ch554g-hero.overlay.json",
"ch554g-etched.glb"
],
"component": {
"mpn": "CH554G",
"manufacturer": "WCH Jiangsu Qin Heng",
"package": "SOP-16",
"pin_count": 16,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588882226692173824",
"parts": {
"symbol": "ch554g.kicad_sym",
"footprint": "ch554g.kicad_mod",
"model_3d": "ch554g-hero.glb",
"model_3d_plain": "ch554g-etched.glb",
"model_3d_step": "ch554g-etched.step",
"model_3d_step_plain": "ch554g.step",
"lbr": "ch554g.lbr"
},
"distributor_links": {
"lcsc": "C114295"
},
"distributor_check": {
"checked_at": "2026-10-18T23:27:08Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "P3.2",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions TXD1_ (UART1 transmit, remapped), INT0 external interrupt 0 input, VBUS1 USB Type-C bus-voltage detect input and AIN3 ADC/comparator input channel 3."
},
{
"number": "2",
"name": "P1.4",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions T2_/CAP1_ (Timer2 remapped), SCS SPI0 chip-select, TIN2 touch-key input, UCC1 USB Type-C configuration channel and AIN1 ADC input; an analog input pin must be set to high-impedance input or open-drain output high with pull-up disabled."
},
{
"number": "3",
"name": "P1.5",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions MOSI (SPI0), PWM1 output, TIN3 touch-key input, UCC2 USB Type-C configuration channel and AIN2 ADC input; analog use requires high-impedance or open-drain high input configuration."
},
{
"number": "4",
"name": "P1.6",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions MISO (SPI0), RXD1 (UART1 receive) and TIN4 touch-key input; it is also the programming MISO pin when ISP/in-board programming is used."
},
{
"number": "5",
"name": "P1.7",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions SCK (SPI0 clock), TXD1 (UART1 transmit) and TIN5 touch-key input; it is also the programming SCK pin when in-board programming is used."
},
{
"number": "6",
"name": "RST",
"type": "input",
"description": "External reset input with an internal pull-down resistor; it can serve as a manual reset input only when the En_RST_RESET configuration bit is enabled."
},
{
"number": "7",
"name": "P3.1",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions TXD (UART0 transmit, default) and PWM2_ (PWM2 output, remapped); the PWM2 function takes priority over TXD when both are enabled."
},
{
"number": "8",
"name": "P3.0",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions RXD (UART0 receive, default) and PWM1_ (PWM1 output, remapped)."
},
{
"number": "9",
"name": "P1.1",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions T2EX/CAP2 (Timer2 external reload/capture input), TIN1 touch-key input, VBUS2 USB Type-C bus-voltage detect input and AIN0 ADC input channel 0."
},
{
"number": "10",
"name": "P3.3",
"type": "bidirectional",
"description": "General-purpose I/O with alternate function INT1, the external interrupt 1 input."
},
{
"number": "11",
"name": "P3.4",
"type": "bidirectional",
"description": "General-purpose I/O with alternate functions PWM2 output, RXD1_ (UART1 receive, remapped) and T0 (Timer0 external input)."
},
{
"number": "12",
"name": "P3.6",
"type": "bidirectional",
"description": "General-purpose I/O and USB D+ signal UDP; P3.6 and P3.7 use V33 as I/O supply so their high level cannot exceed V33 (not 5 V tolerant), and no series resistor may be placed on the USB signal when used for USB."
},
{
"number": "13",
"name": "P3.7",
"type": "bidirectional",
"description": "General-purpose I/O and USB D- signal UDM; like P3.6 it uses V33 as I/O supply so its high level is limited to V33, and no series resistor may be placed on the USB signal when used for USB."
},
{
"number": "14",
"name": "GND",
"type": "power_in",
"description": "Common ground (VSS) for the device; the package bottom ground connection on the SOP16 is this pin."
},
{
"number": "15",
"name": "VCC",
"type": "power_in",
"description": "Power supply input (VDD) that requires an external 0.1 uF decoupling capacitor to GND."
},
{
"number": "16",
"name": "V33",
"type": "power_out",
"description": "Internal USB power regulator output and internal USB power input: connect the external supply here when the supply is below 3.6 V, or add an external 0.1 uF decoupling capacitor when the supply is above 3.6 V."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pin numbering taken from the SOP16 column of the section 4 pin table (page 3), which the datasheet t; Four GPIOs in the full datasheet have no SOP16 pin and are omitted from the output: P1.0 (SOP16 '-'); Pin 16 V33 type is ambiguous: the datasheet describes it as both the regulator output and the USB po"
],
"pages_sent": 51,
"cost_usd": 0.3102,
"at": "2026-10-18T23:24:38"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588882226692173824",
"pages": 57,
"sha256": "9b21d66e1b11018b",
"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"
},
"models_3d": [
{
"file": "ch554g.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.0,
9.9,
1.75
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ch554g-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.0,
9.9,
1.75
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "7355dab99f71fa0f436aa2b2025516243a2bdd16045088e5d85c42c83c08bbc7",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}