component
AD156A4
Public Made by Adomby adom
JieLi Tech Microcontrollers (MCU/MPU/SOC), QFN-32(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "ad156a4",
"title": "AD156A4",
"brief": "JieLi Tech Microcontrollers (MCU/MPU/SOC), QFN-32(4x4). 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",
"ad156a4",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "AD156A4",
"manufacturer": "JieLi Tech",
"package": "QFN-32(4x4)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603346776296738816",
"parts": {
"symbol": "ad156a4.kicad_sym",
"footprint": "ad156a4.kicad_mod",
"model_3d": "ad156a4-hero.glb",
"model_3d_plain": "ad156a4-etched.glb",
"model_3d_step": "ad156a4-etched.step",
"model_3d_step_plain": "ad156a4.step",
"lbr": "ad156a4.lbr"
},
"distributor_links": {
"lcsc": "C22440795"
},
"distributor_check": {
"checked_at": "2026-10-18T09:52:27Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "PA1",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC1, SPI0CLKB, SD0CLKA, UART0RXB, I2C_SCL(B) and CAP2."
},
{
"number": "2",
"name": "PA0",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive, default pull-up, used for Long Press Reset; multiplexed with ADC0 and UART0TXB."
},
{
"number": "3",
"name": "VDDIO",
"type": "power_out",
"description": "Digital power pin, internal linear regulator output of 2.0 V to 3.4 V (typ 3.0 V) with up to 100 mA load at VBAT=3.7 V."
},
{
"number": "4",
"name": "VBAT",
"type": "power_in",
"description": "Battery power supply input, 2.0 V to 5.5 V operating, absolute maximum 5.5 V."
},
{
"number": "5",
"name": "DACP",
"type": "output",
"description": "Class-D audio power amplifier positive output."
},
{
"number": "6",
"name": "DACN",
"type": "output",
"description": "Class-D audio power amplifier negative output."
},
{
"number": "7",
"name": "PB11",
"type": "bidirectional",
"description": "High-voltage-resistance GPIO with 8 mA drive; also OSCIB crystal oscillator input (B)."
},
{
"number": "8",
"name": "PB10",
"type": "bidirectional",
"description": "High-voltage-resistance GPIO with 8 mA drive, default pull-up; also MCLR (active low reset)."
},
{
"number": "9",
"name": "PB9",
"type": "bidirectional",
"description": "High-voltage-resistance GPIO with 8 mA drive; multiplexed with SPI1DOD, UART1TRXB, I2C_SDA(D) and CAP1."
},
{
"number": "10",
"name": "PB8",
"type": "bidirectional",
"description": "High-voltage-resistance GPIO with 8 mA drive; multiplexed with SPI1CLKD, I2C_SCL(D) and OSCIA crystal oscillator input (A)."
},
{
"number": "11",
"name": "PB7",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; also SPI1DID (SPI1 data in D)."
},
{
"number": "12",
"name": "PB6",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; also SD0DATC (SD0 data C)."
},
{
"number": "13",
"name": "PB5",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC13 and SD0CMDC."
},
{
"number": "14",
"name": "PB4",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC12 and SD0CLKC."
},
{
"number": "15",
"name": "PB3",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; also TDM_MCLK."
},
{
"number": "16",
"name": "PB2",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with SPI1DIA, SD0DATB and TDM_DAT."
},
{
"number": "17",
"name": "PB1",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive, default pull-down; multiplexed with ADC11, SPI1DOA, SD0CMDB, I2C_SDA(A) and TDM_SYN."
},
{
"number": "18",
"name": "PB0",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive, default pull-down; multiplexed with ADC10, SPI1CLKA, SD0CLKB, I2C_SCL(A) and TDM_CLK."
},
{
"number": "19",
"name": "PA15",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC9, SPI1DOB and MCAP3."
},
{
"number": "20",
"name": "PA14",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC8, SPI1CLKB, CAP0 and MCAP2."
},
{
"number": "21",
"name": "PA13",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with SPI1DIB, TMR1 and MCAP1."
},
{
"number": "22",
"name": "PA12",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; also MPWM3 (PWM channel 3 output)."
},
{
"number": "23",
"name": "PA11",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with TMR0 and MPWM2."
},
{
"number": "24",
"name": "PA10",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; no alternate functions listed."
},
{
"number": "25",
"name": "PA9",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; no alternate functions listed."
},
{
"number": "26",
"name": "PA8",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with SPI1DIC and SD0DATD."
},
{
"number": "27",
"name": "PA7",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC7, SPI1DOC, SD0CMDD, UART0RXA, I2C_SDA(C) and MPWM1."
},
{
"number": "28",
"name": "PA6",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC6, SPI1CLKC, SD0CLKD, UART0TXA, I2C_SCL(C), TMR2 and MPWM0."
},
{
"number": "29",
"name": "PA5",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC5, SPI0DAT3 and UART1RXA."
},
{
"number": "30",
"name": "PA4",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC4, SPI0DAT2, UART1TXA and LVD (low voltage detect)."
},
{
"number": "31",
"name": "PA3",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC3, SPI0DIB(1), SD0DATA, CLKOUT, PWM2(B) and MCAP0."
},
{
"number": "32",
"name": "PA2",
"type": "bidirectional",
"description": "GPIO with 8/64 mA drive; multiplexed with ADC2, SPI0DOB(0), SD0CMDA, I2C_SDA(B) and PWM2(A)."
},
{
"number": "33",
"name": "VSS",
"type": "power_in",
"description": "Exposed ground pad (PAD VSS)."
}
],
"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 exposed pad is printed as 'PAD' in Table 1-1 rather than a numbered pin; it is listed as VSS gro; Table 1-1 gives VDDIO type as 'P' (power) and describes it as the internal linear regulator output. ; PB10 is listed as I/O in Table 1-1 but its function is MCLR (active low). Recorded as bidirectional ",
"exposed pad 33 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 10,
"cost_usd": 0.0637,
"at": "2026-10-18T09:50:10"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603346776296738816",
"pages": 10,
"sha256": "3fcbf159b92a3850",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "ad156a4.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4,
0.6
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "7b482a511cdf2cf875c31931f9fea7f745b8dac2ea6203531cd6604f40a290cb",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ad156a4-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4,
0.6
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "7cfe259052c86dce3472ad956ac5a845a8567b1dc8085357e5e2e75353ac5f98",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "JieLi Tech",
"Package": "QFN-32(4x4)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "3fcbf159b92a3850074d6dead84a92df3859d8d2111ba4fdd18cd27875eb3b71",
"rows": [
{
"name": "Ambient Temperature",
"symbol": "Tamb",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Supply Voltage",
"symbol": "VBAT",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "3.3V IO Input Voltage",
"symbol": "VVDDIO33",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 3.6,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Voltage Input",
"symbol": "VBAT",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": 3.7,
"max": 5.5,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Voltage output",
"symbol": "VVDDIO",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": 3,
"max": 3.4,
"conditions": "VBAT = 3.7V, 100mA loading",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Loading current",
"symbol": "IVDDIO",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": null,
"max": 100,
"conditions": "VBAT=3.7V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Low-Level Input Voltage",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "VDDIO = 3.3V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Low-Level Output Voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.33,
"conditions": "VDDIO = 3.3V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "High-Level Output Voltage",
"symbol": "VOH",
"kind": "electrical",
"unit": "V",
"min": 2.7,
"typ": null,
"max": null,
"conditions": "VDDIO = 3.3V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Internal Pull-Up Resistor (PA0~PA15, PB0~PB7)",
"symbol": "",
"kind": "electrical",
"unit": "K",
"min": null,
"typ": 10,
"max": null,
"conditions": "PA0~PA15, PB0~PB7; accuracy ±20%",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Internal Pull-Down Resistor (PA0~PA15, PB0~PB7)",
"symbol": "",
"kind": "electrical",
"unit": "K",
"min": null,
"typ": 60,
"max": null,
"conditions": "PA0~PA15, PB0~PB7; accuracy ±20%",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Internal Pull-Up Resistor (PB8~PB11)",
"symbol": "",
"kind": "electrical",
"unit": "K",
"min": null,
"typ": 10,
"max": null,
"conditions": "PB8~PB11; accuracy ±20%",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Internal Pull-Down Resistor (PB8~PB11)",
"symbol": "",
"kind": "electrical",
"unit": "K",
"min": null,
"typ": 60,
"max": null,
"conditions": "PB8~PB11; accuracy ±20%",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Internal pull-up/pull-down resistance accuracy",
"symbol": "",
"kind": "tolerance",
"unit": "%",
"min": -20,
"typ": null,
"max": 20,
"conditions": "internal pull-up/pull-down resistance",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Soft-off current",
"symbol": "",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 2,
"max": null,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Working voltage VBAT",
"symbol": "VBAT",
"kind": "recommended_operating",
"unit": "V",
"min": 2,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Working voltage VDDIO",
"symbol": "VDDIO",
"kind": "recommended_operating",
"unit": "V",
"min": 2,
"typ": null,
"max": 3.4,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating Temperature",
"symbol": "",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Main frequency",
"symbol": "",
"kind": "recommended_operating",
"unit": "MHz",
"min": null,
"typ": null,
"max": 120,
"conditions": "",
"source_page": 2,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"ad156a4"
],
"discovery_pitch": "AD156A4 (JieLi Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
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"visibility": {
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}
}