STC8H1K16-36I-LQFP32 from STC Micro, in a LQFP-32(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	P1.0/RxD2/ADC0/PWM1P	bidirectional	Standard I/O P1.0. Muxed with UART2 RxD2 input, ADC channel 0 analog input, and PWM1 positive capture/output (PWM1P).
2	P1.1/TxD2/ADC1/PWM1N	bidirectional	Standard I/O P1.1. Muxed with UART2 TxD2 output, ADC channel 1 analog input, and PWM1 negative output (PWM1N).
3	P1.2/ADC2/SS/T2/PWM2P	bidirectional	Standard I/O P1.2. Muxed with ADC channel 2, SPI slave-select SS, Timer2 external clock input T2, and PWM2 positive capture/output.
4	P1.3/ADC3/MOSI/T2CLKO/PWM2N	bidirectional	Standard I/O P1.3. Muxed with ADC channel 3, SPI MOSI, Timer2 clock divider output T2CLKO, and PWM2 negative output.
5	P1.4/ADC4/MISO/SDA/PWM3P	bidirectional	Standard I/O P1.4. Muxed with ADC channel 4, SPI MISO, I2C SDA data line, and PWM3 positive capture/output.
6	P1.5/ADC5/SCLK/SCL/PWM3N	bidirectional	Standard I/O P1.5. Muxed with ADC channel 5, SPI SCLK, I2C SCL clock line, and PWM3 negative output.
7	P1.6/ADC6/RxD_3/PWM4P/MCLKO_2/XTALO	bidirectional	Standard I/O P1.6. Muxed with ADC channel 6, UART1 RxD (alt map 3), PWM4 positive capture/output, master-clock divider output MCLKO_2, and external crystal output XTALO.
8	P1.7/ADC7/TxD_3/PWM4N/PWM5_2/XTALI	bidirectional	Standard I/O P1.7. Muxed with ADC channel 7, UART1 TxD (alt map 3), PWM4 negative output, PWM5 alternate positive capture/output, and external crystal/clock input XTALI.
9	P5.4/nRST/MCLKO/PWM6_2	bidirectional	Dual-function pin: default is standard I/O P5.4 from the factory; can be configured as active-low external reset input nRST via ISP option. Also muxed with master-clock divider output MCLKO and PWM6 alternate positive capture/output.
10	Vcc/AVcc	power_in	Digital and analog supply (tied together). Operating range 1.9 V to 5.5 V. Decouple with a 0.1 uF ceramic in parallel with a 10 uF (or larger) bulk cap close to the pin.
11	ADC_VRef+	power_in	ADC positive external reference voltage input. Range 2.4 V to MCU-Vcc. May be tied directly to Vcc if precision is not required.
12	Gnd/AGnd	power_in	Digital and analog ground (tied together).
13	P3.0/RxD/INT4	bidirectional	Standard I/O P3.0. Muxed with UART1 RxD input and external interrupt INT4. Powers up as weak pull-up / quasi-bidirectional (unlike other GPIOs which power up high-Z).
14	P3.1/TxD	bidirectional	Standard I/O P3.1. Muxed with UART1 TxD output. Powers up as weak pull-up / quasi-bidirectional.
15	P3.2/INT0/SCLK_4/SCL_4/PWMETI/PWMETI2	bidirectional	Standard I/O P3.2. Muxed with external interrupt INT0, SPI SCLK (alt map 4), I2C SCL (alt map 4), and PWMA/PWMB external trigger inputs (PWMETI, PWMETI2).
16	P3.3/INT1/MISO_4/SDA_4/PWM4N_4/PWM7_2	bidirectional	Standard I/O P3.3. Muxed with external interrupt INT1, SPI MISO (alt map 4), I2C SDA (alt map 4), PWM4 negative output (alt map 4), and PWM7 alternate capture/output.
17	P3.4/T0/T1CLKO/MOSI_4/PWM4P_4/PWM8_2/CMPO	bidirectional	Standard I/O P3.4. Muxed with Timer0 external clock input T0, Timer1 clock divider output T1CLKO, SPI MOSI (alt map 4), PWM4 positive (alt map 4), PWM8 alternate capture/output, and analog comparator output CMPO.
18	P3.5/T1/T0CLKO/SS_4/PWMFLT/PWMFLT2	bidirectional	Standard I/O P3.5. Muxed with Timer1 external clock input T1, Timer0 clock divider output T0CLKO, SPI SS (alt map 4), and PWMA/PWMB external fault inputs (PWMFLT, PWMFLT2).
19	P3.6/INT2/RxD_2/CMP-	bidirectional	Standard I/O P3.6. Muxed with external interrupt INT2, UART1 RxD (alt map 2), and analog comparator negative input CMP-.
20	P3.7/INT3/TxD_2/CMP+	bidirectional	Standard I/O P3.7. Muxed with external interrupt INT3, UART1 TxD (alt map 2), and analog comparator positive input CMP+.
21	P2.0/PWM1P_2/PWM5	bidirectional	Standard I/O P2.0. Muxed with PWM1 positive (alt map 2) and PWM5 capture/output.
22	P2.1/PWM1N_2/PWM6	bidirectional	Standard I/O P2.1. Muxed with PWM1 negative (alt map 2) and PWM6 capture/output.
23	P2.2/PWM2P_2/PWM7/SS_2	bidirectional	Standard I/O P2.2. Muxed with PWM2 positive (alt map 2), PWM7 capture/output, and SPI SS (alt map 2).
24	P2.3/PWM2N_2/PWM8/MOSI_2	bidirectional	Standard I/O P2.3. Muxed with PWM2 negative (alt map 2), PWM8 capture/output, and SPI MOSI (alt map 2).
25	P2.4/PWM3P_2/MISO_2/SDA_2	bidirectional	Standard I/O P2.4. Muxed with PWM3 positive (alt map 2), SPI MISO (alt map 2), and I2C SDA (alt map 2).
26	P2.5/PWM3N_2/SCLK_2/SCL_2	bidirectional	Standard I/O P2.5. Muxed with PWM3 negative (alt map 2), SPI SCLK (alt map 2), and I2C SCL (alt map 2).
27	P2.6/PWM4P_2	bidirectional	Standard I/O P2.6. Muxed with PWM4 positive capture/output (alt map 2).
28	P2.7/PWM4N_2	bidirectional	Standard I/O P2.7. Muxed with PWM4 negative output (alt map 2).
29	P0.0/ADC8/T3/PWM5_3	bidirectional	Standard I/O P0.0. Muxed with ADC channel 8, Timer3 external clock input T3, and PWM5 capture/output (alt map 3).
30	P0.1/ADC9/T3CLKO/PWM6_3	bidirectional	Standard I/O P0.1. Muxed with ADC channel 9, Timer3 clock divider output T3CLKO, and PWM6 capture/output (alt map 3).
31	P0.2/ADC10/T4/PWM7_3	bidirectional	Standard I/O P0.2. Muxed with ADC channel 10, Timer4 external clock input T4, and PWM7 capture/output (alt map 3).
32	P0.3/ADC11/T4CLKO/PWM8_3	bidirectional	Standard I/O P0.3. Muxed with ADC channel 11, Timer4 clock divider output T4CLKO, and PWM8 capture/output (alt map 3).

Key specifications

Parameter	Value
Manufacturer	STC Micro
Package	LQFP-32(7x7)
Category	MCU
Pins	32

Ordering variants

Same part, different packaging or reel option.

STC8H1K16-36I-LQFP32
STC8H1K16-36I-QFN32
STC8H1K16-36I-TSSOP28
STC8H1K16-36I-SOP28
STC8H1K16-36I-TSSOP20

CAD (KiCad official)

Symbol: STC8H1K16-36I-LQFP32
Footprint: Package_QFP:LQFP-32_7x7mm_P0.8mm
3D model: LQFP-32(7x7) (KiCad packages3D, STEP)

Provenance

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

Datasheet: STC Micro datasheet (2180 pp, sha256 046aea020e4685f3, retrieved 2026-08-17, 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF