component
CW32L031C8U6
Public Made by Adomby adom
CW Microcontrollers (MCU/MPU/SOC), QFN-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "cw32l031c8u6",
"title": "CW32L031C8U6",
"brief": "CW Microcontrollers (MCU/MPU/SOC), QFN-48(7x7). 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",
"cw32l031c8u6",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "CW32L031C8U6",
"manufacturer": "CW",
"package": "QFN-48(7x7)",
"pin_count": 49,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589839250725777408",
"parts": {
"symbol": "cw32l031c8u6.kicad_sym",
"footprint": "cw32l031c8u6.kicad_mod",
"model_3d": "cw32l031c8u6-hero.glb",
"model_3d_plain": "cw32l031c8u6-etched.glb",
"model_3d_step": "cw32l031c8u6-etched.step",
"model_3d_step_plain": "cw32l031c8u6.step",
"lbr": "cw32l031c8u6.lbr"
},
"distributor_links": {
"lcsc": "C5364174"
},
"distributor_check": {
"checked_at": "2026-10-18T03:15:17Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "Vcore",
"type": "power_out",
"description": "Internal core-logic supply node fed by the on-chip regulator; the extracted text gives no voltage limit or external capacitor value for this pin."
},
{
"number": "2",
"name": "PC13",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART1_TXD, RTC_1Hz, UART1_CTS, RTC_OUT, BTIM_ETR and RTC_TAMP; sinks/sources up to ±8 mA (up to ±20 mA where VOH/VOL requirements are relaxed)."
},
{
"number": "3",
"name": "PC14",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions AWT_ETR, UART2_TXD, UART1_RTS, BTIM2_TOGN and UART2_RXD, and the 32.768 kHz LSE oscillator input OSC32_IN; sinks/sources up to ±8 mA."
},
{
"number": "4",
"name": "PC15",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions HSE_OUT, UART2_RXD, MCO_OUT, BTIM2_TOGP, UART2_TXD and UART1_RXD, and the LSE oscillator output OSC32_OUT; sinks/sources up to ±8 mA."
},
{
"number": "5",
"name": "PF00",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions AWT_ETR, UART3_TXD, I2C_SDA, BTIM1_TOGN, UART3_RXD and GTIM2_TOGP, and the HSE oscillator input OSC_IN (4-32 MHz crystal or 1-32 MHz external clock in bypass mode)."
},
{
"number": "6",
"name": "PF01",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions LSE_OUT, UART3_RXD, I2C_SCL, BTIM1_TOGP, UART3_TXD and GTIM2_TOGN, and the HSE oscillator output OSC_OUT; sinks/sources up to ±8 mA."
},
{
"number": "7",
"name": "NRST",
"type": "input",
"description": "Active-low chip reset input with internal pull-up of 7-9 kΩ (8 kΩ typical); VIL max 0.3·VDD, VIH min 0.7·VDD, and minimum reset pulse width 20 µs."
},
{
"number": "8",
"name": "VSSA",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "9",
"name": "VDDA",
"type": "power_in",
"description": "Analog supply for the ADC, reset circuit and internal RC oscillators; operating range 1.65 V to 5.5 V and must always be greater than or equal to VDD."
},
{
"number": "10",
"name": "PA00",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN0, VC1_CH0 and LVD_CH1, and digital alternate functions UART3_CTS, UART2_CTS, RTC_TAMP, VC1_OUT, GTIM2_CH1 and GTIM2_ETR; injection current limit ±5 mA."
},
{
"number": "11",
"name": "PA01",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN1 and VC1_CH1, and digital alternate functions UART3_RTS, UART2_RTS, LVD_OUT, GTIM2_CH2 and RTC_TAMP; injection current limit ±5 mA."
},
{
"number": "12",
"name": "PA02",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN2 and VC1_CH2, and digital alternate functions UART3_TXD, UART2_TXD, VC2_OUT, GTIM2_CH3 and AWT_ETR; injection current limit ±5 mA."
},
{
"number": "13",
"name": "PA03",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN3 and VC1_CH3, and digital alternate functions UART3_RXD, UART2_RXD, GTIM2_CH2, PCLK_OUT, UART3_TXD, GTIM2_CH4 and ATIM_CH3A; injection current limit ±5 mA."
},
{
"number": "14",
"name": "PA04",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN4 and VC1_CH4, and digital alternate functions MCO_OUT, UART2_CTS, HCLK_OUT, SPI_CS, GTIM2_ETR and ATIM_CH2A; injection current limit ±5 mA."
},
{
"number": "15",
"name": "PA05",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN5, VC1_CH5 and VC2_CH0, and digital alternate functions GTIM2_ETR, UART2_RTS, BTIM2_TOGN, SPI_SCK, GTIM2_CH1 and ATIM_CH1A; injection current limit ±5 mA."
},
{
"number": "16",
"name": "PA06",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN6, VC1_CH6 and VC2_CH1, and digital alternate functions UART2_RXD, UART2_TXD, VC1_OUT, BTIM2_TOGP, SPI_MISO, GTIM1_CH1 and ATIM_BK; injection current limit ±5 mA."
},
{
"number": "17",
"name": "PA07",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN7, VC1_CH7 and VC2_CH2, and digital alternate functions UART2_TXD, UART2_RXD, VC2_OUT, BTIM1_TOGN, SPI_MOSI, GTIM1_CH2 and ATIM_CH1B; injection current limit ±5 mA."
},
{
"number": "18",
"name": "PB00",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN8/ExRef (external ADC reference), VC2_CH3 and LVD_CH2, and digital alternate functions UART2_RXD, UART1_CTS, UART2_TXD, BTIM1_TOGP, HSIOSC_OUT, GTIM1_CH3 and ATIM_CH2B; injection current limit ±5 mA."
},
{
"number": "19",
"name": "PB01",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN9 and VC2_CH4, and digital alternate functions UART2_TXD, UART1_RTS, UART2_RXD, BTIM3_TOGN, GTIM1_CH4 and ATIM_CH3B; injection current limit ±5 mA."
},
{
"number": "20",
"name": "PB02",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN10 and VC2_CH5, and digital alternate functions UART2_CTS, UART1_TXD, HSE_OUT, UART1_RXD, BTIM3_TOGP, GTIM1_ETR and ATIM_CH1A; injection current limit ±5 mA."
},
{
"number": "21",
"name": "PB10",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN11 and VC2_CH6, and digital alternate functions UART2_RTS, UART1_RXD, I2C_SCL, UART1_TXD, GTIM2_CH3 and ATIM_CH2A; injection current limit ±5 mA."
},
{
"number": "22",
"name": "PB11",
"type": "bidirectional",
"description": "Analog-capable I/O (TTa) with analog functions ADC_IN12, VC2_CH7 and LVD_CH3, and digital alternate functions LSI_OUT, I2C_SDA, BTIM_ETR, GTIM2_CH4 and ATIM_CH3A; injection current limit ±5 mA."
},
{
"number": "23",
"name": "VSS",
"type": "power_in",
"description": "Ground reference for the digital supply domain."
},
{
"number": "24",
"name": "VDD",
"type": "power_in",
"description": "Digital supply for the I/O ports and internal regulator, 1.65 V to 5.5 V; all VDD pins must be powered at the same voltage."
},
{
"number": "25",
"name": "PB12",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions GTIM2_TOGP, LSE_OUT, SPI_CS, GTIM1_TOGP and ATIM_BK; sinks/sources up to ±8 mA."
},
{
"number": "26",
"name": "PB13",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions GTIM2_TOGN, SPI_SCK, GTIM1_TOGN and ATIM_CH1B; sinks/sources up to ±8 mA."
},
{
"number": "27",
"name": "PB14",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions GTIM2_CH1, SPI_MISO, RTC_OUT and ATIM_CH2B; sinks/sources up to ±8 mA."
},
{
"number": "28",
"name": "PB15",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions GTIM2_CH2, BTIM2_TOGN, SPI_MOSI, RTC_1Hz and ATIM_CH3B; sinks/sources up to ±8 mA."
},
{
"number": "29",
"name": "PA08",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART1_TXD, BTIM2_TOGP, MCO_OUT, LVD_OUT and ATIM_CH1A; sinks/sources up to ±8 mA."
},
{
"number": "30",
"name": "PA09",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_TXD, UART1_RXD, I2C_SCL, BTIM1_TOGN, SPI_CS, UART3_RXD and ATIM_CH2A; sinks/sources up to ±8 mA."
},
{
"number": "31",
"name": "PA10",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_RXD, UART1_CTS, I2C_SDA, BTIM1_TOGP, SPI_SCK, UART3_TXD and ATIM_CH3A; sinks/sources up to ±8 mA."
},
{
"number": "32",
"name": "PA11",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_CTS, UART1_RTS, VC1_OUT, SPI_MISO and ATIM_GATE; sinks/sources up to ±8 mA."
},
{
"number": "33",
"name": "PA12",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_RTS, BTIM_ETR, VC2_OUT, SPI_MOSI and ATIM_ETR; sinks/sources up to ±8 mA."
},
{
"number": "34",
"name": "PA13/SWDIO",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions I2C_SDA, UART1_RXD, UART2_TXD and IR_OUT; after reset it serves as the SWD data pin SWDIO with internal pull-up enabled."
},
{
"number": "35",
"name": "PF06",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_CTS, I2C_SCL, UART2_CTS and BTIM3_TOGN; sinks/sources up to ±8 mA."
},
{
"number": "36",
"name": "PF07",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_RTS, I2C_SDA, UART2_RTS and BTIM3_TOGP; sinks/sources up to ±8 mA."
},
{
"number": "37",
"name": "PA14/SWCLK",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_TXD, I2C_SCL, UART1_TXD and UART2_RXD; after reset it serves as the SWD clock SWCLK with internal pull-up enabled."
},
{
"number": "38",
"name": "PA15",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_RXD, GTIM2_CH1, UART1_RXD, UART2_RXD, SPI_CS, GTIM2_ETR and ATIM_CH1B; sinks/sources up to ±8 mA."
},
{
"number": "39",
"name": "PB03",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_RTS, GTIM2_CH2, UART1_CTS, UART2_TXD, SPI_SCK, GTIM1_ETR and ATIM_CH2B; sinks/sources up to ±8 mA."
},
{
"number": "40",
"name": "PB04",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_CTS, UART1_RTS, UART2_CTS, SPI_MISO, GTIM1_CH1 and ATIM_CH3B; sinks/sources up to ±8 mA."
},
{
"number": "41",
"name": "PB05",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions AWT_ETR, UART2_RTS, SPI_MOSI, GTIM1_CH2 and ATIM_CH1A; sinks/sources up to ±8 mA."
},
{
"number": "42",
"name": "PB06",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_TXD, UART3_RXD, I2C_SCL, GTIM1_TOGP and ATIM_CH2A; sinks/sources up to ±8 mA."
},
{
"number": "43",
"name": "PB07",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions UART3_RXD, UART3_TXD, I2C_SDA, GTIM1_TOGN and ATIM_CH3A; sinks/sources up to ±8 mA."
},
{
"number": "44",
"name": "PF03/BOOT",
"type": "input",
"description": "BOOT pin (structure B) sampled at startup to select between the internal bootloader and the user program."
},
{
"number": "45",
"name": "PB08",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions I2C_SCL, UART1_RXD, UART1_TXD, GTIM1_CH3 and ATIM_ETR; sinks/sources up to ±8 mA."
},
{
"number": "46",
"name": "PB09",
"type": "bidirectional",
"description": "Standard I/O (TC) with alternate functions I2C_SDA, UART1_TXD, UART1_RXD, IR_OUT, GTIM1_CH4 and ATIM_BK; sinks/sources up to ±8 mA."
},
{
"number": "47",
"name": "VSS",
"type": "power_in",
"description": "Ground reference for the digital supply domain."
},
{
"number": "48",
"name": "VDD",
"type": "power_in",
"description": "Digital supply for the I/O ports and internal regulator, 1.65 V to 5.5 V; all VDD pins must be powered at the same voltage."
},
{
"number": "49",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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: Pin 1 is printed as 'Vcore' in Table 5-2 with no pin type or description. The type power_out is infe; Table 5-2 leaves the 'pin type' column blank for power pins and the Vcore row, and does not state el; The QFN48 pin-diagram text (Figure 5-2) is garbled in the extraction, so the QFN48 pin numbers were ",
"exposed pad 49 added from the footprint"
],
"pages_sent": 68,
"cost_usd": 0.2511,
"at": "2026-10-18T03:14:19"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589839250725777408",
"pages": 74,
"sha256": "0e51efc1f45a11c9",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 49,
"described": 49,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "cw32l031c8u6.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7,
7,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "cw32l031c8u6-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7,
7,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "e4d84e71a4c23b90c1d02f25589128abd778123672329ae166b2cbf70b7a39b8",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "CW",
"Package": "QFN-48(7x7)",
"Category": "Embedded Processors & Controllers",
"Pins": "49"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "0e51efc1f45a11c97d7d8629397b4777ff42c5e5914fa78d97a4202c6889bbb2",
"rows": [
{
"name": "External main supply voltage (VDD-VSS)",
"symbol": "VDD - VSS",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 35,
"source": "datasheet"
},
{
"name": "External analog supply voltage (VDDA-VSS)",
"symbol": "VDDA-VSS",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 35,
"source": "datasheet"
},
{
"name": "Maximum allowed VDD over VDDA difference",
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