# STC32G8K48-42I-LQFP48

**STC Micro** · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)

STC32G8K48-42I-LQFP48 from STC Micro, in a LQFP-48(7x7). 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 | P5.3 | bidirectional | General-purpose GPIO P5.3 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions TxD4_2, CAN2_TX_2 and LIN_TX_2. |
| 2 | P0.5 | bidirectional | General-purpose GPIO P0.5 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions AD5, ADC13 analog input and T3CLKO. |
| 3 | P0.6 | bidirectional | General-purpose GPIO P0.6 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions AD6, ADC14 analog input, T4 external clock input and PWM external trigger/fault input PWMETI2_2. |
| 4 | P0.7 | bidirectional | General-purpose GPIO P0.7 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions AD7 and T4CLKO timer 4 clock output. |
| 5 | P1.0 | bidirectional | General-purpose GPIO P1.0 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions ADC0, PWM1P and RxD2 (UART2 receive). |
| 6 | P1.1 | bidirectional | General-purpose GPIO P1.1 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions ADC1, PWM1N and TxD2 (UART2 transmit). |
| 7 | P4.7 | bidirectional | General-purpose GPIO P4.7 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions TxD2_2, CAN2_TX_3 and LIN_TX_3. |
| 8 | P1.4 | bidirectional | General-purpose GPIO P1.4 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions ADC4, PWM3P, SPI MISO/S1MISO/S2MISO and I2C SDA. |
| 9 | P1.5 | bidirectional | General-purpose GPIO P1.5 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions ADC5, PWM3N, SPI SCLK/S1SCLK/S2SCLK, I2C SCL and I2S clock I2SCK_2. |
| 10 | P1.6 | bidirectional | General-purpose GPIO P1.6 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions ADC6, RxD_3, PWM4P, MCLKO_2 clock output, XTALO crystal output and I2S master clocks I2SMCK_2/I2SMCK_4. |
| 11 | P1.7 | bidirectional | General-purpose GPIO P1.7 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions ADC7, TxD_3, PWM4N, PWM5_2 and XTALI external crystal/clock input. |
| 12 | P1.3 | bidirectional | General-purpose GPIO P1.3 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions ADC3, SPI MOSI/S1MOSI/S2MOSI, PWM2N, T2CLKO timer 2 clock output and I2S data I2SSD_2. |
| 13 | P1.2 | bidirectional | General-purpose GPIO P1.2 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions PWM2P, SPI SS/S1SS/S2SS and T2 timer 2 external clock input. |
| 14 | P5.4 | bidirectional | P5.4 is a general-purpose I/O (default after power-up); when configured as the reset pin it acts as an active-low reset input, and it also carries ADC2, MCLKO, SPI SS, PWM2P, T2 and I2S functions. |
| 15 | Vcc/AVcc | power_in | Main supply pin, also the ADC supply (AVcc); the datasheet gives an operating voltage of 1.9 V to 5.5 V for the STC32G8K48 part. |
| 16 | ADC_VRef+ | input | ADC external reference voltage input which must be connected to an external reference between 2.4 V and MCU-VCC, because leaving it floating causes leakage current. |
| 17 | Gnd/AGnd | power_in | Ground pin for the MCU, shared with the ADC analog ground (AGnd). |
| 18 | P4.0 | bidirectional | General-purpose GPIO P4.0 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions SPI MOSI_3, S1MOSI_3, S2MOSI_3 and I2S data I2SSD_4. |
| 19 | P3.0 | bidirectional | General-purpose GPIO P3.0 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions RxD (UART1 receive) and external interrupt INT4; P3.0 and P3.1 are weakly pulled up after power-up. |
| 20 | P3.1 | bidirectional | General-purpose GPIO P3.1 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate function TxD (UART1 transmit); P3.0 and P3.1 are in weak-pull-up/quasi-bidirectional mode after power-up. |
| 21 | P3.2 | bidirectional | General-purpose GPIO P3.2 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions INT0, SPI SCLK_4, I2C SCL_4, PWMETI, PWMETI2 and I2S clock I2SCK; it is sampled at power-up for the USB download mode decision. |
| 22 | P3.3 | bidirectional | General-purpose GPIO P3.3 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions INT1, SPI MISO_4, I2C SDA_4, PWM4N_4 and PWM7_2. |
| 23 | P3.4 | bidirectional | General-purpose GPIO P3.4 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions T0 external clock input, T1CLKO, SPI MOSI_4, PWM4P_4, PWM8_2, comparator output CMPO and I2S data I2SSD. |
| 24 | P5.0 | bidirectional | General-purpose GPIO P5.0 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions RxD3_2 (UART3 receive), CMP+_2 comparator positive input and CAN_RX_2. |
| 25 | P5.1 | bidirectional | General-purpose GPIO P5.1 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions TxD3_2 (UART3 transmit), CMP+_3 comparator positive input and CAN_TX_2. |
| 26 | P3.5 | bidirectional | General-purpose GPIO P3.5 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions T1 external clock input, T0CLKO, SPI SS_4, PWMFLT fault input and I2S word select I2SLRCK. |
| 27 | P3.6 | bidirectional | General-purpose GPIO P3.6 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions external interrupt INT2, RxD_2 (UART1 alternate receive) and comparator negative input CMP-. |
| 28 | P3.7 | bidirectional | General-purpose GPIO P3.7 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions external interrupt INT3, TxD_2 and comparator positive input CMP+ (from pinout map; description table page not in the provided text). |
| 29 | P4.1 | bidirectional | General-purpose GPIO P4.1 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions MISO_3/S1MISO_3/S2MISO_3, CMPO_2 and PWMETI_2 (from pinout map). |
| 30 | P4.2 | bidirectional | General-purpose GPIO P4.2 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions WR (LCD interface write) and CAN_RX_3 (from pinout map). |
| 31 | P4.3 | bidirectional | General-purpose GPIO P4.3 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions RxD_4, SCLK_3/S1SCLK_3/S2SCLK_3 and I2SCK_4 (from pinout map). |
| 32 | P4.4 | bidirectional | General-purpose GPIO P4.4 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions RD (LCD interface read) and TxD_4 (from pinout map). |
| 33 | P2.0 | bidirectional | General-purpose GPIO P2.0 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions A8 (address bus), PWM1P_2 and PWM5 (from pinout map). |
| 34 | P2.1 | bidirectional | General-purpose GPIO P2.1 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions A9 (address bus), PWM1N_2 and PWM6 (from pinout map). |
| 35 | P2.2 | bidirectional | General-purpose GPIO P2.2 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions A10 (address bus), PWM2P_2, PWM7, SPI SS_2/S1SS_2/S2SS_2 and I2SWS_3 (from pinout map). |
| 36 | P2.3 | bidirectional | General-purpose GPIO P2.3 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions A11 (address bus), PWM2N_2, PWM8, SPI MOSI_2/S1MOSI_2/S2MOSI_2 and I2SSD_3 (from pinout map). |
| 37 | P2.4 | bidirectional | General-purpose GPIO P2.4 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions A12 (address bus), PWM3P_2, I2C SDA_2 and SPI MISO_2/S1MISO_2/S2MISO_2 (from pinout map). |
| 38 | P2.5 | bidirectional | General-purpose GPIO P2.5 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions A13 (address bus), PWM3N_2, I2C SCL_2, SPI SCLK_2/S1SCLK_2/S2SCLK_2 and I2SCK_3 (from pinout map). |
| 39 | P2.6 | bidirectional | General-purpose GPIO P2.6 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions A14 (address bus) and PWM4P_2 (from pinout map). |
| 40 | P2.7 | bidirectional | General-purpose GPIO P2.7 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions A15 (address bus) and PWM4N_2 (from pinout map). |
| 41 | P4.5 | bidirectional | General-purpose GPIO P4.5 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions ALE (address latch enable) and CAN_TX_3 (from pinout map). |
| 42 | P4.6 | bidirectional | General-purpose GPIO P4.6 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions LIN_RX_3, CAN2_RX_3 and RxD2_2 (from pinout map). |
| 43 | P0.0 | bidirectional | General-purpose GPIO P0.0 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions AD0 (address/data bus), ADC8, RxD3, PWM5_3, T3_2 and CAN_RX. |
| 44 | P0.1 | bidirectional | General-purpose GPIO P0.1 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions AD1 (address/data bus), ADC9, TxD3, PWM6_3, T3CLKO_2 and CAN_TX. |
| 45 | P0.2 | bidirectional | General-purpose GPIO P0.2 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions AD2 (address/data bus), ADC10, RxD4, PWM7_3, T4_2, CAN2_RX and LIN_RX. |
| 46 | P0.3 | bidirectional | General-purpose GPIO P0.3 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions AD3 (address/data bus), ADC11, TxD4, PWM8_3, T4CLKO_2, CAN2_TX and LIN_TX. |
| 47 | P0.4 | bidirectional | General-purpose GPIO P0.4 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions AD4 (address/data bus), ADC12 analog input and T3 timer 3 external clock input. |
| 48 | P5.2 | bidirectional | General-purpose GPIO P5.2 with selectable quasi-bidirectional, push-pull, open-drain or high-impedance input mode; alternate functions RxD4_2 (UART4 receive), CAN2_RX_2 and LIN_RX_2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STC Micro |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| ICC 普通工作模式电流 | ICC |  | 4 | 20 | mA | VDD=5.0V, 25℃ | 1657 |
| 输入低电平 (打开施密特触发) | VIL1 |  |  | 1.32 | V | VDD=5.0V, 25℃; 打开施密特触发 | 1657 |
| 输入低电平 (关闭施密特触发) | VIL1 |  |  | 1.48 | V | VDD=5.0V, 25℃; 关闭施密特触发 | 1657 |
| 输入高电平（普通 I/O）(打开施密特触发) | VIH1 | 1.6 |  |  | V | VDD=5.0V, 25℃; 打开施密特触发 | 1657 |
| 输入高电平（普通 I/O）(关闭施密特触发) | VIH1 | 1.54 |  |  | V | VDD=5.0V, 25℃; 关闭施密特触发 | 1657 |
| 逻辑 0 输入电流 | IIL |  |  | 50 | uA | VDD=5.0V, 25℃; 端口电压 0V | 1657 |
| 逻辑 1 到 0 的转移电流 | ITL | 100 | 270 | 600 | uA | VDD=5.0V, 25℃; 端口电压 2.0V | 1657 |
| I/O 口上拉电阻 | RPU | 4.1 | 4.2 | 4.4 | KΩ | VDD=5.0V, 25℃ | 1657 |
| 内部 IRC 温漂特性 -20℃~65℃ |  | -0.88 |  | 1.05 | % | 温度 -20℃~65℃; 参考温度 25℃ | 1656 |
| 内部 IRC 温漂特性 -40℃~85℃ |  | -1.38 |  | 1.42 | % | 温度 -40℃~85℃; 参考温度 25℃ | 1656 |
| 内部 IRC 温漂特性 -40℃~125℃ |  | -3 |  | 3 | % | 温度 -40℃~125℃; 参考温度 25℃ | 1656 |
| 存储温度 |  | -55 |  | 155 | ℃ |  | 1656 |
| 工作温度 |  | -40 |  | 85 | ℃ | 使用内部高速 IRC 和外部晶振 | 1656 |
| 工作温度 |  | -40 |  | 125 | ℃ |  | 1656 |
| 工作电压 |  | 1.9 |  | 5.5 | V | 当工作温度低于-40℃时，工作电压不得低于 3.0V | 1656 |
| VDD 对地电压 | VDD | -0.3 |  | 5.5 | V |  | 1656 |
| I/O 口对地电压 |  | -0.3 |  |  | V |  | 1656 |

## CAD (KiCad official)

- Symbol: `STC32G8K48-42I-LQFP48`
- Footprint: `Package_QFP:LQFP-48_7x7mm_P0.5mm`
- 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files: `stc32g8k48-42i-lqfp48-etched.step` / `stc32g8k48-42i-lqfp48-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stc32g8k48-42i-lqfp48.step` / `stc32g8k48-42i-lqfp48.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [STC Micro datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756362888305364992) (1887 pp, sha256 `59bba1d366cc8d33`, retrieved 2026-10-19, 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/stc32g8k48-42i-lqfp48-datasheet.pdf)