component
CH32V103C8T6
Public Made by Adomby adom
WCH Jiangsu Qin Heng Microcontrollers (MCU/MPU/SOC), LQFP-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": "ch32v103c8t6",
"title": "CH32V103C8T6",
"brief": "WCH Jiangsu Qin Heng Microcontrollers (MCU/MPU/SOC), LQFP-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",
"ch32v103c8t6",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "CH32V103C8T6",
"manufacturer": "WCH Jiangsu Qin Heng",
"package": "LQFP-48(7x7)",
"pin_count": 48,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618866790709673984",
"parts": {
"symbol": "ch32v103c8t6.kicad_sym",
"footprint": "ch32v103c8t6.kicad_mod",
"model_3d": "ch32v103c8t6-hero.glb",
"model_3d_plain": "ch32v103c8t6-etched.glb",
"model_3d_step": "ch32v103c8t6-etched.step",
"model_3d_step_plain": "ch32v103c8t6.step",
"lbr": "ch32v103c8t6.lbr"
},
"distributor_links": {
"lcsc": "C2764428"
},
"distributor_check": {
"checked_at": "2026-10-19T00:43:32Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "VBAT",
"type": "power_in",
"description": "Backup-domain supply, 1.8 V to 5.5 V and must not exceed VDD; it powers the RTC, the external 32 kHz oscillator and the backup registers when VDD is removed."
},
{
"number": "2",
"name": "PC13-TAMPER-RTC",
"type": "bidirectional",
"description": "General-purpose I/O when the backup domain is powered from VDD; acts as TAMPER input, RTC alarm or second output when powered from VBAT, and in VDD mode as output it is limited to 2 MHz with max 30 pF load."
},
{
"number": "3",
"name": "PC14-OSC32_IN",
"type": "bidirectional",
"description": "GPIO or LSE (32.768 kHz oscillator) input when the backup domain is powered from VDD; restricted to the LSE function only when powered from VBAT."
},
{
"number": "4",
"name": "PC15-OSC32_OUT",
"type": "bidirectional",
"description": "GPIO or LSE (32.768 kHz oscillator) output when the backup domain is powered from VDD; restricted to the LSE function only when powered from VBAT."
},
{
"number": "5",
"name": "OSC_IN",
"type": "input",
"description": "External high-speed oscillator input (4-16 MHz crystal or resonator) that is the default function after reset; can be reconfigured as PD0."
},
{
"number": "6",
"name": "OSC_OUT",
"type": "output",
"description": "External high-speed oscillator output (4-16 MHz crystal or resonator) that is the default function after reset; can be reconfigured as PD1."
},
{
"number": "7",
"name": "NRST",
"type": "bidirectional",
"description": "External reset pin; input low level max 0.8 V and input high level min 0.65·VDD, with 330 mV Schmitt hysteresis."
},
{
"number": "8",
"name": "VSSA",
"type": "power_in",
"description": "Analog ground for the ADC, temperature sensor and PLL analog section; must be connected to VSS."
},
{
"number": "9",
"name": "VDDA",
"type": "power_in",
"description": "Analog supply for the ADC, temperature sensor and PLL, 2.7 V to 5.5 V without ADC (must equal VDD) or 3.0 V to 5.5 V when the ADC is used; must be connected to VDD."
},
{
"number": "10",
"name": "PA0-WKUP",
"type": "bidirectional",
"description": "Analog-capable GPIO that also serves as WKUP wake-up input (rising edge) with ADC_IN0, TIM2_CH1/TIM2_ETR and USART2_CTS."
},
{
"number": "11",
"name": "PA1",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN1, TIM2_CH2 and USART2_RTS alternate functions."
},
{
"number": "12",
"name": "PA2",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN2, TIM2_CH3 and USART2_TX alternate functions."
},
{
"number": "13",
"name": "PA3",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN3, TIM2_CH4 and USART2_RX alternate functions."
},
{
"number": "14",
"name": "PA4",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN4, SPI1_NSS and USART2_CK alternate functions."
},
{
"number": "15",
"name": "PA5",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN5 and SPI1_SCK alternate functions."
},
{
"number": "16",
"name": "PA6",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN6, SPI1_MISO and TIM3_CH1 alternate functions; TIM1_BKIN_1 is available by remap."
},
{
"number": "17",
"name": "PA7",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN7, SPI1_MOSI and TIM3_CH2 alternate functions; TIM1_CH1N_1 is available by remap."
},
{
"number": "18",
"name": "PB0",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN8 and TIM3_CH3 alternate functions; TIM1_CH2N_1 is available by remap."
},
{
"number": "19",
"name": "PB1",
"type": "bidirectional",
"description": "Analog-capable GPIO with ADC_IN9 and TIM3_CH4 alternate functions; TIM1_CH3N_1 is available by remap."
},
{
"number": "20",
"name": "PB2",
"type": "bidirectional",
"description": "General-purpose I/O that also latches the BOOT1 boot-mode select value."
},
{
"number": "21",
"name": "PB10",
"type": "bidirectional",
"description": "GPIO with I2C2_SCL and USART3_TX alternate functions; TIM2_CH3_1 is available by remap."
},
{
"number": "22",
"name": "PB11",
"type": "bidirectional",
"description": "GPIO with I2C2_SDA and USART3_RX alternate functions; TIM2_CH4_1 is available by remap."
},
{
"number": "23",
"name": "VSS_1",
"type": "power_in",
"description": "Digital ground pin for the I/O and core domain."
},
{
"number": "24",
"name": "VDD_1",
"type": "power_in",
"description": "Digital supply pin, 2.7 V to 5.5 V, for I/O pins, RC oscillators, reset block and internal regulator."
},
{
"number": "25",
"name": "PB12",
"type": "bidirectional",
"description": "GPIO with SPI2_NSS, I2C2_SMBAI, USART3_CK and TIM1_BKIN alternate functions."
},
{
"number": "26",
"name": "PB13",
"type": "bidirectional",
"description": "GPIO with SPI2_SCK, USART3_CTS and TIM1_CH1N alternate functions."
},
{
"number": "27",
"name": "PB14",
"type": "bidirectional",
"description": "GPIO with SPI2_MISO, USART3_RTS and TIM1_CH2N alternate functions."
},
{
"number": "28",
"name": "PB15",
"type": "bidirectional",
"description": "GPIO with SPI2_MOSI and TIM1_CH3N alternate functions."
},
{
"number": "29",
"name": "PA8",
"type": "bidirectional",
"description": "GPIO with USART1_CK, TIM1_CH1 and MCO clock output alternate functions."
},
{
"number": "30",
"name": "PA9",
"type": "bidirectional",
"description": "GPIO with USART1_TX and TIM1_CH2 alternate functions."
},
{
"number": "31",
"name": "PA10",
"type": "bidirectional",
"description": "GPIO with USART1_RX and TIM1_CH3 alternate functions."
},
{
"number": "32",
"name": "PA11",
"type": "bidirectional",
"description": "Analog-capable GPIO with USART1_CTS, USBHDM and TIM1_CH4 alternate functions."
},
{
"number": "33",
"name": "PA12",
"type": "bidirectional",
"description": "Analog-capable GPIO with USART1_RTS, USBHDP and TIM1_ETR alternate functions."
},
{
"number": "34",
"name": "PA13",
"type": "bidirectional",
"description": "Default SWDIO serial-wire debug pin after reset on the C8T6 part; can be reconfigured as PA13 by software."
},
{
"number": "35",
"name": "VSS_2",
"type": "power_in",
"description": "Digital ground pin."
},
{
"number": "36",
"name": "VDD_2",
"type": "power_in",
"description": "Digital supply pin, 2.7 V to 5.5 V."
},
{
"number": "37",
"name": "PA14",
"type": "bidirectional",
"description": "Default SWCLK serial-wire debug clock pin after reset on the C8T6 part; can be reconfigured as PA14 by software."
},
{
"number": "38",
"name": "PA15",
"type": "bidirectional",
"description": "GPIO with TIM2_CH1_1, TIM2_ETR_1 and SPI1_NSS_1 remapped alternate functions."
},
{
"number": "39",
"name": "PB3",
"type": "bidirectional",
"description": "GPIO with TIM2_CH2_1 and SPI1_SCK_1 remapped alternate functions."
},
{
"number": "40",
"name": "PB4",
"type": "bidirectional",
"description": "GPIO with TIM3_CH1_1 and SPI1_MISO_1 remapped alternate functions."
},
{
"number": "41",
"name": "PB5",
"type": "bidirectional",
"description": "GPIO with I2C1_SMBAI, TIM3_CH2_1 and SPI1_MOSI_1 alternate functions."
},
{
"number": "42",
"name": "PB6",
"type": "bidirectional",
"description": "Analog-capable GPIO with I2C1_SCL and TIM4_CH1 alternate functions; USART1_TX_1 is available by remap."
},
{
"number": "43",
"name": "PB7",
"type": "bidirectional",
"description": "Analog-capable GPIO with I2C1_SDA and TIM4_CH2 alternate functions; USART1_RX_1 is available by remap."
},
{
"number": "44",
"name": "BOOT0",
"type": "input",
"description": "Boot-mode select input (TTL/CMOS Schmitt level) that, together with BOOT1, selects main flash, system memory or internal SRAM boot at startup."
},
{
"number": "45",
"name": "PB8",
"type": "bidirectional",
"description": "Analog-capable GPIO with TIM4_CH3 alternate function; I2C1_SCL_1 is available by remap."
},
{
"number": "46",
"name": "PB9",
"type": "bidirectional",
"description": "Analog-capable GPIO with TIM4_CH4 alternate function; I2C1_SDA_1 is available by remap."
},
{
"number": "47",
"name": "VSS_3",
"type": "power_in",
"description": "Digital ground pin."
},
{
"number": "48",
"name": "VDD_3",
"type": "power_in",
"description": "Digital supply pin, 2.7 V to 5.5 V."
}
],
"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: Pins 5 and 6 are OSC_IN/OSC_OUT by default after reset (remappable to PD0/PD1); the functional name ; Pins 34 (PA13/SWDIO) and 37 (PA14/SWCLK) are debug pins by default after reset on the C8T6; the data; Functions of PC13/PC14/PC15 depend on whether the backup domain is powered from VDD or VBAT, as desc"
],
"pages_sent": 36,
"cost_usd": 0.1924,
"at": "2026-10-19T00:41:03"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618866790709673984",
"pages": 36,
"sha256": "51d2a9f352d2275e",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 48,
"described": 48,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "ch32v103c8t6.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9,
9,
1.5
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
"checked": "2026-10-19",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ch32v103c8t6-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
9,
9,
1.5
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "9caa0c69521d996e72c5fccc7f6363bc234ebd8101edeca45c4c6e0e6d4e994b",
"checked": "2026-10-19",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "WCH Jiangsu Qin Heng",
"Package": "LQFP-48(7x7)",
"Category": "Embedded Processors & Controllers",
"Pins": "48"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "51d2a9f352d2275e52443df131061ec550d674b965722a948f1e6e3393ae93e1",
"rows": [
{
"name": "Operating ambient temperature",
"symbol": "TA",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Storage ambient temperature",
"symbol": "TS",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 105,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "External main supply voltage (VDD and VDDA)",
"symbol": "VDD-VSS",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Input voltage on any pin",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Voltage difference between different supply pins",
"symbol": "|ΔVDDx|",
"kind": "absolute_maximum",
"unit": "mV",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Voltage difference between different ground pins",
"symbol": "|VSSx-VSS|",
"kind": "absolute_maximum",
"unit": "mV",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "ESD voltage (human body model)",
"symbol": "VESD(HBM)",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 4000,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Total current through VDD/VDDA supply lines",
"symbol": "IVDD",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Total current through VSS ground line",
"symbol": "IVss",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Sink current on any I/O and control pin",
"symbol": "IIO",
"kind": "absolute_maximum",
"unit": "mA",
"min": -25,
"typ": null,
"max": null,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Output current on any I/O and control pin",
"symbol": "IIO",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 25,
"conditions": "",
"source_page": 19,
"source": "datasheet"
},
{
"name": "Internal system clock frequency",
"symbol": "FSYSCLK",
"kind": "recommended_operating",
"unit": "MHz",
"min": null,
"typ": null,
"max": 80,
"conditions": "",
"source_page": 20,
"source": "datasheet"
},
{
"name": "Standard operating voltage",
"symbol": "VDD",
"kind": "recommended_operating",
"unit": "V",
"min": 2.7,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 20,
"source": "datasheet"
},
{
"name": "Analog supply voltage (ADC not used)",
"symbol": "VDDA",
"kind": "recommended_operating",
"unit": "V",
"min": 2.7,
"typ": null,
"max": 5.5,
"conditions": "ADC not used; must equal VDD",
"source_page": 20,
"source": "datasheet"
},
{
"name": "Analog supply voltage (ADC used)",
"symbol": "VDDA",
"kind": "recommended_operating",
"unit": "V",
"min": 3,
"typ": null,
"max": 5.5,
"conditions": "ADC used",
"source_page": 20,
"source": "datasheet"
},
{
"name": "Backup domain operating voltage",
"symbol": "VBAT",
"kind": "recommended_operating",
"unit": "V",
"min": 1.8,
"typ": null,
"max": 5.5,
"conditions": "must not exceed VDD",
"source_page": 20,
"source": "datasheet"
},
{
"name": "Ambient operating temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "℃",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 20,
"source": "datasheet"
},
{
"name": "VDD rising slew rate",
"symbol": "tVDD",
"kind": "timing",
"unit": "us/V",
"min": 0,
"typ": null,
"max": null,
"conditions": "VDD rising",
"source_page": 20,
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