component
AT89S52-24AUR
Public Made by Adomby adom
Microchip Tech MICROCHIP, TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "at89s52-24aur",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech MICROCHIP, TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"at89s52-24aur",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"at89s52-24aur.kicad_sym",
"at89s52-24aur.kicad_mod",
"at89s52-24aur.glb",
"at89s52-24aur.step",
"at89s52-24aur.lbr",
"docs/hero.png",
"docs/at89s52-24aur-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"at89s52-24aur-hero.glb",
"at89s52-24aur-hero.overlay.json",
"at89s52-24aur-etched.glb"
],
"component": {
"mpn": "AT89S52-24AUR",
"manufacturer": "Microchip Tech",
"package": "TQFP-44(10x10)",
"pin_count": 44,
"category": "Embedded Processors & Controllers",
"subcategory": "MICROCHIP",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/19b9f9ffeed42936ced400ccb208d473.pdf",
"parts": {
"symbol": "at89s52-24aur.kicad_sym",
"footprint": "at89s52-24aur.kicad_mod",
"model_3d": "at89s52-24aur-hero.glb",
"model_3d_plain": "at89s52-24aur-etched.glb",
"model_3d_step": "at89s52-24aur-etched.step",
"model_3d_step_plain": "at89s52-24aur.step",
"lbr": "at89s52-24aur.lbr"
},
"distributor_links": {
"lcsc": "C2053149",
"digikey": "AT89S52-24AURTR-ND",
"mouser": "556-AT89S52-24AUR"
},
"distributor_check": {
"checked_at": "2026-10-30T22:45:39Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "AT89S52-24AURTR-ND",
"status": "found"
},
"mouser": {
"pn": "556-AT89S52-24AUR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "P1.5 (MOSI)",
"type": "bidirectional",
"description": "Port 1 bit 5 with internal pull-ups; alternate function MOSI is used for In-System Programming."
},
{
"number": "2",
"name": "P1.6 (MISO)",
"type": "bidirectional",
"description": "Port 1 bit 6 with internal pull-ups; alternate function MISO is used for In-System Programming."
},
{
"number": "3",
"name": "P1.7 (SCK)",
"type": "bidirectional",
"description": "Port 1 bit 7 with internal pull-ups; alternate function SCK is used for In-System Programming."
},
{
"number": "4",
"name": "RST",
"type": "input",
"description": "Reset input; a high on this pin for two machine cycles while the oscillator is running resets the device."
},
{
"number": "5",
"name": "P3.0 (RXD)",
"type": "bidirectional",
"description": "Port 3 bit 0 with internal pull-ups; alternate function RXD is the serial input port."
},
{
"number": "6",
"name": "NC",
"type": "unconnected",
"description": "No internal connection on this pin; leave unconnected."
},
{
"number": "7",
"name": "P3.1 (TXD)",
"type": "bidirectional",
"description": "Port 3 bit 1 with internal pull-ups; alternate function TXD is the serial output port."
},
{
"number": "8",
"name": "P3.2 (INT0)",
"type": "bidirectional",
"description": "Port 3 bit 2 with internal pull-ups; alternate function INT0 is external interrupt 0."
},
{
"number": "9",
"name": "P3.3 (INT1)",
"type": "bidirectional",
"description": "Port 3 bit 3 with internal pull-ups; alternate function INT1 is external interrupt 1."
},
{
"number": "10",
"name": "P3.4 (T0)",
"type": "bidirectional",
"description": "Port 3 bit 4 with internal pull-ups; alternate function T0 is the timer 0 external input."
},
{
"number": "11",
"name": "P3.5 (T1)",
"type": "bidirectional",
"description": "Port 3 bit 5 with internal pull-ups; alternate function T1 is the timer 1 external input."
},
{
"number": "12",
"name": "P3.6 (WR)",
"type": "bidirectional",
"description": "Port 3 bit 6 with internal pull-ups; alternate function WR is the external data memory write strobe."
},
{
"number": "13",
"name": "P3.7 (RD)",
"type": "bidirectional",
"description": "Port 3 bit 7 with internal pull-ups; alternate function RD is the external data memory read strobe."
},
{
"number": "14",
"name": "XTAL2",
"type": "output",
"description": "Output of the on-chip oscillator circuit, connected to the external crystal."
},
{
"number": "15",
"name": "XTAL1",
"type": "input",
"description": "Input to the on-chip oscillator circuit, connected to the external crystal."
},
{
"number": "16",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "17",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "18",
"name": "P2.0 (A8)",
"type": "bidirectional",
"description": "Port 2 bit 0 with internal pull-ups; emits the high-order address byte A8 during external memory accesses."
},
{
"number": "19",
"name": "P2.1 (A9)",
"type": "bidirectional",
"description": "Port 2 bit 1 with internal pull-ups; emits the high-order address byte A9 during external memory accesses."
},
{
"number": "20",
"name": "P2.2 (A10)",
"type": "bidirectional",
"description": "Port 2 bit 2 with internal pull-ups; emits the high-order address byte A10 during external memory accesses."
},
{
"number": "21",
"name": "P2.3 (A11)",
"type": "bidirectional",
"description": "Port 2 bit 3 with internal pull-ups; emits the high-order address byte A11 during external memory accesses."
},
{
"number": "22",
"name": "P2.4 (A12)",
"type": "bidirectional",
"description": "Port 2 bit 4 with internal pull-ups; emits the high-order address byte A12 during external memory accesses."
},
{
"number": "23",
"name": "P2.5 (A13)",
"type": "bidirectional",
"description": "Port 2 bit 5 with internal pull-ups; emits the high-order address byte A13 during external memory accesses."
},
{
"number": "24",
"name": "P2.6 (A14)",
"type": "bidirectional",
"description": "Port 2 bit 6 with internal pull-ups; emits the high-order address byte A14 during external memory accesses."
},
{
"number": "25",
"name": "P2.7 (A15)",
"type": "bidirectional",
"description": "Port 2 bit 7 with internal pull-ups; emits the high-order address byte A15 during external memory accesses."
},
{
"number": "26",
"name": "PSEN",
"type": "output",
"description": "Program store enable strobe for external program memory."
},
{
"number": "27",
"name": "ALE/PROG",
"type": "bidirectional",
"description": "Address latch enable output at 1/6 of the oscillator frequency; program pulse input during Flash programming."
},
{
"number": "28",
"name": "NC",
"type": "unconnected",
"description": "No internal connection on this pin; leave unconnected."
},
{
"number": "29",
"name": "EA/VPP",
"type": "input",
"description": "External access enable and programming voltage input for Flash programming."
},
{
"number": "30",
"name": "P0.7 (AD7)",
"type": "bidirectional",
"description": "Port 0 bit 7, open-drain; multiplexed low-order address/data bus during external memory access, and needs external pull-ups during program verification."
},
{
"number": "31",
"name": "P0.6 (AD6)",
"type": "bidirectional",
"description": "Port 0 bit 6, open-drain; multiplexed low-order address/data bus during external memory access, and needs external pull-ups during program verification."
},
{
"number": "32",
"name": "P0.5 (AD5)",
"type": "bidirectional",
"description": "Port 0 bit 5, open-drain; multiplexed low-order address/data bus during external memory access, and needs external pull-ups during program verification."
},
{
"number": "33",
"name": "P0.4 (AD4)",
"type": "bidirectional",
"description": "Port 0 bit 4, open-drain; multiplexed low-order address/data bus during external memory access, and needs external pull-ups during program verification."
},
{
"number": "34",
"name": "P0.3 (AD3)",
"type": "bidirectional",
"description": "Port 0 bit 3, open-drain; multiplexed low-order address/data bus during external memory access, and needs external pull-ups during program verification."
},
{
"number": "35",
"name": "P0.2 (AD2)",
"type": "bidirectional",
"description": "Port 0 bit 2, open-drain; multiplexed low-order address/data bus during external memory access, and needs external pull-ups during program verification."
},
{
"number": "36",
"name": "P0.1 (AD1)",
"type": "bidirectional",
"description": "Port 0 bit 1, open-drain; multiplexed low-order address/data bus during external memory access, and needs external pull-ups during program verification."
},
{
"number": "37",
"name": "P0.0 (AD0)",
"type": "bidirectional",
"description": "Port 0 bit 0, open-drain; multiplexed low-order address/data bus during external memory access, and needs external pull-ups during program verification."
},
{
"number": "38",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage; operating range 4.0V to 5.5V for the -24 speed grade."
},
{
"number": "39",
"name": "NC",
"type": "unconnected",
"description": "No internal connection on this pin; leave unconnected."
},
{
"number": "40",
"name": "P1.0 (T2)",
"type": "bidirectional",
"description": "Port 1 bit 0 with internal pull-ups; alternate function T2 is the external count input to Timer/Counter 2."
},
{
"number": "41",
"name": "P1.1 (T2 EX)",
"type": "bidirectional",
"description": "Port 1 bit 1 with internal pull-ups; alternate function T2EX is the Timer/Counter 2 capture/reload trigger and direction control."
},
{
"number": "42",
"name": "P1.2",
"type": "bidirectional",
"description": "Port 1 bit 2 general-purpose I/O with internal pull-ups."
},
{
"number": "43",
"name": "P1.3",
"type": "bidirectional",
"description": "Port 1 bit 3 general-purpose I/O with internal pull-ups."
},
{
"number": "44",
"name": "P1.4",
"type": "bidirectional",
"description": "Port 1 bit 4 general-purpose I/O with internal pull-ups."
}
],
"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 ordering table lists AT89S52-24AU (package 44A, TQFP, 10x10 mm, industrial) and does not list th",
"1/44 pins cited to the wrong page (name found elsewhere): ['15:XTAL1@p2']",
"1/44 pin names appear NOWHERE in the datasheet text: ['14:XTAL2@p2']"
],
"pages_sent": 9,
"cost_usd": 0.0372,
"at": "2026-10-30T22:45:28"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/19b9f9ffeed42936ced400ccb208d473.pdf",
"pages": 38,
"sha256": "944094fe7c814eeb",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 44,
"described": 44,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "at89s52-24aur.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12.0,
12.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "61ecec1147f835d2c9d165c450b1c8d53e65b038f6ca1dac3066a2dfb1bbbb85",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "at89s52-24aur-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12.0,
12.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "d659caa81324883dfc0d7130aeccd70c41e2e898ba676349f8deb79c5e366d24",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}