CSM32RV20

{
  "schema_version": 1,
  "type": "component",
  "slug": "csm32rv20",
  "title": "CSM32RV20",
  "brief": "Nanjing Zhongke Microelectronics Microcontrollers (MCU/MPU/SOC), QFN-32-EP(4x4). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "mcu",
    "csm32rv20"
  ],
  "component": {
    "mpn": "CSM32RV20",
    "manufacturer": "Nanjing Zhongke Microelectronics",
    "package": "QFN-32-EP(4x4)",
    "pin_count": 33,
    "category": "MCU",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2208051001_Nanjing-Zhongke-Microelectronics-CSM32RV20_C2916908.pdf",
    "parts": {
      "symbol": "csm32rv20.kicad_sym",
      "footprint": "csm32rv20.kicad_mod",
      "model_3d": "csm32rv20-etched.glb",
      "model_3d_plain": "csm32rv20.glb",
      "model_3d_step": "csm32rv20-etched.step",
      "model_3d_step_plain": "csm32rv20.step",
      "lbr": "csm32rv20.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "PB1",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 1. No dedicated alternate function listed."
      },
      {
        "number": "2",
        "name": "PB0",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 0. No dedicated alternate function listed."
      },
      {
        "number": "3",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO PA15. Muxable to TIMER2_CH4N, UART4_TX or EXTI[15]; also provides the RF detection input."
      },
      {
        "number": "4",
        "name": "PA14",
        "type": "bidirectional",
        "description": "GPIO PA14. Muxable to ADC trigger (ADC_TRI), TIMER2_CH4, UART4_RX or EXTI[14]."
      },
      {
        "number": "5",
        "name": "PA13",
        "type": "bidirectional",
        "description": "GPIO PA13. Muxable to TIMER2_CH3N or EXTI[13]; additional function: ADC voltage reference output REFP."
      },
      {
        "number": "6",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO PA12. Muxable to TIMER2_CH3 or EXTI[12]; additional function: PGA input."
      },
      {
        "number": "7",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO PA11. Muxable to TIMER2_BKIN, TIMER2_CH2N, UART3_TX or EXTI[11]; additional function: ADC voltage reference output REFN."
      },
      {
        "number": "8",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO PA10. Muxable to TIMER1_BKIN, TIMER2_CH2, UART3_RX or EXTI[10]; additional function: ADC_IN9."
      },
      {
        "number": "9",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO PA9. Muxable to TIMER1_CH1, UART1_TX, TIMER2_CH1N or EXTI[9]; additional function: ADC_IN8."
      },
      {
        "number": "10",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO PA8. Muxable to I2C SDA, UART1_RX, TIMER2_CH1 or EXTI[8]; additional function: ADC_IN7."
      },
      {
        "number": "11",
        "name": "NRST",
        "type": "input",
        "description": "External reset input, active-low. Drive low to reset the MCU."
      },
      {
        "number": "12",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO PA7. Muxable to I2C SCL, SPI MOSI, TIMER1_CH4N or EXTI[7]; additional function: ADC_IN6."
      },
      {
        "number": "13",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO PA6. Muxable to UART1_TX, SPI MISO, TIMER1_CH4 or EXTI[6]; additional function: ADC_IN5."
      },
      {
        "number": "14",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO PA5. Muxable to UART1_RX, SPI SCK, TIMER1_CH3N or EXTI[5]; additional function: ADC_IN4."
      },
      {
        "number": "15",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO PA4. Muxable to SPI MOSI, TIMER1_CH1IN, TIMER1_CH3, UART2_TX or EXTI[4]; additional function: ADC_IN3."
      },
      {
        "number": "16",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO PA3. Muxable to SPI MISO, TIMER1_CH1N, TIMER1_CH2N, UART2_RX or EXTI[3]; additional function: ADC_IN2."
      },
      {
        "number": "17",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO PA2. Muxable to SPI SCK, TIMER1_CH1, TIMER1_CH2 or EXTI[2]."
      },
      {
        "number": "18",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO PA1. Muxable to cJTAG TMSC, I2C SDA, TIMER1_CH1N or EXTI[1]."
      },
      {
        "number": "19",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO PA0. Muxable to cJTAG TCKC, I2C SCL, TIMER1_CH1 or EXTI[0]."
      },
      {
        "number": "20",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply, 1.8-5.5 V (VDD ≤ 4.8 V for ADC full-scale operation)."
      },
      {
        "number": "21",
        "name": "PB13",
        "type": "bidirectional",
        "description": "GPIO PB13; additional function OSC_OUT (external crystal drive output)."
      },
      {
        "number": "22",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO PB12; additional function OSC_IN (external crystal input)."
      },
      {
        "number": "23",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO PB11; additional function COMP3 negative input (COMP3-)."
      },
      {
        "number": "24",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO PB10; additional function COMP3 positive input (COMP3+)."
      },
      {
        "number": "25",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO PB9; additional function COMP2 negative input (COMP2-)."
      },
      {
        "number": "26",
        "name": "PB8",
        "type": "bidirectional",
        "description": "GPIO PB8; additional function COMP2 positive input (COMP2+)."
      },
      {
        "number": "27",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO PB7; additional function COMP1 negative input (COMP1-)."
      },
      {
        "number": "28",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO PB6; additional function COMP1 positive input (COMP1+)."
      },
      {
        "number": "29",
        "name": "PB5",
        "type": "bidirectional",
        "description": "General-purpose I/O port B bit 5. No dedicated alternate function listed on this variant (E77Q6). On the E77N6 variant this pin is VCAP instead."
      },
      {
        "number": "30",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO PB4; alternate function SPI2_MISO."
      },
      {
        "number": "31",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO PB3; alternate function SPI2_MOSI."
      },
      {
        "number": "32",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO PB2; alternate function SPI2_SCK."
      },
      {
        "number": "33",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground. Exposed thermal/ground pad on the bottom of the QFN package; must be soldered to PCB ground."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2208051001_Nanjing-Zhongke-Microelectronics-CSM32RV20_C2916908.pdf",
        "pages": 235,
        "sha256": "c175e7d3b3828530",
        "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": "csm32rv20.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "csm32rv20-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": "b98bcce3f21e38cf7f3003d3b2f731e3d1503f797f3577a53839ccaa2097adfa",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nanjing Zhongke Microelectronics",
      "Package": "QFN-32-EP(4x4)",
      "Category": "MCU",
      "Pins": "33"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "csm32rv20"
  ],
  "discovery_pitch": "CSM32RV20 (Nanjing Zhongke Microelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "csm32rv20.kicad_sym",
    "csm32rv20.kicad_mod",
    "csm32rv20.glb",
    "csm32rv20.step",
    "csm32rv20-etched.step",
    "csm32rv20.lbr",
    "docs/hero.png",
    "docs/csm32rv20-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CSM32RV20E77Q6",
      "kind": "packaging"
    },
    {
      "mpn": "CSM32RV20E77N6",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T19:34:38.711Z"
}