component
CH32X033F8P6
Public Made by Adomby adom
WCH Others, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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CH32X033F8P6
WCH · Others · TSSOP-20
CH32X033F8P6 from WCH, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | PA6 | bidirectional | General-purpose I/O with analog input capability (A6), default function MISO, with alternates T3C1, O1N0 and remappable T1BK_1, CK4_1, RTS4_4 selected through AFIO. |
| 2 | PA7 | bidirectional | General-purpose I/O with analog input capability (A7, not applicable to lots whose 5th-from-last lot digit is 0), default function MOSI, sharing this pin with PB0 which is bonded internally, so both must not be configured as outputs at the same time. |
| 3 | PB1 | bidirectional | General-purpose I/O with analog input capability (A9), default function RX4, with alternates O2N1 and remappable T1C3N_1. |
| 4 | PB7 | bidirectional | General-purpose I/O with analog-capable function, default function T1C2N/O2P2/RTS3, and on this TSSOP20 CH32X033 package it can also be used as the RST function (remap RST(3)). |
| 5 | PC16 | bidirectional | General-purpose I/O with analog-capable function, default function UDM (USB D-), sharing this pin with PC11 which is bonded internally so both must not be configured as outputs at the same time, and requiring an external pull-up resistor when the I2C function is used. |
| 6 | PC17 | bidirectional | General-purpose I/O with analog-capable function, default function UDP (USB D+), sharing this pin with PC10 which is bonded internally so both must not be configured as outputs at the same time; PC17 is the BOOT detection pin and is read high at power-up to enter the system boot area. |
| 7 | GND | power_in | Ground reference pin for all voltages on the device. |
| 8 | PC18 | bidirectional | General-purpose I/O, default function DIO (SWDIO serial debug data) with alternate PIOC_IO0 and other remappable functions. |
| 9 | VDD | power_in | Supply pin powering the I/O pins and internal regulator, rated 2 to 5.5 V (must be at least 2.5 V when ADC or PD is used). |
| 10 | PA9 | bidirectional | General-purpose I/O, default function MISO_ (SPI MISO) with alternates RX4_1, CTS1_2, MOSI_1, MISO_2, T2BK_1 and T2BK_3 selected through AFIO. |
| 11 | PA11 | bidirectional | General-purpose I/O with analog-capable function, default function SDA (I2C data, not applicable to lots whose 5th-from-last lot digit is 0) with alternates C2P1 and remappable SCK_2 and RX1_1. |
| 12 | PA10 | bidirectional | General-purpose I/O, default function SCL (I2C clock, not applicable to lots whose 5th-from-last lot digit is 0) with alternates TX1_1, MOSI_2 and RX4_3. |
| 13 | PC3 | bidirectional | General-purpose I/O with analog-capable function (A13), default function C1N0/C2N1/C3N1 with alternates RTS2_3 and T1C4_3; on this TSSOP20 package it can also be used as the RST function. |
| 14 | PA0 | bidirectional | General-purpose I/O with analog input capability (A0), default function T2C1, with alternates CTS2, C1P1 and remappable T2C1_2. |
| 15 | PA1 | bidirectional | General-purpose I/O with analog input capability (A1), default function RTS2, with alternates T2C2, C1O, O1N2 and O2N2 and remappable CTS2_1 and T2C2_2. |
| 16 | PA2 | bidirectional | General-purpose I/O with analog input capability (A2), default function TX2, with alternates T2C3, O2O1, C3N0 and remappable RTS2_1, T2ET_5, T2C3_1 and T2ET_6. |
| 17 | PA3 | bidirectional | General-purpose I/O with analog input capability (A3, not applicable to lots whose 5th-from-last lot digit is 0), default function RX2, with alternates T2C4, O1O0 and remappable T3C1_3, T2C4_1 and CTS3_2. |
| 18 | PC19 | bidirectional | General-purpose I/O with analog-capable function, default function DCK (SWCLK serial debug clock) with alternates PIOC_IO1 and C1P0, plus remappable T2C1_5, T3C1_2, SCL_3, SDA_5, RX3_1, RX4_4 and T2C1_6. |
| 19 | PA4 | bidirectional | General-purpose I/O with analog input capability (A4), default function CS (SPI NSS), with alternates CK2 and O2O0 and remappable RTS3_2 and T3C2_3. |
| 20 | PA5 | bidirectional | General-purpose I/O with analog input capability (A5), default function SCK (SPI clock), with alternates O2N0 and remappable TX4_1 and CTS4_4. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WCH |
| Package | TSSOP-20 |
| Category | Others |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 工作时的环境温度 (operating ambient temperature) | TA | -40 | 85 | ℃ | 工作时的环境温度 | 23 | |
| 存储时的环境温度 (storage temperature) | TS | -40 | 125 | ℃ | 存储时的环境温度 | 23 | |
| VDD 外部主供电引脚电压 | VDD | -0.3 | 6 | V | 外部主供电引脚 VDD 上的电压 | 23 | |
| I/O 引脚电压 | VIN | -0.3 | V | I/O 引脚上的电压; printed max is VDD+0.3 | 23 | ||
| 主供电引脚各 VDD 之间的电压差 | /ΔVDD_x/ | 20 | mV | 主供电引脚各 VDD 之间的电压差 | 23 | ||
| 公共地引脚各 GND 之间的电压差 | /ΔGND_x/ | 20 | mV | 公共地引脚各 GND 之间的电压差 | 23 | ||
| 所有 VDD 主供电引脚合计总电流 | IVDD | 150 | mA | 所有 VDD 主供电引脚的合计总电流 | 23 | ||
| 所有 GND 公共地引脚合计总电流 | IGND | 200 | mA | 所有 GND 公共地引脚的合计总电流 | 23 | ||
| 任意 I/O 引脚 sink 电流 | IIO | 40 | mA | 任意 I/O 引脚上的 sink 电流 | 23 | ||
| 任意 I/O 引脚 source 电流 | IIO | 30 | mA | 任意 I/O 引脚上的 source 电流 | 23 | ||
| 内部系统总线频率或微处理器主频 | FHCLK 或 FSYS | 48 | MHz | 内部系统总线频率或微处理器主频 | 23 | ||
| 工作电源电压 (额定 5V), 未用 USB 和 PD 功能 | VDD | 2 | 5.5 | V | 未用 USB 和 PD 功能 | 23 | |
| 工作电源电压 (额定 5V), 使用 USB 或 PD 功能 | VDD | 3 | 5.3 | V | 使用 USB 或 PD 功能 | 23 | |
| 工作电源电压, 未使用 ADC 功能 | VDD | 2 | 5.5 | V | 未使用 ADC 功能 | 23 | |
| 工作电源电压, 使用 ADC 功能 | VDD | 2.5 | 5.5 | V | 使用 ADC 功能 | 24 | |
| VDD 上升速率 | tVDD | 0.1 | us/V | 24 | |||
| VDD 下降速率 | tVDD | 10 | us/V | 24 | |||
| 复位定时时间 (上电复位) | tRSTTEMPO | 4 | 17 | 24 | ms | 上电复位 | 24 |
| 复位定时时间 (其他复位) | tRSTTEMPO | 6 | 9 | 20 | us | 其他复位 | 24 |
| 内置参考电压 | VREFINT | 1.16 | 1.2 | 1.24 | V | TA = -40℃～85℃ | 24 |
CAD (KiCad official)
- Symbol:
CH32X033F8P6 - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
ch32x033f8p6-etched.step/ch32x033f8p6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ch32x033f8p6.step/ch32x033f8p6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WCH datasheet (41 pp, sha256
147f0d22d0738729, retrieved 2026-10-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# CH32X033F8P6
**WCH** · Others · TSSOP-20
CH32X033F8P6 from WCH, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | PA6 | bidirectional | General-purpose I/O with analog input capability (A6), default function MISO, with alternates T3C1, O1N0 and remappable T1BK_1, CK4_1, RTS4_4 selected through AFIO. |
| 2 | PA7 | bidirectional | General-purpose I/O with analog input capability (A7, not applicable to lots whose 5th-from-last lot digit is 0), default function MOSI, sharing this pin with PB0 which is bonded internally, so both must not be configured as outputs at the same time. |
| 3 | PB1 | bidirectional | General-purpose I/O with analog input capability (A9), default function RX4, with alternates O2N1 and remappable T1C3N_1. |
| 4 | PB7 | bidirectional | General-purpose I/O with analog-capable function, default function T1C2N/O2P2/RTS3, and on this TSSOP20 CH32X033 package it can also be used as the RST function (remap RST(3)). |
| 5 | PC16 | bidirectional | General-purpose I/O with analog-capable function, default function UDM (USB D-), sharing this pin with PC11 which is bonded internally so both must not be configured as outputs at the same time, and requiring an external pull-up resistor when the I2C function is used. |
| 6 | PC17 | bidirectional | General-purpose I/O with analog-capable function, default function UDP (USB D+), sharing this pin with PC10 which is bonded internally so both must not be configured as outputs at the same time; PC17 is the BOOT detection pin and is read high at power-up to enter the system boot area. |
| 7 | GND | power_in | Ground reference pin for all voltages on the device. |
| 8 | PC18 | bidirectional | General-purpose I/O, default function DIO (SWDIO serial debug data) with alternate PIOC_IO0 and other remappable functions. |
| 9 | VDD | power_in | Supply pin powering the I/O pins and internal regulator, rated 2 to 5.5 V (must be at least 2.5 V when ADC or PD is used). |
| 10 | PA9 | bidirectional | General-purpose I/O, default function MISO_ (SPI MISO) with alternates RX4_1, CTS1_2, MOSI_1, MISO_2, T2BK_1 and T2BK_3 selected through AFIO. |
| 11 | PA11 | bidirectional | General-purpose I/O with analog-capable function, default function SDA (I2C data, not applicable to lots whose 5th-from-last lot digit is 0) with alternates C2P1 and remappable SCK_2 and RX1_1. |
| 12 | PA10 | bidirectional | General-purpose I/O, default function SCL (I2C clock, not applicable to lots whose 5th-from-last lot digit is 0) with alternates TX1_1, MOSI_2 and RX4_3. |
| 13 | PC3 | bidirectional | General-purpose I/O with analog-capable function (A13), default function C1N0/C2N1/C3N1 with alternates RTS2_3 and T1C4_3; on this TSSOP20 package it can also be used as the RST function. |
| 14 | PA0 | bidirectional | General-purpose I/O with analog input capability (A0), default function T2C1, with alternates CTS2, C1P1 and remappable T2C1_2. |
| 15 | PA1 | bidirectional | General-purpose I/O with analog input capability (A1), default function RTS2, with alternates T2C2, C1O, O1N2 and O2N2 and remappable CTS2_1 and T2C2_2. |
| 16 | PA2 | bidirectional | General-purpose I/O with analog input capability (A2), default function TX2, with alternates T2C3, O2O1, C3N0 and remappable RTS2_1, T2ET_5, T2C3_1 and T2ET_6. |
| 17 | PA3 | bidirectional | General-purpose I/O with analog input capability (A3, not applicable to lots whose 5th-from-last lot digit is 0), default function RX2, with alternates T2C4, O1O0 and remappable T3C1_3, T2C4_1 and CTS3_2. |
| 18 | PC19 | bidirectional | General-purpose I/O with analog-capable function, default function DCK (SWCLK serial debug clock) with alternates PIOC_IO1 and C1P0, plus remappable T2C1_5, T3C1_2, SCL_3, SDA_5, RX3_1, RX4_4 and T2C1_6. |
| 19 | PA4 | bidirectional | General-purpose I/O with analog input capability (A4), default function CS (SPI NSS), with alternates CK2 and O2O0 and remappable RTS3_2 and T3C2_3. |
| 20 | PA5 | bidirectional | General-purpose I/O with analog input capability (A5), default function SCK (SPI clock), with alternates O2N0 and remappable TX4_1 and CTS4_4. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WCH |
| Package | TSSOP-20 |
| Category | Others |
| Pins | 20 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 工作时的环境温度 (operating ambient temperature) | TA | -40 | | 85 | ℃ | 工作时的环境温度 | 23 |
| 存储时的环境温度 (storage temperature) | TS | -40 | | 125 | ℃ | 存储时的环境温度 | 23 |
| VDD 外部主供电引脚电压 | VDD | -0.3 | | 6 | V | 外部主供电引脚 VDD 上的电压 | 23 |
| I/O 引脚电压 | VIN | -0.3 | | | V | I/O 引脚上的电压; printed max is VDD+0.3 | 23 |
| 主供电引脚各 VDD 之间的电压差 | /ΔVDD_x/ | | | 20 | mV | 主供电引脚各 VDD 之间的电压差 | 23 |
| 公共地引脚各 GND 之间的电压差 | /ΔGND_x/ | | | 20 | mV | 公共地引脚各 GND 之间的电压差 | 23 |
| 所有 VDD 主供电引脚合计总电流 | IVDD | | | 150 | mA | 所有 VDD 主供电引脚的合计总电流 | 23 |
| 所有 GND 公共地引脚合计总电流 | IGND | | | 200 | mA | 所有 GND 公共地引脚的合计总电流 | 23 |
| 任意 I/O 引脚 sink 电流 | IIO | | | 40 | mA | 任意 I/O 引脚上的 sink 电流 | 23 |
| 任意 I/O 引脚 source 电流 | IIO | | | 30 | mA | 任意 I/O 引脚上的 source 电流 | 23 |
| 内部系统总线频率或微处理器主频 | FHCLK 或 FSYS | | | 48 | MHz | 内部系统总线频率或微处理器主频 | 23 |
| 工作电源电压 (额定 5V), 未用 USB 和 PD 功能 | VDD | 2 | | 5.5 | V | 未用 USB 和 PD 功能 | 23 |
| 工作电源电压 (额定 5V), 使用 USB 或 PD 功能 | VDD | 3 | | 5.3 | V | 使用 USB 或 PD 功能 | 23 |
| 工作电源电压, 未使用 ADC 功能 | VDD | 2 | | 5.5 | V | 未使用 ADC 功能 | 23 |
| 工作电源电压, 使用 ADC 功能 | VDD | 2.5 | | 5.5 | V | 使用 ADC 功能 | 24 |
| VDD 上升速率 | tVDD | 0.1 | | | us/V | | 24 |
| VDD 下降速率 | tVDD | 10 | | | us/V | | 24 |
| 复位定时时间 (上电复位) | tRSTTEMPO | 4 | 17 | 24 | ms | 上电复位 | 24 |
| 复位定时时间 (其他复位) | tRSTTEMPO | 6 | 9 | 20 | us | 其他复位 | 24 |
| 内置参考电压 | VREFINT | 1.16 | 1.2 | 1.24 | V | TA = -40℃～85℃ | 24 |
## CAD (KiCad official)
- Symbol: `CH32X033F8P6`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `ch32x033f8p6-etched.step` / `ch32x033f8p6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ch32x033f8p6.step` / `ch32x033f8p6.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [WCH datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8786658251033329664) (41 pp, sha256 `147f0d22d0738729`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/ch32x033f8p6-datasheet.pdf)