component
STC8H1K28-36I-QFN32
Public Made by Adomby adom
STC Micro Microcontrollers (MCU/MPU/SOC), QFN-32-EP(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": "stc8h1k28-36i-qfn32",
"title": "STC8H1K28-36I-QFN32",
"brief": "STC Micro Microcontrollers (MCU/MPU/SOC), QFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"stc8h1k28-36i-qfn32",
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"component": {
"mpn": "STC8H1K28-36I-QFN32",
"manufacturer": "STC Micro",
"package": "QFN-32-EP(4x4)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontrollers (MCU/MPU/SOC)",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756362141073059840",
"parts": {
"symbol": "stc8h1k28-36i-qfn32.kicad_sym",
"footprint": "stc8h1k28-36i-qfn32.kicad_mod",
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"lbr": "stc8h1k28-36i-qfn32.lbr"
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"distributor_links": {
"lcsc": "C915680"
},
"distributor_check": {
"checked_at": "2026-10-19T05:00:15Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "P1.0",
"type": "bidirectional",
"description": "Standard I/O port P1.0 (high-impedance input after power-on, so mode must be set before use), with alternate functions ADC0 analog input, RxD2 UART2 receive, and PWM1P capture/output."
},
{
"number": "2",
"name": "P1.1",
"type": "bidirectional",
"description": "Standard I/O port P1.1 (high-impedance input after power-on, so mode must be set before use), with alternate functions ADC1 analog input, TxD2 UART2 transmit, and PWM1N output."
},
{
"number": "3",
"name": "P1.2",
"type": "bidirectional",
"description": "Standard I/O port P1.2, with alternate functions ADC2 analog input, SS SPI slave select, T2 timer 2 external clock input, and PWM2P capture/output."
},
{
"number": "4",
"name": "P1.3",
"type": "bidirectional",
"description": "Standard I/O port P1.3, with alternate functions ADC3 analog input, MOSI SPI master output, T2CLKO timer 2 clock output, and PWM2N output."
},
{
"number": "5",
"name": "P1.4",
"type": "bidirectional",
"description": "Standard I/O port P1.4, with alternate functions ADC4 analog input, MISO SPI master input, SDA I2C data, and PWM3P capture/output."
},
{
"number": "6",
"name": "P1.5",
"type": "bidirectional",
"description": "Standard I/O port P1.5, with alternate functions ADC5 analog input, SCLK SPI clock, SCL I2C clock, and PWM3N output."
},
{
"number": "7",
"name": "P1.6",
"type": "bidirectional",
"description": "Standard I/O port P1.6, with alternate functions ADC6 analog input, RxD_3 UART1 receive, PWM4P capture/output, MCLKO_2 master clock output, and XTALO external crystal output."
},
{
"number": "8",
"name": "P1.7",
"type": "bidirectional",
"description": "Standard I/O port P1.7, with alternate functions ADC7 analog input, TxD_3 UART1 transmit, PWM4N and PWM5_2 outputs, and XTALI external crystal or external clock input."
},
{
"number": "9",
"name": "P5.4",
"type": "bidirectional",
"description": "I/O port P5.4 defaults to I/O after reset and can be set to active-low nRST reset input through ISP (its 4K pull-up stays on when used as reset); it also provides MCLKO and PWM6_2."
},
{
"number": "10",
"name": "Vcc",
"type": "power_in",
"description": "Power supply pin for the MCU, operating from 1.9 V to 5.5 V, which also supplies the ADC (AVcc)."
},
{
"number": "11",
"name": "ADC_VRef+",
"type": "input",
"description": "ADC external reference voltage input that must be driven from an external reference of 2.4 V to MCU-VCC, since floating it causes leakage; it may be tied directly to VCC when precision requirements are low."
},
{
"number": "12",
"name": "Gnd",
"type": "power_in",
"description": "Ground pin, also used as the ADC analog ground (AGnd)."
},
{
"number": "13",
"name": "P3.0",
"type": "bidirectional",
"description": "Port P3.0 is quasi-bidirectional with weak pull-up after power-on, with functions RxD UART1 receive and INT4 external interrupt 4; P3.0, P3.1 and P3.2 must not all be low at power-up or the chip enters USB download mode."
},
{
"number": "14",
"name": "P3.1",
"type": "bidirectional",
"description": "Port P3.1 is quasi-bidirectional with weak pull-up after power-on, with function TxD UART1 transmit; it is one of the download/emulation interface pins."
},
{
"number": "15",
"name": "P3.2",
"type": "bidirectional",
"description": "Standard I/O port P3.2, with alternate functions ADC10 analog input, INT0 external interrupt 0, SCLK_4 and SCL_4 serial clocks, and PWMETI/PWMETI2 external trigger inputs; it is also the USB download check pin at power-up."
},
{
"number": "16",
"name": "P3.3",
"type": "bidirectional",
"description": "Standard I/O port P3.3, with alternate functions ADC11 analog input, INT1 external interrupt 1, MISO_4 and SDA_4 serial data, PWM4N_4 output, and PWM7_2 capture/output."
},
{
"number": "17",
"name": "P3.4",
"type": "bidirectional",
"description": "Standard I/O port P3.4, with alternate functions ADC12 analog input, T0 timer 0 external clock input, T1CLKO timer 1 clock output, MOSI_4, PWM4P_4 and PWM8_2, and CMPO comparator output."
},
{
"number": "18",
"name": "P3.5",
"type": "bidirectional",
"description": "Standard I/O port P3.5, with alternate functions ADC13 analog input, T1 timer 1 external clock input, T0CLKO timer 0 clock output, SS_4, and PWMFLT/PWMFLT2 abnormal-detection inputs."
},
{
"number": "19",
"name": "P3.6",
"type": "bidirectional",
"description": "Standard I/O port P3.6, with alternate functions INT2 external interrupt 2, RxD_2 UART1 receive, and CMP- comparator negative input."
},
{
"number": "20",
"name": "P3.7",
"type": "bidirectional",
"description": "Standard I/O port P3.7, with alternate functions INT3 external interrupt 3, TxD_2 UART1 transmit, and CMP+ comparator positive input."
},
{
"number": "21",
"name": "P2.0",
"type": "bidirectional",
"description": "Standard I/O port P2.0, with alternate functions PWM1P_2 capture/output and PWM5 capture/output."
},
{
"number": "22",
"name": "P2.1",
"type": "bidirectional",
"description": "Standard I/O port P2.1, with alternate functions PWM1N_2 output and PWM6 capture/output."
},
{
"number": "23",
"name": "P2.2",
"type": "bidirectional",
"description": "Standard I/O port P2.2, with alternate functions PWM2P_2 capture/output, PWM7 capture/output, and SS_2 SPI slave select."
},
{
"number": "24",
"name": "P2.3",
"type": "bidirectional",
"description": "Standard I/O port P2.3, with alternate functions PWM2N_2 output, PWM8 capture/output, and MOSI_2 SPI master output."
},
{
"number": "25",
"name": "P2.4",
"type": "bidirectional",
"description": "Standard I/O port P2.4, with alternate functions PWM3P_2 capture/output, MISO_2 SPI master input, and SDA_2 I2C data."
},
{
"number": "26",
"name": "P2.5",
"type": "bidirectional",
"description": "Standard I/O port P2.5, with alternate functions PWM3N_2 output, SCLK_2 SPI clock, and SCL_2 I2C clock."
},
{
"number": "27",
"name": "P2.6",
"type": "bidirectional",
"description": "Standard I/O port P2.6, with alternate function PWM4P_2 capture/output."
},
{
"number": "28",
"name": "P2.7",
"type": "bidirectional",
"description": "Standard I/O port P2.7, with alternate function PWM4N_2 output."
},
{
"number": "29",
"name": "P0.0",
"type": "bidirectional",
"description": "Standard I/O port P0.0, with alternate functions ADC8 analog input, T3 timer 3 external clock input, and PWM5_3 capture/output."
},
{
"number": "30",
"name": "P0.1",
"type": "bidirectional",
"description": "Standard I/O port P0.1, with alternate functions ADC9 analog input, T3CLKO timer 3 clock output, and PWM6_3 capture/output."
},
{
"number": "31",
"name": "P0.2",
"type": "bidirectional",
"description": "Standard I/O port P0.2, with alternate functions ADC10 analog input, T4 timer 4 external clock input, and PWM7_3 capture/output."
},
{
"number": "32",
"name": "P0.3",
"type": "bidirectional",
"description": "Standard I/O port P0.3, with alternate functions ADC11 analog input, T4CLKO timer 4 clock output, and PWM8_3 capture/output."
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
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"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The exposed pad of the QFN-32-EP(4x4) package is not identified anywhere in the provided text (the Q; The datasheet uses one shared pin-number column for LQFP32 and QFN32 (figure on page 248, table on p; Pin types are assigned as bidirectional for all port pins. The description table labels some alterna",
"exposed pad 33 added from the footprint",
"12/33 pins cited to the wrong page (name found elsewhere): ['21:P2.0@p255', '22:P2.1@p255', '23:P2.2@p255', '24:P2.3@p255']"
],
"pages_sent": 111,
"cost_usd": 0.9649,
"at": "2026-10-19T04:59:00"
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"pages": 2180,
"sha256": "046aea020e4685f3",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"units": "mm",
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"seat": "z = 0",
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"zmin_mm": 0,
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"footprint_binding": "identity",
"sha256": "7b482a511cdf2cf875c31931f9fea7f745b8dac2ea6203531cd6604f40a290cb",
"checked": "2026-10-19",
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"sha256": "5908ecaf0cffab9fcdd0baaca92735f4192e3b7ca8934e88a2e4af900b1e9bcc",
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},
"metadata": {
"specs": {
"Manufacturer": "STC Micro",
"Package": "QFN-32-EP(4x4)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
},
"appearance": {
"housing": {
"quote": "Accumulator contents and the contents of a sixteen-bit base register, which may be either the Data Pointer or the PC. In the latter case, the PC is incremented to the address of the following",
"page": 1043,
"doc": "ds.pdf",
"material": "PC"
},
"version": 1,
"datasheet_sha256": "046aea020e4685f3aa61520dcb1844f7daa50091c51b0bc9a1bcb8d472f5e1fb"
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"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"name": "Storage temperature (存储温度)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "℃",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1851,
"source": "datasheet"
},
{
"name": "Operating temperature (工作温度)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 1851,
"source": "datasheet"
},
{
"name": "Operating voltage (工作电压)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": 1.9,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 1851,
"source": "datasheet"
},
{
"name": "VDD to GND voltage (VDD 对地电压)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 1851,
"source": "datasheet"
},
{
"name": "I/O to GND voltage (I/O 口对地电压)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "maximum printed as VDD+0.3",
"source_page": 1851,
"source": "datasheet"
},
{
"name": "Input low voltage, Schmitt trigger on (输入低电平)",
"symbol": "VIL1",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.99,
"conditions": "VDD=3.3V, 25℃; 打开施密特触发",
"source_page": 1852,
"source": "datasheet"
},
{
"name": "Input low voltage, Schmitt trigger off (输入低电平)",
"symbol": "VIL1",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1.07,
"conditions": "VDD=3.3V, 25℃; 关闭施密特触发",
"source_page": 1852,
"source": "datasheet"
},
{
"name": "Input high voltage, normal I/O, Schmitt trigger on (输入高电平（普通 I/O）)",
"symbol": "VIH1",
"kind": "electrical",
"unit": "V",
"min": 1.18,
"typ": null,
"max": null,
"conditions": "VDD=3.3V, 25℃; 打开施密特触发",
"source_page": 1852,
"source": "datasheet"
},
{
"name": "Input high voltage, normal I/O, Schmitt trigger off (输入高电平（普通 I/O）)",
"symbol": "VIH1",
"kind": "electrical",
"unit": "V",
"min": 1.09,
"typ": null,
"max": null,
"conditions": "VDD=3.3V, 25℃; 关闭施密特触发",
"source_page": 1852,
"source": "datasheet"
},
{
"name": "Logic 0 input current (逻辑 0 输入电流)",
"symbol": "IIL",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": null,
"max": 50,
"conditions": "VDD=3.3V, 25℃; 端口电压 0V",
"source_page": 1852,
"source": "datasheet"
},
{
"name": "Logic 1 to 0 transition current (逻辑 1 到 0 的转移电流)",
"symbol": "ITL",
"kind": "electrical",
"unit": "uA",
"min": 100,
"typ": 270,
"max": 600,
"conditions": "VDD=3.3V, 25℃; 端口电压 2.0V",
"source_page": 1852,
"source": "datasheet"
},
{
"name": "I/O port pull-up resistance (I/O 口上拉电阻)",
"symbol": "RPU",
"kind": "electrical",
"unit": "KΩ",
"min": 5.8,
"typ": 5.9,
"max": 6,
"conditions": "VDD=3.3V, 25℃",
"source_page": 1852,
"source": "datasheet"
}
]
}
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