component
STC15W408AS-35I-TSSOP20
Public Made by Adomby adom
STC Micro Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
main
Ray
stc15w408as-35i-tssop20: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity bindin…
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{
"schema_version": 1,
"type": "component",
"slug": "stc15w408as-35i-tssop20",
"title": "STC15W408AS-35I-TSSOP20",
"brief": "STC Micro Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
"version": "0.2.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"mcu",
"stc15w408as-35i-tssop20"
],
"component": {
"mpn": "STC15W408AS-35I-TSSOP20",
"manufacturer": "STC Micro",
"package": "TSSOP-20",
"pin_count": 20,
"category": "MCU",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/caa5a792ca87f52d47a7cc948ca9d105.pdf",
"parts": {
"symbol": "stc15w408as-35i-tssop20.kicad_sym",
"footprint": "stc15w408as-35i-tssop20.kicad_mod",
"model_3d": "stc15w408as-35i-tssop20-etched.glb",
"model_3d_plain": "stc15w408as-35i-tssop20.glb",
"model_3d_step": "stc15w408as-35i-tssop20-etched.step",
"model_3d_step_plain": "stc15w408as-35i-tssop20.step",
"lbr": "stc15w408as-35i-tssop20.lbr"
},
"distributor_links": {
"lcsc": "C61940"
},
"pins": [
{
"number": "1",
"name": "P1.2/ADC2/SS/ECI/CMPO",
"type": "bidirectional",
"description": "Standard I/O PORT1[2]. Muxed with ADC input channel 2, SPI slave-select (SS), CCP/PCA external clock input (ECI), and analog comparator output (CMPO)."
},
{
"number": "2",
"name": "P1.3/ADC3/MOSI",
"type": "bidirectional",
"description": "Standard I/O PORT1[3]. Muxed with ADC input channel 3 and SPI master-out/slave-in (MOSI)."
},
{
"number": "3",
"name": "P1.4/ADC4/MISO",
"type": "bidirectional",
"description": "Standard I/O PORT1[4]. Muxed with ADC input channel 4 and SPI master-in/slave-out (MISO)."
},
{
"number": "4",
"name": "P1.5/ADC5/SCLK",
"type": "bidirectional",
"description": "Standard I/O PORT1[5]. Muxed with ADC input channel 5 and SPI clock (SCLK)."
},
{
"number": "5",
"name": "P1.6/ADC6/RxD_3/XTAL2/SysClkO_2",
"type": "bidirectional",
"description": "Standard I/O PORT1[6]. Muxed with ADC input channel 6, alternate UART receive (RxD_3), external-crystal output XTAL2, and secondary system-clock output (SysClkO_2 = SysClk/1, /2, or /4)."
},
{
"number": "6",
"name": "P1.7/ADC7/TxD_3/XTAL1",
"type": "bidirectional",
"description": "Standard I/O PORT1[7]. Muxed with ADC input channel 7, alternate UART transmit (TxD_3), and external-crystal input XTAL1 (also external-clock input when a clock source is fed directly)."
},
{
"number": "7",
"name": "P5.4/RST/SysClkO/CMP-",
"type": "bidirectional",
"description": "Standard I/O PORT5[4]. Muxed with the active-high external reset input (RST), system-clock output (SysClkO = SysClk/1, /2, or /4), and comparator negative input (CMP-, set to high-impedance input when used)."
},
{
"number": "8",
"name": "VCC",
"type": "power_in",
"description": "Positive supply rail, 2.4 V to 5.5 V."
},
{
"number": "9",
"name": "P5.5/CMP+",
"type": "bidirectional",
"description": "Standard I/O PORT5[5]. Muxed with comparator positive input (CMP+, set to high-impedance input when used)."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground / negative supply rail."
},
{
"number": "11",
"name": "P3.0/RxD/INT4/T2CLKO",
"type": "bidirectional",
"description": "Standard I/O PORT3[0]. Muxed with UART receive (RxD), external interrupt 4 (INT4, falling-edge only, power-down wake-up capable), and Timer 2 clock output (T2CLKO via INT_CLKO[2]/T2CLKO)."
},
{
"number": "12",
"name": "P3.1/TxD/T2",
"type": "bidirectional",
"description": "Standard I/O PORT3[1]. Muxed with UART transmit (TxD) and Timer/Counter 2 external input (T2)."
},
{
"number": "13",
"name": "P3.2/INT0",
"type": "bidirectional",
"description": "Standard I/O PORT3[2]. Muxed with external interrupt 0 (INT0). Rising- and falling-edge trigger both supported when IT0=0, falling-edge only when IT0=1. Power-down wake-up capable."
},
{
"number": "14",
"name": "P3.3/INT1",
"type": "bidirectional",
"description": "Standard I/O PORT3[3]. Muxed with external interrupt 1 (INT1). Rising- and falling-edge trigger both supported when IT1=0, falling-edge only when IT1=1. Power-down wake-up capable."
},
{
"number": "15",
"name": "P3.4/T0/ECI_2",
"type": "bidirectional",
"description": "Standard I/O PORT3[4]. Muxed with Timer/Counter 0 external input (T0) and CCP/PCA external pulse input alternate (ECI_2)."
},
{
"number": "16",
"name": "P3.5/T0CLKO/CCP0_2",
"type": "bidirectional",
"description": "Standard I/O PORT3[5]. Muxed with Timer 0 clock output (T0CLKO, enabled via INT_CLKO[0]) and CCP0 alternate mapping (CCP0_2, capture/PWM channel 0)."
},
{
"number": "17",
"name": "P3.6/INT2/RxD_2/CCP1_2",
"type": "bidirectional",
"description": "Standard I/O PORT3[6]. Muxed with external interrupt 2 (INT2, falling-edge only, power-down wake-up capable), alternate UART receive (RxD_2), and CCP1 alternate mapping (CCP1_2)."
},
{
"number": "18",
"name": "P3.7/INT3/TxD_2/CCP2/CCP2_2",
"type": "bidirectional",
"description": "Standard I/O PORT3[7]. Muxed with external interrupt 3 (INT3, falling-edge only, power-down wake-up capable), alternate UART transmit (TxD_2), and CCP2 default/alternate mapping (CCP2 and CCP2_2 capture/PWM channel 2)."
},
{
"number": "19",
"name": "P1.0/ADC0/CCP1",
"type": "bidirectional",
"description": "Standard I/O PORT1[0]. Muxed with ADC input channel 0 and CCP1 default mapping (capture/high-speed pulse output/PWM channel 1)."
},
{
"number": "20",
"name": "P1.1/ADC1/CCP0",
"type": "bidirectional",
"description": "Standard I/O PORT1[1]. Muxed with ADC input channel 1 and CCP0 default mapping (capture/high-speed pulse output/PWM channel 0)."
}
],
"provenance": {
"extractor": "ds2sf",
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/caa5a792ca87f52d47a7cc948ca9d105.pdf",
"pages": 1219,
"sha256": "cc8c299c891646e0",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"pin1": {
"pad": "1",
"at": [
-2.8625,
-2.925
],
"corner": "top-left",
"source": "silk-marker",
"derived_from": "TSSOP-20_4.4x6.5mm_P0.65mm@sha256:b7ca3a31dd45c122",
"mark": "drawn"
},
"models_3d": [
{
"file": "stc15w408as-35i-tssop20.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
6.5,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
"checked": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "stc15w408as-35i-tssop20-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
6.5,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "4acc3feda25dfaaeccaefba2cf077c7bbdac875f962ac3cfda6afdd1b036b699",
"checked": "2026-10-07",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "STC Micro",
"Package": "TSSOP-20",
"Category": "MCU",
"Pins": "20"
}
},
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"stc15w408as-35i-tssop20"
],
"discovery_pitch": "STC15W408AS-35I-TSSOP20 (STC Micro) component page with datasheet-verified CAD.",
"author": {
"name": "Ray"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"stc15w408as-35i-tssop20.kicad_sym",
"stc15w408as-35i-tssop20.kicad_mod",
"stc15w408as-35i-tssop20.glb",
"stc15w408as-35i-tssop20.step",
"stc15w408as-35i-tssop20-etched.step",
"stc15w408as-35i-tssop20.lbr",
"docs/hero.png",
"docs/stc15w408as-35i-tssop20-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html"
],
"visibility": {
"public": true
},
"variants": [
{
"mpn": "STC15W408AS-35I-TSSOP20",
"kind": "packaging"
},
{
"mpn": "STC15W408AS-35I-SOP20",
"kind": "unknown"
},
{
"mpn": "STC15W408AS-35I-DIP20",
"kind": "unknown"
},
{
"mpn": "STC15W408AS-35I-SOP16",
"kind": "unknown"
},
{
"mpn": "STC15W408AS-35I-DIP16",
"kind": "unknown"
},
{
"mpn": "STC15W408AS-35I-SOP28",
"kind": "unknown"
},
{
"mpn": "STC15W408AS-35I-TSSOP28",
"kind": "unknown"
},
{
"mpn": "STC15W408AS-35I-SKDIP28",
"kind": "unknown"
},
{
"mpn": "STC15W408AS-35I-QFN28",
"kind": "unknown"
}
],
"updated_at": "2026-09-25T08:28:27.905Z"
}