component
MS51FB9AE
Public Made by Adomby adom
Nuvoton Tech Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "ms51fb9ae",
"title": "MS51FB9AE",
"brief": "Nuvoton Tech Microcontrollers (MCU/MPU/SOC), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"embedded processors & controllers",
"ms51fb9ae",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "MS51FB9AE",
"manufacturer": "Nuvoton Tech",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883751598231552",
"parts": {
"symbol": "ms51fb9ae.kicad_sym",
"footprint": "ms51fb9ae.kicad_mod",
"model_3d": "ms51fb9ae-hero.glb",
"model_3d_plain": "ms51fb9ae.glb",
"model_3d_step": "ms51fb9ae-etched.step",
"model_3d_step_plain": "ms51fb9ae.step",
"lbr": "ms51fb9ae.lbr"
},
"distributor_links": {
"lcsc": "C408539",
"digikey": "816-MS51FB9AE-ND",
"mouser": "503-MS51FB9AE"
},
"distributor_check": {
"checked_at": "2026-10-09T16:43:26Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "816-MS51FB9AE-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "503-MS51FB9AE",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "P0.5",
"type": "bidirectional",
"description": "Port 0 bit 5 GPIO, multiplexed with PWM0_CH2, IC6, T0 (Timer/Counter 0 external count input or toggle output) and ADC_CH4."
},
{
"number": "2",
"name": "P0.6",
"type": "bidirectional",
"description": "Port 0 bit 6 GPIO, multiplexed with UART0_TXD (UART0 data transmit, swappable with P0.7 via UART0PX) and ADC_CH3."
},
{
"number": "3",
"name": "P0.7",
"type": "bidirectional",
"description": "Port 0 bit 7 GPIO, multiplexed with UART0_RXD (UART0 data receive, swappable with P0.6 via UART0PX) and ADC_CH2."
},
{
"number": "4",
"name": "P2.0 / nRESET",
"type": "input",
"description": "External reset pin is a Schmitt-trigger input with internal pull-up (about 45-60 kΩ at 5.5 V); it must be held low for at least 24 system clock cycles to generate a hardware reset, and P2.0 is available only when CONFIG0.2 (RPD) is 0."
},
{
"number": "5",
"name": "P3.0",
"type": "bidirectional",
"description": "Port 3 bit 0 GPIO (available when the internal oscillator is used), also external interrupt 0 input (INT0), OSCIN external clock input in ECLK mode, and ADC channel 1 input."
},
{
"number": "6",
"name": "P1.7",
"type": "bidirectional",
"description": "Port 1 bit 7 GPIO, also external interrupt 1 input (INT1, active low) and ADC channel 0 input."
},
{
"number": "7",
"name": "VSS",
"type": "power_in",
"description": "Power ground, the negative supply terminal; all VSS and VDD pins must be connected to the external supply."
},
{
"number": "8",
"name": "P1.6",
"type": "bidirectional",
"description": "Port 1 bit 6 GPIO, multiplexed with ICE_DAT (ICP programming data input/output), UART1_TXD (UART1 data transmit) and I2C0_SDA (I2C data, remappable via I2CPX)."
},
{
"number": "9",
"name": "VDD",
"type": "power_in",
"description": "Power supply positive terminal; operating voltage 2.4 V to 5.5 V with respect to VSS."
},
{
"number": "10",
"name": "P1.5 / PWM0_CH5 / IC7 / SPI0_SS",
"type": "bidirectional",
"description": "Port 1 bit 5 GPIO, multiplexed with PWM0_CH5, IC7 (Timer 2 input capture channel 7) and SPI0_SS (SPI slave select input)."
},
{
"number": "11",
"name": "P1.4 / PWM0_CH1 / I2C0_SDA / PWM0_BRAKE",
"type": "bidirectional",
"description": "Port 1 bit 4 GPIO, multiplexed with PWM0_CH1, I2C0_SDA (I2C data) and PWM0_BRAKE (PWM fault brake input)."
},
{
"number": "12",
"name": "P1.3",
"type": "bidirectional",
"description": "Port 1 bit 3 GPIO, multiplexed with I2C0_SCL (I2C clock, remappable via I2CPX) and STADC (external ADC start trigger, remappable via STADCPX)."
},
{
"number": "13",
"name": "P1.2 / PWM0_CH0 / IC0",
"type": "bidirectional",
"description": "Port 1 bit 2 GPIO, multiplexed with PWM0_CH0 (PWM output channel 0) and IC0 (Timer 2 input capture channel 0)."
},
{
"number": "14",
"name": "P1.1",
"type": "bidirectional",
"description": "Port 1 bit 1 GPIO, multiplexed with PWM0_CH1, IC1, ADC_CH7 and CLKO (system clock output)."
},
{
"number": "15",
"name": "P1.0 / PWM0_CH2 / IC2 / SPI0_CLK",
"type": "bidirectional",
"description": "Port 1 bit 0 GPIO, multiplexed with PWM0_CH2, IC2 (Timer 2 input capture channel 2) and SPI0_CLK (SPI clock)."
},
{
"number": "16",
"name": "P0.0",
"type": "bidirectional",
"description": "Port 0 bit 0 GPIO, multiplexed with PWM0_CH3, SPI0_MOSI (SPI master out / slave in), IC3 and T1 (Timer/Counter 1 external count input or toggle output)."
},
{
"number": "17",
"name": "P0.1 / PWM0_CH4 / IC4 / SPI0_MISO",
"type": "bidirectional",
"description": "Port 0 bit 1 GPIO, multiplexed with PWM0_CH4, IC4 and SPI0_MISO (SPI master in / slave out)."
},
{
"number": "18",
"name": "P0.2",
"type": "bidirectional",
"description": "Port 0 bit 2 GPIO, multiplexed with ICE_CLK (emulation and ICP programming clock input), UART1_RXD (UART1 data receive) and I2C0_SCL (I2C clock, remappable via I2CPX)."
},
{
"number": "19",
"name": "P0.3 / PWM0_CH5 / IC5 / ADC_CH6",
"type": "bidirectional",
"description": "Port 0 bit 3 GPIO, multiplexed with PWM0_CH5, IC5 and ADC_CH6 input."
},
{
"number": "20",
"name": "P0.4",
"type": "bidirectional",
"description": "Port 0 bit 4 GPIO, multiplexed with PWM0_CH3, IC3, ADC_CH5 input and STADC (external ADC start trigger)."
}
],
"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: The TSSOP-20 pin figure (Fig. 4.1-1) text layer is scrambled, so the pinout was taken from the TSSOP; Pin 4 is shared between P2.0 and nRESET. The type is set to input because the datasheet describes it; Source inconsistencies: the datasheet lists IC3 on both P0.0 and P0.4 and PWM0_CH3 on both P0.0 and "
],
"pages_sent": 47,
"cost_usd": 0.1485,
"at": "2026-10-09T16:42:02"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883751598231552",
"pages": 47,
"sha256": "29472fd0938c9bf9",
"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"
},
"models_3d": [
{
"file": "ms51fb9ae.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": "2026-10-09",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ms51fb9ae-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": "d0025e13bd44f1407dc0bb7628a8f2d094a5f384a0e1d10a3599a21d674d4f21",
"checked": "2026-10-09",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Nuvoton Tech",
"Package": "TSSOP-20",
"Category": "Embedded Processors & Controllers",
"Pins": "20"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"ms51fb9ae"
],
"discovery_pitch": "MS51FB9AE (Nuvoton Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"ms51fb9ae.kicad_sym",
"ms51fb9ae.kicad_mod",
"ms51fb9ae.glb",
"ms51fb9ae.step",
"ms51fb9ae.lbr",
"docs/hero.png",
"docs/ms51fb9ae-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"ms51fb9ae-hero.glb",
"ms51fb9ae-hero.overlay.json"
],
"visibility": {
"public": true
}
}