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STC32G12K64-35I-LQFP32

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STC Micro Microcontroller Units (MCUs/MPUs/SOCs), LQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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STC32G12K64-35I-LQFP32

STC Micro · Microcontroller Units (MCUs/MPUs/SOCs) · LQFP-32(7x7)

STC32G12K64-35I-LQFP32 from STC Micro, in a LQFP-32(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 P1.0 bidirectional Standard I/O port pin that can also serve as ADC0 input, PWM1P capture/output, or UART2 RxD.
2 P1.1 bidirectional Standard I/O port pin that can also serve as ADC1 input, PWM1N output, or UART2 TxD.
3 P1.4 bidirectional Standard I/O port pin that can also serve as ADC4 input, PWM3P, SPI MISO, or I2C SDA.
4 P1.5 bidirectional Standard I/O port pin that can also serve as ADC5 input, PWM3N, SPI SCLK, or I2C SCL.
5 P1.6 bidirectional Standard I/O port pin that can also serve as ADC6 input, RxD3, PWM4P, master clock output, or external crystal XTALO.
6 P1.7 bidirectional Standard I/O port pin that can also serve as ADC7 input, TxD3, PWM4N, PWM5 I/O, or external crystal/clock input XTALI.
7 P1.3 bidirectional Standard I/O port pin that can also serve as ADC3 input, SPI MOSI, PWM2N output, or Timer2 clock output.
8 UCAP passive USB core power regulator decoupling pin.
9 P5.4/nRST bidirectional Standard I/O port pin by default that can be configured as the active-low reset input nRST, and also serves as ADC2 input and master clock output.
10 Vcc/AVcc power_in Power supply pin for the device (operating voltage 1.9V to 5.5V) and ADC supply.
11 ADC_VRef+ input ADC external reference voltage pin, which must be connected to an external reference between 2.4V and MCU-VCC.
12 Gnd/AGnd power_in Ground pin for digital logic and ADC analog ground.
13 P3.0/RxD/D-/INT4 bidirectional Port pin that after power-on is weak-pull-up quasi-bidirectional and can serve as USB D- data line, UART1 RxD, or external interrupt INT4.
14 P3.1/TxD/D+ bidirectional Port pin that after power-on is weak-pull-up quasi-bidirectional and can serve as USB D+ data line or UART1 TxD.
15 P3.2/INT0 bidirectional Standard I/O port pin that is high level after power-on and is sampled at cold start for USB download mode entry, also serving as external interrupt INT0.
16 P3.3/INT1 bidirectional Standard I/O port pin that can also serve as external interrupt INT1, SPI MISO, I2C SDA, or PWM4N output.
17 P3.4/T0 bidirectional Standard I/O port pin that can also serve as Timer0 external clock input T0, Timer1 clock output, SPI MOSI, or comparator output CMPO.
18 P3.5/T1 bidirectional Standard I/O port pin that can also serve as Timer1 external clock input T1, Timer0 clock output, SPI SS, or PWM fault input PWMFLT.
19 P3.6/INT2 bidirectional Standard I/O port pin that can also serve as external interrupt INT2, UART1 RxD, or comparator negative input CMP-.
20 P3.7/INT3 bidirectional Standard I/O port pin that can also serve as external interrupt INT3, UART2 TxD, or comparator positive input CMP+.
21 P2.0 bidirectional Standard I/O port pin that can also serve as address bus A8, PWM1P, or PWM5 output.
22 P2.1 bidirectional Standard I/O port pin that can also serve as address bus A9, PWM1N, or PWM6 output.
23 P2.2 bidirectional Standard I/O port pin that can also serve as address bus A10, PWM2P, PWM7 output, or SPI SS.
24 P2.3 bidirectional Standard I/O port pin that can also serve as address bus A11, PWM2N, PWM8 output, or SPI MOSI.
25 P2.4 bidirectional Standard I/O port pin that can also serve as address bus A12, PWM3P, I2C SDA, or SPI MISO.
26 P2.5 bidirectional Standard I/O port pin that can also serve as address bus A13, PWM3N, I2C SCL, or SPI SCLK.
27 P2.6 bidirectional Standard I/O port pin that can also serve as address bus A14 or PWM4P output.
28 P2.7 bidirectional Standard I/O port pin that can also serve as address bus A15 or PWM4N output.
29 P0.0 bidirectional Standard I/O port pin that can also serve as address/data bus AD0, ADC8 input, UART3 RxD, or CAN RX.
30 P0.1 bidirectional Standard I/O port pin that can also serve as address/data bus AD1, ADC9 input, UART3 TxD, or CAN TX.
31 P0.2 bidirectional Standard I/O port pin that can also serve as address/data bus AD2, ADC10 input, UART4 RxD, or LIN RX.
32 P0.3 bidirectional Standard I/O port pin that can also serve as address/data bus AD3, ADC11 input, UART4 TxD, or LIN TX.

Key specifications

Parameter Value
Manufacturer STC Micro
Package LQFP-32(7x7)
Category Single Chip Microcomputer/Microcontroller
Pins 32

CAD (KiCad official)

  • Symbol: STC32G12K64-35I-LQFP32
  • Footprint: Package_QFP:LQFP-32_7x7mm_P0.8mm
  • 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)
  • 3D model files: stc32g12k64-35i-lqfp32-etched.step / stc32g12k64-35i-lqfp32-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stc32g12k64-35i-lqfp32.step / stc32g12k64-35i-lqfp32.glb are the bare package body.

Provenance

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

  • Datasheet: STC Micro datasheet (1887 pp, sha256 59bba1d366cc8d33, retrieved 2026-10-27, 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