component
ATTINY461-20SU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268
{
"slug": "attiny461-20su",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Pre-ordered MCUs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"attiny461-20su",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"attiny461-20su.kicad_sym",
"attiny461-20su.kicad_mod",
"attiny461-20su.glb",
"attiny461-20su.step",
"attiny461-20su.lbr",
"docs/hero.png",
"docs/attiny461-20su-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"attiny461-20su-hero.glb",
"attiny461-20su-hero.overlay.json",
"attiny461-20su-etched.glb"
],
"component": {
"mpn": "ATTINY461-20SU",
"manufacturer": "Microchip Tech",
"package": "SOIC-20-300mil",
"pin_count": 20,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/255dc0ae55c87a0c618c0929fbb4b52d.pdf",
"parts": {
"symbol": "attiny461-20su.kicad_sym",
"footprint": "attiny461-20su.kicad_mod",
"model_3d": "attiny461-20su-hero.glb",
"model_3d_plain": "attiny461-20su-etched.glb",
"model_3d_step": "attiny461-20su-etched.step",
"model_3d_step_plain": "attiny461-20su.step",
"lbr": "attiny461-20su.lbr"
},
"distributor_links": {
"lcsc": "C614926",
"digikey": "ATTINY461-20SU-ND",
"mouser": "556-ATTINY461-20SU"
},
"distributor_check": {
"checked_at": "2026-10-30T11:57:14Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATTINY461-20SU-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "556-ATTINY461-20SU",
"status": "found",
"lifecycle": "Not Recommended for New Designs"
}
},
"pins": [
{
"number": "1",
"name": "PB0",
"type": "bidirectional",
"description": "Port B bit 0, bi-directional I/O with selectable pull-up; alternate functions MOSI/DI/SDA (USI data input), OC1A and PCINT8."
},
{
"number": "2",
"name": "PB1",
"type": "bidirectional",
"description": "Port B bit 1, bi-directional I/O with selectable pull-up; alternate functions MISO/DO (USI data output), OC1A and PCINT9."
},
{
"number": "3",
"name": "PB2",
"type": "bidirectional",
"description": "Port B bit 2, bi-directional I/O with selectable pull-up; alternate functions SCK/USCK/SCL (USI clock), OC1B and PCINT10."
},
{
"number": "4",
"name": "PB3",
"type": "bidirectional",
"description": "Port B bit 3, bi-directional I/O with selectable pull-up; alternate functions OC1B and PCINT11."
},
{
"number": "5",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage (2.7-5.5V for ATtiny461, 1.8-5.5V for ATtiny461V)."
},
{
"number": "6",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "7",
"name": "PB4",
"type": "bidirectional",
"description": "Port B bit 4, bi-directional I/O with selectable pull-up; alternate functions XTAL1/CLKI (chip clock oscillator input), OC1D, ADC7 and PCINT12."
},
{
"number": "8",
"name": "PB5",
"type": "bidirectional",
"description": "Port B bit 5, bi-directional I/O with selectable pull-up; alternate functions XTAL2/CLKO (crystal oscillator output, system clock output), OC1D, ADC8 and PCINT13."
},
{
"number": "9",
"name": "PB6",
"type": "bidirectional",
"description": "Port B bit 6, bi-directional I/O with selectable pull-up; alternate functions ADC9, T0, INT0 and PCINT14."
},
{
"number": "10",
"name": "PB7",
"type": "bidirectional",
"description": "Port B bit 7 / RESET: active-low reset input (pulse longer than the minimum length generates a reset) that can be used as a weak I/O pin when RSTDISBL fuse is programmed; also debugWIRE I/O, ADC10 and PCINT15."
},
{
"number": "11",
"name": "PA7",
"type": "bidirectional",
"description": "Port A bit 7, bi-directional I/O with selectable pull-up; alternate functions ADC6, AIN1 and PCINT7."
},
{
"number": "12",
"name": "PA6",
"type": "bidirectional",
"description": "Port A bit 6, bi-directional I/O with selectable pull-up; alternate functions ADC5, AIN0 and PCINT6."
},
{
"number": "13",
"name": "PA5",
"type": "bidirectional",
"description": "Port A bit 5, bi-directional I/O with selectable pull-up; alternate functions ADC4, AIN2 and PCINT5."
},
{
"number": "14",
"name": "PA4",
"type": "bidirectional",
"description": "Port A bit 4, bi-directional I/O with selectable pull-up; alternate functions ADC3, ICP0 and PCINT4."
},
{
"number": "15",
"name": "AVCC",
"type": "power_in",
"description": "Analog supply for the ADC, analog comparator, BOD, internal voltage reference and Port A; must be connected to VCC even if the ADC is unused, through a low-pass filter if the ADC is used."
},
{
"number": "16",
"name": "AGND",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "17",
"name": "PA3",
"type": "bidirectional",
"description": "Port A bit 3, bi-directional I/O with selectable pull-up; alternate functions AREF (ADC reference) and PCINT3."
},
{
"number": "18",
"name": "PA2",
"type": "bidirectional",
"description": "Port A bit 2, bi-directional I/O with selectable pull-up; alternate functions ADC2, INT1, USCK/SCL (USI clock, when USIPOS set) and PCINT2."
},
{
"number": "19",
"name": "PA1",
"type": "bidirectional",
"description": "Port A bit 1, bi-directional I/O with selectable pull-up; alternate functions ADC1, DO (USI data output, when USIPOS set) and PCINT1."
},
{
"number": "20",
"name": "PA0",
"type": "bidirectional",
"description": "Port A bit 0, bi-directional I/O with selectable pull-up; alternate functions ADC0, DI/SDA (USI data input, when USIPOS set) and PCINT0."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pin numbers 11-20 are inferred from the PDIP/SOIC figure text order, which lists the right-hand colu; The datasheet is inconsistent on the PA7/PA6 comparator inputs. Figure 1-1 gives PA7=AIN1 and PA6=AI; Pin type for PB7/RESET is set to bidirectional because the pin can work as I/O. When the reset funct"
],
"pages_sent": 57,
"cost_usd": 0.4197,
"at": "2026-10-30T11:56:57"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/255dc0ae55c87a0c618c0929fbb4b52d.pdf",
"pages": 242,
"sha256": "9f65cf6ba6f875c2",
"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": "attiny461-20su.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
10.3,
12.8,
2.75
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "attiny461-20su-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
10.3,
12.8,
2.75
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "1a85ce9b9dd9fb877cf1c42489bbcab1dc6fe6efbc9a2d8c598e68a483fd7bc1",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}