STC8A8K64D4-45I-LQFP48

{
  "schema_version": 1,
  "type": "component",
  "slug": "stc8a8k64d4-45i-lqfp48",
  "title": "STC8A8K64D4-45I-LQFP48",
  "brief": "STC Micro Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "mcu",
    "stc8a8k64d4-45i-lqfp48"
  ],
  "component": {
    "mpn": "STC8A8K64D4-45I-LQFP48",
    "manufacturer": "STC Micro",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "MCU",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0c04d7cdc4c91bb5805f0ead53f99a69.pdf",
    "parts": {
      "symbol": "stc8a8k64d4-45i-lqfp48.kicad_sym",
      "footprint": "stc8a8k64d4-45i-lqfp48.kicad_mod",
      "model_3d": "stc8a8k64d4-45i-lqfp48-etched.glb",
      "model_3d_plain": "stc8a8k64d4-45i-lqfp48.glb",
      "model_3d_step": "stc8a8k64d4-45i-lqfp48-etched.step",
      "model_3d_step_plain": "stc8a8k64d4-45i-lqfp48.step",
      "lbr": "stc8a8k64d4-45i-lqfp48.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "P5.2/RxD4_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P5.2. Alternate: UART4 receive (RxD4_2)."
      },
      {
        "number": "2",
        "name": "P5.3/TxD4_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P5.3. Alternate: UART4 transmit (TxD4_2)."
      },
      {
        "number": "3",
        "name": "P1.1/ADC1/PWM1_2/TxD2",
        "type": "bidirectional",
        "description": "General-purpose I/O P1.1. Alternates: 12-bit ADC channel 1, enhanced PWM channel 1 output (PWM1_2), UART2 transmit (TxD2)."
      },
      {
        "number": "4",
        "name": "P1.2/ADC2/PWM2_2/SS/T2/ECI/ADC_ETR",
        "type": "bidirectional",
        "description": "General-purpose I/O P1.2. Alternates: ADC channel 2, PWM2 output, SPI slave-select, Timer 2 external clock input, PCA external pulse input (ECI), ADC external trigger (ADC_ETR)."
      },
      {
        "number": "5",
        "name": "P1.3/ADC3/PWM3_2/MOSI/T2CLKO",
        "type": "bidirectional",
        "description": "General-purpose I/O P1.3. Alternates: ADC channel 3, PWM3 output, SPI MOSI, Timer 2 divided-clock output (T2CLKO)."
      },
      {
        "number": "6",
        "name": "P1.4/ADC4/PWM4_2/MISO/SDA/CCP3",
        "type": "bidirectional",
        "description": "General-purpose I/O P1.4. Alternates: ADC channel 4, PWM4 output, SPI MISO, I2C SDA (default mapping), PCA CCP3 capture/compare."
      },
      {
        "number": "7",
        "name": "P4.4/RD/TxD_4",
        "type": "bidirectional",
        "description": "General-purpose I/O P4.4. Alternates: external-bus read strobe (RD), UART1 transmit alt-4 (TxD_4)."
      },
      {
        "number": "8",
        "name": "P1.5/ADC5/PWM5_2/SCLK/SCL/CCP2",
        "type": "bidirectional",
        "description": "General-purpose I/O P1.5. Alternates: ADC channel 5, PWM5 output, SPI SCLK, I2C SCL (default mapping), PCA CCP2 capture/compare."
      },
      {
        "number": "9",
        "name": "P1.6/ADC6/RxD_3/PWM6_2/MCLKO_2/CCP1/XTALO",
        "type": "bidirectional",
        "description": "General-purpose I/O P1.6. Alternates: ADC channel 6, UART1 receive alt-3 (RxD_3), PWM6 output, master clock divided output (MCLKO_2), PCA CCP1, external crystal output (XTALO)."
      },
      {
        "number": "10",
        "name": "P1.7/ADC7/TxD_3/PWM7_2/CCP0/XTALI",
        "type": "bidirectional",
        "description": "General-purpose I/O P1.7. Alternates: ADC channel 7, UART1 transmit alt-3 (TxD_3), PWM7 output, PCA CCP0, external crystal / external clock input (XTALI)."
      },
      {
        "number": "11",
        "name": "ADC_AGnd",
        "type": "power_in",
        "description": "ADC analog ground reference. Tie to system GND via a clean analog return."
      },
      {
        "number": "12",
        "name": "ADC_VRef+",
        "type": "power_in",
        "description": "ADC positive voltage reference input. External reference required in range 2.4 V to MCU-VCC."
      },
      {
        "number": "13",
        "name": "ADC_AVcc",
        "type": "power_in",
        "description": "ADC analog supply. Connect to MCU VCC via ferrite/RC filter for best analog performance."
      },
      {
        "number": "14",
        "name": "P5.4/NRST/MCLKO",
        "type": "bidirectional",
        "description": "General-purpose I/O P5.4. Alternates: active-low external reset (NRST), master clock divided output (MCLKO). Function selected in RSTCFG / on-chip option bytes."
      },
      {
        "number": "15",
        "name": "Vcc",
        "type": "power_in",
        "description": "Main digital supply pin. Operating range per datasheet (typ 2.5 V - 5.5 V for -45I grade). Decouple with 10 uF bulk + 0.1 uF ceramic close to the pin."
      },
      {
        "number": "16",
        "name": "P5.5",
        "type": "bidirectional",
        "description": "General-purpose I/O P5.5. No alternate function on this variant."
      },
      {
        "number": "17",
        "name": "Gnd",
        "type": "power_in",
        "description": "Digital ground return pin."
      },
      {
        "number": "18",
        "name": "P4.0/WR_3/RxD2_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P4.0. Alternates: external-bus write strobe alt-3 (WR_3), UART2 receive alt-2 (RxD2_2)."
      },
      {
        "number": "19",
        "name": "P3.0/RxD/CCP3_4/INT4",
        "type": "bidirectional",
        "description": "General-purpose I/O P3.0. Alternates: UART1 receive (RxD, default mapping), PCA CCP3 alt-4, external interrupt 4 (INT4)."
      },
      {
        "number": "20",
        "name": "P3.1/TxD/CCP2_4",
        "type": "bidirectional",
        "description": "General-purpose I/O P3.1. Alternates: UART1 transmit (TxD, default mapping), PCA CCP2 alt-4."
      },
      {
        "number": "21",
        "name": "P3.2/INT0/CCP1_4/SCLK_4/SCL_4",
        "type": "bidirectional",
        "description": "General-purpose I/O P3.2. Alternates: external interrupt 0 (INT0), PCA CCP1 alt-4, SPI SCLK alt-4, I2C SCL alt-4."
      },
      {
        "number": "22",
        "name": "P3.3/INT1/CCP0_4/MISO_4/SDA_4",
        "type": "bidirectional",
        "description": "General-purpose I/O P3.3. Alternates: external interrupt 1 (INT1), PCA CCP0 alt-4, SPI MISO alt-4, I2C SDA alt-4."
      },
      {
        "number": "23",
        "name": "P3.4/T0/T1CLKO/MOSI_4/CMPO",
        "type": "bidirectional",
        "description": "General-purpose I/O P3.4. Alternates: Timer 0 external clock in (T0), Timer 1 divided-clock output (T1CLKO), SPI MOSI alt-4, comparator output (CMPO)."
      },
      {
        "number": "24",
        "name": "P3.5/T1/T0CLKO/ECI_4/SS_4/PWMFLT",
        "type": "bidirectional",
        "description": "General-purpose I/O P3.5. Alternates: Timer 1 external clock in (T1), Timer 0 divided-clock output (T0CLKO), PCA ECI alt-4, SPI SS alt-4, PWM fault-detect input (PWMFLT)."
      },
      {
        "number": "25",
        "name": "P5.0/RxD3_2/CMP+_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P5.0. Alternates: UART3 receive alt-2 (RxD3_2), analog comparator positive input CMP+_2."
      },
      {
        "number": "26",
        "name": "P5.1/TxD3_2/CMP+_3",
        "type": "bidirectional",
        "description": "General-purpose I/O P5.1. Alternates: UART3 transmit alt-2 (TxD3_2), analog comparator positive input CMP+_3."
      },
      {
        "number": "27",
        "name": "P3.6/INT2/WR_2/RxD_2/CMP-",
        "type": "bidirectional",
        "description": "General-purpose I/O P3.6. Alternates: external interrupt 2 (INT2), external-bus write strobe alt-2 (WR_2), UART1 receive alt-2 (RxD_2), analog comparator negative input (CMP-)."
      },
      {
        "number": "28",
        "name": "P3.7/INT3/RD_2/TxD_2/CMP+",
        "type": "bidirectional",
        "description": "General-purpose I/O P3.7. Alternates: external interrupt 3 (INT3), external-bus read strobe alt-2 (RD_2), UART1 transmit alt-2 (TxD_2), comparator positive input (CMP+)."
      },
      {
        "number": "29",
        "name": "P4.1/ALE/CMPO_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P4.1. Alternates: external-bus address-latch enable (ALE), comparator output alt-2 (CMPO_2)."
      },
      {
        "number": "30",
        "name": "P2.0/A8/PWM0",
        "type": "bidirectional",
        "description": "General-purpose I/O P2.0. Alternates: external-bus address line A8, enhanced PWM channel 0 output (PWM0)."
      },
      {
        "number": "31",
        "name": "P4.2/RD_3/TxD2_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P4.2. Alternates: external-bus read strobe alt-3 (RD_3), UART2 transmit alt-2 (TxD2_2)."
      },
      {
        "number": "32",
        "name": "P2.1/A9/PWM1",
        "type": "bidirectional",
        "description": "General-purpose I/O P2.1. Alternates: address line A9, PWM1 output."
      },
      {
        "number": "33",
        "name": "P2.2/A10/PWM2/SS_2/ECI_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P2.2. Alternates: address line A10, PWM2 output, SPI slave-select alt-2 (SS_2), PCA ECI alt-2."
      },
      {
        "number": "34",
        "name": "P2.3/A11/PWM3/MOSI_2/CCP0_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P2.3. Alternates: address line A11, PWM3 output, SPI MOSI alt-2, PCA CCP0 alt-2."
      },
      {
        "number": "35",
        "name": "P2.4/A12/PWM4/MISO_2/SDA_2/CCP1_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P2.4. Alternates: address line A12, PWM4 output, SPI MISO alt-2, I2C SDA alt-2, PCA CCP1 alt-2."
      },
      {
        "number": "36",
        "name": "P2.5/A13/PWM5/SCLK_2/SCL_2/CCP2_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P2.5. Alternates: address line A13, PWM5 output, SPI SCLK alt-2, I2C SCL alt-2, PCA CCP2 alt-2."
      },
      {
        "number": "37",
        "name": "P2.6/A14/PWM6/CCP3_2",
        "type": "bidirectional",
        "description": "General-purpose I/O P2.6. Alternates: address line A14, PWM6 output, PCA CCP3 alt-2."
      },
      {
        "number": "38",
        "name": "P2.7/A15/PWM7",
        "type": "bidirectional",
        "description": "General-purpose I/O P2.7. Alternates: address line A15, PWM7 output."
      },
      {
        "number": "39",
        "name": "P0.0/AD0/ADC8/RxD3",
        "type": "bidirectional",
        "description": "General-purpose I/O P0.0. Alternates: external-bus address/data line AD0, ADC channel 8, UART3 receive (RxD3)."
      },
      {
        "number": "40",
        "name": "P0.1/AD1/ADC9/TxD3",
        "type": "bidirectional",
        "description": "General-purpose I/O P0.1. Alternates: AD1, ADC channel 9, UART3 transmit (TxD3)."
      },
      {
        "number": "41",
        "name": "P0.2/AD2/ADC10/RxD4",
        "type": "bidirectional",
        "description": "General-purpose I/O P0.2. Alternates: AD2, ADC channel 10, UART4 receive (RxD4)."
      },
      {
        "number": "42",
        "name": "P4.3/WR/RxD_4",
        "type": "bidirectional",
        "description": "General-purpose I/O P4.3. Alternates: external-bus write strobe (WR, default), UART1 receive alt-4 (RxD_4)."
      },
      {
        "number": "43",
        "name": "P0.3/AD3/ADC11/TxD4",
        "type": "bidirectional",
        "description": "General-purpose I/O P0.3. Alternates: AD3, ADC channel 11, UART4 transmit (TxD4)."
      },
      {
        "number": "44",
        "name": "P0.4/AD4/ADC12/T3",
        "type": "bidirectional",
        "description": "General-purpose I/O P0.4. Alternates: AD4, ADC channel 12, Timer 3 external clock input (T3)."
      },
      {
        "number": "45",
        "name": "P0.5/AD5/ADC13/T3CLKO",
        "type": "bidirectional",
        "description": "General-purpose I/O P0.5. Alternates: AD5, ADC channel 13, Timer 3 divided-clock output (T3CLKO)."
      },
      {
        "number": "46",
        "name": "P0.6/AD6/ADC14/T4",
        "type": "bidirectional",
        "description": "General-purpose I/O P0.6. Alternates: AD6, ADC channel 14, Timer 4 external clock input (T4)."
      },
      {
        "number": "47",
        "name": "P0.7/AD7/T4CLKO",
        "type": "bidirectional",
        "description": "General-purpose I/O P0.7. Alternates: AD7, Timer 4 divided-clock output (T4CLKO). (No ADC channel on this variant.)"
      },
      {
        "number": "48",
        "name": "P1.0/ADC0/PWM0_2/RxD2",
        "type": "bidirectional",
        "description": "General-purpose I/O P1.0. Alternates: ADC channel 0, PWM0 output, UART2 receive (RxD2)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/0c04d7cdc4c91bb5805f0ead53f99a69.pdf",
        "pages": 1168,
        "sha256": "0df2991ceeae5ee1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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  "metadata": {
    "specs": {
      "Manufacturer": "STC Micro",
      "Package": "LQFP-48(7x7)",
      "Category": "MCU",
      "Pins": "48"
    }
  },
  "variants": [
    {
      "mpn": "STC8A8K64D4-45I-LQFP48",
      "kind": "packaging"
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    {
      "mpn": "STC8A8K64D4-45I-QFN48",
      "kind": "unknown"
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    {
      "mpn": "STC8A8K64D4-45I-LQFP64",
      "kind": "unknown"
    },
    {
      "mpn": "STC8A8K64D4-45I-QFN64",
      "kind": "unknown"
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    {
      "mpn": "STC8A8K64D4-45I-LQFP44",
      "kind": "unknown"
    },
    {
      "mpn": "STC8A8K64D4-45I-PDIP40",
      "kind": "unknown"
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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  "updated_at": "2026-09-25T08:29:08.782Z"
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