component
AT32UC3B0256-Z2UT
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, QFN-64-EP(9x9). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "at32uc3b0256-z2ut",
"title": "AT32UC3B0256-Z2UT",
"brief": "Microchip Tech Pre-ordered MCUs, QFN-64-EP(9x9). 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",
"at32uc3b0256-z2ut",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "AT32UC3B0256-Z2UT",
"manufacturer": "Microchip Tech",
"package": "QFN-64-EP(9x9)",
"pin_count": 65,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/adb00c208318e26b3f2f2819b0eb8b52.pdf",
"parts": {
"symbol": "at32uc3b0256-z2ut.kicad_sym",
"footprint": "at32uc3b0256-z2ut.kicad_mod",
"model_3d": "at32uc3b0256-z2ut-hero.glb",
"model_3d_plain": "at32uc3b0256-z2ut-etched.glb",
"model_3d_step": "at32uc3b0256-z2ut-etched.step",
"model_3d_step_plain": "at32uc3b0256-z2ut.step",
"lbr": "at32uc3b0256-z2ut.lbr"
},
"distributor_links": {
"lcsc": "C1337132"
},
"distributor_check": {
"checked_at": "2026-10-31T18:45:35Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "2",
"name": "TCK",
"type": "input",
"description": "JTAG test clock input (TCK)."
},
{
"number": "3",
"name": "PA00",
"type": "bidirectional",
"description": "GPIO 0; takes the JTAG TDI function when JTAG is enabled."
},
{
"number": "4",
"name": "PA01",
"type": "bidirectional",
"description": "GPIO 1; takes the JTAG TDO function when JTAG is enabled."
},
{
"number": "5",
"name": "PA02",
"type": "bidirectional",
"description": "GPIO 2; takes the JTAG TMS function when JTAG is enabled."
},
{
"number": "6",
"name": "PB00",
"type": "bidirectional",
"description": "GPIO 32; function A TC A0, B EIC SCAN[2], C USART2 CTS; Nexus MDO[1] with AXS=0."
},
{
"number": "7",
"name": "PB01",
"type": "bidirectional",
"description": "GPIO 33; function A TC B0, B EIC SCAN[3], C USART2 RTS; Nexus MDO[2] with AXS=0."
},
{
"number": "8",
"name": "VDDCORE",
"type": "power_in",
"description": "Core power supply, 1.65V to 1.95V."
},
{
"number": "9",
"name": "PA03",
"type": "bidirectional",
"description": "GPIO 3; function A ADC AD[0], B PM GCLK[0], C USBB USB_ID, D ABDAC DATA[0]."
},
{
"number": "10",
"name": "PA04",
"type": "bidirectional",
"description": "GPIO 4; function A ADC AD[1], B PM GCLK[1], C USBB USB_VBOF, D ABDAC DATAN[0]."
},
{
"number": "11",
"name": "PA05",
"type": "bidirectional",
"description": "GPIO 5; function A EIC EXTINT[0], B ADC AD[2], C USART1 DCD, D ABDAC DATA[1]."
},
{
"number": "12",
"name": "PA06",
"type": "bidirectional",
"description": "GPIO 6; function A EIC EXTINT[1], B ADC AD[3], C USART1 DSR, D ABDAC DATAN[1]."
},
{
"number": "13",
"name": "PA07",
"type": "bidirectional",
"description": "GPIO 7; function A PWM PWM[0], B ADC AD[4], C USART1 DTR, D SSC RX_FRAME_SYNC."
},
{
"number": "14",
"name": "PA08",
"type": "bidirectional",
"description": "GPIO 8; function A PWM PWM[1], B ADC AD[5], C USART1 RI, D SSC RX_CLOCK."
},
{
"number": "15",
"name": "PA30",
"type": "bidirectional",
"description": "GPIO 30; function A ADC AD[6], B EIC SCAN[0], C PM GCLK[2]."
},
{
"number": "16",
"name": "PA31",
"type": "bidirectional",
"description": "GPIO 31; function A ADC AD[7], B EIC SCAN[1], C PWM PWM[6]."
},
{
"number": "17",
"name": "GNDANA",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "18",
"name": "ADVREF",
"type": "power_in",
"description": "ADC reference pin; no function described in the supplied text."
},
{
"number": "19",
"name": "VDDANA",
"type": "power_in",
"description": "Analog power supply, 3.0V to 3.6V."
},
{
"number": "20",
"name": "VDDOUT",
"type": "power_out",
"description": "Voltage regulator output, 1.65V to 1.95V."
},
{
"number": "21",
"name": "VDDIN",
"type": "power_in",
"description": "Voltage regulator input supply, 3.0V to 3.6V."
},
{
"number": "22",
"name": "VDDCORE",
"type": "power_in",
"description": "Core power supply, 1.65V to 1.95V."
},
{
"number": "23",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "24",
"name": "PB02",
"type": "bidirectional",
"description": "GPIO 34; function A EIC EXTINT[6], B TC A1, C USART1 TXD; Nexus MDO[3] with AXS=0."
},
{
"number": "25",
"name": "PB03",
"type": "bidirectional",
"description": "GPIO 35; function A EIC EXTINT[7], B TC B1, C USART1 RXD; Nexus MDO[4] with AXS=0."
},
{
"number": "26",
"name": "PB04",
"type": "bidirectional",
"description": "GPIO 36; function A USART1 CTS, B SPI0 NPCS[3], C TC CLK2; Nexus MDO[5] with AXS=0."
},
{
"number": "27",
"name": "PB05",
"type": "bidirectional",
"description": "GPIO 37; function A USART1 RTS, B SPI0 NPCS[2], C PWM PWM[5]; Nexus EVTI_N with AXS=0."
},
{
"number": "28",
"name": "PA09",
"type": "bidirectional",
"description": "GPIO 9; function A TWI SCL, B SPI0 NPCS[2], C USART1 CTS."
},
{
"number": "29",
"name": "PA10",
"type": "bidirectional",
"description": "GPIO 10; function A TWI SDA, B SPI0 NPCS[3], C USART1 RTS."
},
{
"number": "30",
"name": "PA11",
"type": "bidirectional",
"description": "GPIO 11; function A USART0 RTS, B TC A2, C PWM PWM[0], D SSC RX_DATA; also XIN32 oscillator pin."
},
{
"number": "31",
"name": "PA12",
"type": "bidirectional",
"description": "GPIO 12; function A USART0 CTS, B TC B2, C PWM PWM[1], D USART1 TXD; also XOUT32 oscillator pin."
},
{
"number": "32",
"name": "VDDIO",
"type": "power_in",
"description": "I/O power supply, 3.0V to 3.6V."
},
{
"number": "33",
"name": "PA13",
"type": "bidirectional",
"description": "GPIO 13; function A EIC NMI, B PWM PWM[2], C USART0 CLK, D SSC RX_CLOCK."
},
{
"number": "34",
"name": "PA14",
"type": "bidirectional",
"description": "GPIO 14; function A SPI0 MOSI, B PWM PWM[3], C EIC EXTINT[2], D PM GCLK[2]."
},
{
"number": "35",
"name": "PA15",
"type": "bidirectional",
"description": "GPIO 15; function A SPI0 SCK, B PWM PWM[4], C USART2 CLK; Nexus EVTO_N."
},
{
"number": "36",
"name": "PA16",
"type": "bidirectional",
"description": "GPIO 16; function A SPI0 NPCS[0], B TC CLK1, C PWM PWM[4]."
},
{
"number": "37",
"name": "PA17",
"type": "bidirectional",
"description": "GPIO 17; function A SPI0 NPCS[1], B TC CLK2, C SPI0 SCK, D USART1 RXD."
},
{
"number": "38",
"name": "PB06",
"type": "bidirectional",
"description": "GPIO 38; function A SSC RX_CLOCK, B USART1 DCD, C EIC SCAN[4], D ABDAC DATA[0]."
},
{
"number": "39",
"name": "PA18",
"type": "bidirectional",
"description": "GPIO 18; function A USART0 RXD, B PWM PWM[5], C SPI0 MISO, D SSC RX_FRAME_SYNC; also XIN0 oscillator pin."
},
{
"number": "40",
"name": "PA19",
"type": "bidirectional",
"description": "GPIO 19; function A USART0 TXD, B PWM PWM[6], C SPI0 MOSI, D SSC TX_CLOCK; also XOUT0 oscillator pin."
},
{
"number": "41",
"name": "PA28",
"type": "bidirectional",
"description": "GPIO 28; function A USART0 CLK, B PWM PWM[4], C SPI0 MISO, D ABDAC DATAN[0]; also XIN1 oscillator pin."
},
{
"number": "42",
"name": "PA29",
"type": "bidirectional",
"description": "GPIO 29; function A TC CLK0, B TC CLK1, C SPI0 MOSI; also XOUT1 oscillator pin."
},
{
"number": "43",
"name": "PB07",
"type": "bidirectional",
"description": "GPIO 39; function A SSC RX_DATA, B USART1 DSR, C EIC SCAN[5], D ABDAC DATAN[0]."
},
{
"number": "44",
"name": "PA20",
"type": "bidirectional",
"description": "High drive current GPIO 20; function A USART1 CLK, B TC CLK0, C USART2 RXD, D SSC TX_DATA."
},
{
"number": "45",
"name": "PA21",
"type": "bidirectional",
"description": "High drive current GPIO 21; function A PWM PWM[2], B TC A1, C USART2 TXD, D SSC TX_FRAME_SYNC."
},
{
"number": "46",
"name": "PA22",
"type": "bidirectional",
"description": "High drive current GPIO 22; function A PWM PWM[6], B TC B1, C ADC TRIGGER, D ABDAC DATA[0]."
},
{
"number": "47",
"name": "PA23",
"type": "bidirectional",
"description": "High drive current GPIO 23; function A USART1 TXD, B SPI0 NPCS[1], C EIC EXTINT[3], D PWM PWM[0]."
},
{
"number": "48",
"name": "VDDIO",
"type": "power_in",
"description": "I/O power supply, 3.0V to 3.6V."
},
{
"number": "49",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "50",
"name": "DP",
"type": "bidirectional",
"description": "USB D+ data line; no further description in the supplied text."
},
{
"number": "51",
"name": "DM",
"type": "bidirectional",
"description": "USB D- data line; no further description in the supplied text."
},
{
"number": "52",
"name": "VBUS",
"type": "power_in",
"description": "USB VBUS pin; no further description in the supplied text."
},
{
"number": "53",
"name": "VDDPLL",
"type": "power_in",
"description": "PLL power supply, 1.65V to 1.95V."
},
{
"number": "54",
"name": "PB08",
"type": "bidirectional",
"description": "GPIO 40; function A SSC RX_FRAME_SYNC, B USART1 DTR, C EIC SCAN[6], D ABDAC DATA[1]."
},
{
"number": "55",
"name": "PB09",
"type": "bidirectional",
"description": "GPIO 41; function A SSC TX_CLOCK, B USART1 RI, C EIC SCAN[7], D ABDAC DATAN[1]."
},
{
"number": "56",
"name": "VDDCORE",
"type": "power_in",
"description": "Core power supply, 1.65V to 1.95V."
},
{
"number": "57",
"name": "PB10",
"type": "bidirectional",
"description": "GPIO 42; function A SSC TX_DATA, B TC A2, C USART0 RXD."
},
{
"number": "58",
"name": "PB11",
"type": "bidirectional",
"description": "GPIO 43; function A SSC TX_FRAME_SYNC, B TC B2, C USART0 TXD."
},
{
"number": "59",
"name": "PA24",
"type": "bidirectional",
"description": "GPIO 24; function A USART1 RXD, B SPI0 NPCS[0], C EIC EXTINT[4], D PWM PWM[1]."
},
{
"number": "60",
"name": "PA25",
"type": "bidirectional",
"description": "GPIO 25; function A SPI0 MISO, B PWM PWM[3], C EIC EXTINT[5]."
},
{
"number": "61",
"name": "PA26",
"type": "bidirectional",
"description": "GPIO 26; function A USBB USB_ID, B USART2 TXD, C TC A0, D ABDAC DATA[1]."
},
{
"number": "62",
"name": "PA27",
"type": "bidirectional",
"description": "GPIO 27; function A USBB USB_VBOF, B USART2 RXD, C TC B0, D ABDAC DATAN[1]."
},
{
"number": "63",
"name": "RESET_N",
"type": "input",
"description": "Active-low reset input."
},
{
"number": "64",
"name": "VDDIO",
"type": "power_in",
"description": "I/O power supply, 3.0V to 3.6V."
},
{
"number": "65",
"name": "EP",
"type": "passive",
"description": "Exposed pad, not connected internally but should be soldered to ground to increase board level reliability."
}
],
"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: The exposed-pad note appears under the QFN48 figure (Figure 4-2) and the 64-pin figure does not show; The supplied pages give no description for ADVREF, DP, DM or VBUS. Their electrical types are inferr; Function D (ABDAC, SSC and others) is stated only for UC3Bx512 parts. AT32UC3B0256 has no ABDAC and ",
"7/65 pins cited to the wrong page (name found elsewhere): ['17:GNDANA@p11', '20:VDDOUT@p11', '48:VDDIO@p10', '53:VDDPLL@p10']"
],
"pages_sent": 12,
"cost_usd": 0.2077,
"at": "2026-10-31T18:45:20"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/adb00c208318e26b3f2f2819b0eb8b52.pdf",
"pages": 107,
"sha256": "01c74c26b6c27695",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 65,
"described": 65,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "at32uc3b0256-z2ut.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9,
9,
0.75
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "dce07a86ec3fe3ca87eebdff13827f55e036ced5518fee01f85cec4a3f56366d",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "at32uc3b0256-z2ut-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9,
9,
0.75
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "53cef164b00c956500a310a7503a12d51add2f1dc5aef8100b807c25bda23f1a",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "QFN-64-EP(9x9)",
"Category": "Embedded Processors & Controllers",
"Pins": "65"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "01c74c26b6c276959137a6ebbc798fd76dceb6ef2b563c4b865e2082dbac42d9",
"rows": [
{
"name": "DC Supply Core",
"symbol": "VVDDCORE",
"kind": "recommended_operating",
"unit": "V",
"min": 1.65,
"typ": null,
"max": 1.95,
"conditions": "",
"source_page": 36,
"source": "datasheet"
},
{
"name": "DC Supply PLL",
"symbol": "VVDDPLL",
"kind": "recommended_operating",
"unit": "V",
"min": 1.65,
"typ": null,
"max": 1.95,
"conditions": "",
"source_page": 36,
"source": "datasheet"
},
{
"name": "DC Supply Peripheral I/Os",
"symbol": "VVDDIO",
"kind": "recommended_operating",
"unit": "V",
"min": 3,
"typ": null,
"max": 3.6,
"conditions": "",
"source_page": 36,
"source": "datasheet"
},
{
"name": "Input Low-level Voltage",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 0.8,
"conditions": "",
"source_page": 36,
"source": "datasheet"
},
{
"name": "Input High-level Voltage",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": 5.5,
"conditions": "All I/O pins except TCK, RESET_N, PA03-PA08, PA11, PA12, PA18, PA19, PA28-PA31",
"source_page": 36,
"source": "datasheet"
},
{
"name": "Input High-level Voltage",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": 3.6,
"conditions": "TCK, RESET_N, PA03, PA04, PA05, PA06, PA07, PA08, PA11, PA12, PA18, PA19, PA28, PA29, PA30, PA31",
"source_page": 36,
"source": "datasheet"
},
{
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"min": null,
"typ": 10,
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{
"name": "Reset signal propagation time",
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"kind": "timing",
"unit": "µs",
"min": null,
"typ": 200,
"max": 400,
"conditions": "",
"source_page": 39,
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{
"name": "RESET_N minimum pulse width",
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"min": 10,
"typ": null,
"max": null,
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"name": "CPU Clock Frequency",
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"typ": null,
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{
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"min": null,
"typ": 112,
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"name": "Page Programming Time",
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"name": "Flash Data Retention Time",
"symbol": "TFDR",
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"unit": "Year",
"min": 15,
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"name": "Operating Temperature",
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"source_page": 35,
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"name": "Storage Temperature",
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"source_page": 35,
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"source_page": 43,
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"name": "Stop mode current",
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"typ": 37.8,
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