STC15F2K60S2-28I-LQFP44 from STC Micro, in a LQFP-44(10x10). 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	P0.5/AD5	bidirectional	Port 0 bit 5, quasi-bidirectional I/O (weak pull-up after reset). Multiplexed as multiplexed address/data bus bit AD5 when external memory bus is used.
2	P0.6/AD6	bidirectional	Port 0 bit 6, quasi-bidirectional I/O. Multiplexed address/data bus bit AD6.
3	P0.7/AD7	bidirectional	Port 0 bit 7, quasi-bidirectional I/O. Multiplexed address/data bus bit AD7.
4	P1.0/ADC0/CCP1/RxD2	bidirectional	Port 1 bit 0. Alternate functions: ADC channel 0 input; CCP/PCA channel 1 capture/compare/PWM I/O; UART2 receive.
5	P1.1/ADC1/CCP0/TxD2	bidirectional	Port 1 bit 1. Alternate functions: ADC channel 1 input; CCP/PCA channel 0; UART2 transmit.
6	P4.7/TxD2_2	bidirectional	Port 4 bit 7, quasi-bidirectional I/O. Alternate function: UART2 alternate transmit output (TxD2_2).
7	P1.2/ADC2/SS/ECI	bidirectional	Port 1 bit 2. Alternate: ADC ch2, SPI slave-select (SS), PCA external clock input (ECI).
8	P1.3/ADC3/MOSI	bidirectional	Port 1 bit 3. Alternate: ADC ch3; SPI MOSI (master-out/slave-in).
9	P1.4/ADC4/MISO	bidirectional	Port 1 bit 4. Alternate: ADC ch4; SPI MISO.
10	P1.5/ADC5/SCLK	bidirectional	Port 1 bit 5. Alternate: ADC ch5; SPI SCLK.
11	P1.6/ADC6/RxD_3/XTAL2	bidirectional	Port 1 bit 6. Alternate: ADC ch6; UART1 alternate receive (RxD_3); crystal oscillator output XTAL2 (leave floating when using external clock).
12	P1.7/ADC7/TxD_3/XTAL1	bidirectional	Port 1 bit 7. Alternate: ADC ch7; UART1 alternate transmit (TxD_3); crystal oscillator input XTAL1 (or external clock input).
13	P5.4/RST/MCLKO/SS_3	bidirectional	Port 5 bit 4. Alternate: active-high hardware reset input RST (when enabled by config); master clock output MCLKO (MCLK/1, /2 or /4); SPI alternate slave-select SS_3.
14	Vcc	power_in	Positive supply. STC15F2K60S2 accepts 5.5 V to 3.8 V; the -L variant (STC15L2K60S2) covers 3.6 V to 2.4 V.
15	P5.5	bidirectional	Port 5 bit 5, general-purpose quasi-bidirectional I/O.
16	Gnd	power_in	Ground (0 V) reference for the supply.
17	P4.0/MOSI_3	bidirectional	Port 4 bit 0. Alternate: SPI alternate MOSI (MOSI_3).
18	P3.0/RxD/INT4/T2CLKO	bidirectional	Port 3 bit 0. Alternate: UART1 receive (RxD); external interrupt 4 (falling-edge only, supports power-down wake-up); Timer/Counter 2 clock output.
19	P3.1/TxD/T2	bidirectional	Port 3 bit 1. Alternate: UART1 transmit (TxD); Timer/Counter 2 external input.
20	P3.2/INT0	bidirectional	Port 3 bit 2. Alternate: external interrupt 0 (rising and/or falling edge per IT0; supports power-down wake-up).
21	P3.3/INT1	bidirectional	Port 3 bit 3. Alternate: external interrupt 1 (rising and/or falling edge per IT1; supports power-down wake-up).
22	P3.4/T0/T1CLKO/ECI_2	bidirectional	Port 3 bit 4. Alternate: Timer/Counter 0 external input; Timer 1 programmable clock output (T1CLKO); PCA external clock input alternate (ECI_2).
23	P3.5/T1/T0CLKO/CCP0_2	bidirectional	Port 3 bit 5. Alternate: Timer/Counter 1 external input; Timer 0 clock output (T0CLKO); CCP/PCA channel 0 alternate (CCP0_2).
24	P3.6/INT2/RxD_2/CCP1_2	bidirectional	Port 3 bit 6. Alternate: external interrupt 2 (falling-edge only, wake-up capable); UART1 alternate receive (RxD_2); CCP/PCA channel 1 alternate.
25	P3.7/INT3/TxD_2/CCP2/CCP2_2	bidirectional	Port 3 bit 7. Alternate: external interrupt 3 (falling-edge only, wake-up capable); UART1 alternate transmit (TxD_2); CCP/PCA channel 2 (primary and alternate mapping).
26	P4.1/MISO_3	bidirectional	Port 4 bit 1. Alternate: SPI alternate MISO (MISO_3).
27	P4.2/WR	bidirectional	Port 4 bit 2. Alternate: external data-memory write strobe (/WR) for MOVX bus access.
28	P4.3/SCLK_3	bidirectional	Port 4 bit 3. Alternate: SPI alternate clock (SCLK_3).
29	P4.4/RD	bidirectional	Port 4 bit 4. Alternate: external data-memory read strobe (/RD) for MOVX bus access.
30	P2.0/A8/RSTOUT_LOW	bidirectional	Port 2 bit 0. Alternate: address bus bit A8; RSTOUT_LOW - held low during and after reset (software may release).
31	P2.1/A9/SCLK_2	bidirectional	Port 2 bit 1. Alternate: address bus bit A9; SPI alternate clock (SCLK_2).
32	P2.2/A10/MISO_2	bidirectional	Port 2 bit 2. Alternate: address bus bit A10; SPI alternate MISO (MISO_2).
33	P2.3/A11/MOSI_2	bidirectional	Port 2 bit 3. Alternate: address bus bit A11; SPI alternate MOSI (MOSI_2).
34	P2.4/A12/ECI_3/SS_2	bidirectional	Port 2 bit 4. Alternate: address bus bit A12; PCA external clock input (ECI_3); SPI alternate slave-select (SS_2).
35	P2.5/A13/CCP0_3	bidirectional	Port 2 bit 5. Alternate: address bus bit A13; CCP/PCA channel 0 alternate (CCP0_3).
36	P2.6/A14/CCP1_3	bidirectional	Port 2 bit 6. Alternate: address bus bit A14; CCP/PCA channel 1 alternate (CCP1_3).
37	P2.7/A15/CCP2_3	bidirectional	Port 2 bit 7. Alternate: address bus bit A15; CCP/PCA channel 2 alternate (CCP2_3).
38	P4.5/ALE	bidirectional	Port 4 bit 5. Alternate: address-latch-enable strobe (ALE) for external multiplexed address/data bus.
39	P4.6/RxD2_2	bidirectional	Port 4 bit 6. Alternate: UART2 alternate receive (RxD2_2).
40	P0.0/AD0	bidirectional	Port 0 bit 0, quasi-bidirectional I/O. Multiplexed address/data bus bit AD0.
41	P0.1/AD1	bidirectional	Port 0 bit 1, quasi-bidirectional I/O. Multiplexed address/data bus bit AD1.
42	P0.2/AD2	bidirectional	Port 0 bit 2, quasi-bidirectional I/O. Multiplexed address/data bus bit AD2.
43	P0.3/AD3	bidirectional	Port 0 bit 3, quasi-bidirectional I/O. Multiplexed address/data bus bit AD3.
44	P0.4/AD4	bidirectional	Port 0 bit 4, quasi-bidirectional I/O. Multiplexed address/data bus bit AD4.

Key specifications

Parameter	Value
Manufacturer	STC Micro
Package	LQFP-44(10x10)
Category	MCU
Pins	44

Ordering variants

Same part, different packaging or reel option.

STC15F2K60S2-28I-LQFP44
STC15F2K60S2-28I-PLCC44
STC15F2K60S2-28I-PDIP40
STC15F2K60S2-28I-LQFP32
STC15F2K60S2-28I-SOP28
STC15F2K60S2-28I-SKDIP28
STC15F2K60S2-28I-SOP32
STC15F2K60S2-28I-TSSOP20

CAD (KiCad official)

Symbol: STC15F2K60S2-28I-LQFP44
Footprint: Package_QFP:LQFP-44_10x10mm_P0.8mm
3D model: LQFP-44(10x10) (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`stc15f2k60s2-28i-lqfp44.step`	591 KB	You want the bare part, or you mark your own boards.
`stc15f2k60s2-28i-lqfp44-etched.step`	5.9 MB	You want the part with `STC15F2K60S2-28I-LQFP44` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 1451 faces against 695 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: STC Micro datasheet (1163 pp, sha256 e51f2a7c23577f5f, 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