STC8H1K17-36I-TSSOP20

@@ -0,0 +1,62 @@+# STC8H1K17-36I-TSSOP20++**STC Micro** · Microcontrollers (MCU/MPU/SOC) · TSSOP-20++STC8H1K17-36I-TSSOP20 from STC Micro, in a TSSOP-20. 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 | P1.2/T2/SS/PWM2P | bidirectional | General-purpose I/O P1.2. Muxed functions: Timer 2 external clock/gate input (T2), SPI slave-select (SS), advanced PWM channel 2 positive output (PWM2P). |+| 2 | P1.3/T2CLKO/MOSI/PWM2N | bidirectional | General-purpose I/O P1.3. Alternate functions: Timer 2 clock output (T2CLKO), SPI master-out/slave-in (MOSI), advanced PWM channel 2 negative output (PWM2N). |+| 3 | P1.4/I2CSDA/MISO/PWM3P | bidirectional | General-purpose I/O P1.4. Alternate functions: I2C data (SDA), SPI master-in/slave-out (MISO), advanced PWM channel 3 positive output (PWM3P). |+| 4 | P1.5/I2CSCL/SCLK/PWM3N | bidirectional | General-purpose I/O P1.5. Alternate functions: I2C clock (SCL), SPI clock (SCLK), advanced PWM channel 3 negative output (PWM3N). |+| 5 | P1.6/XTALO/MCLKO_2/RxD_3/PWM4P | bidirectional | General-purpose I/O P1.6. Alternate functions: external crystal oscillator output (XTALO), master-clock output alt-2 (MCLKO_2), UART1 RxD alternate-3, advanced PWM channel 4 positive output (PWM4P). |+| 6 | P1.7/XTALI/TxD_3/PWM5_2/PWM4N | bidirectional | General-purpose I/O P1.7. Alternate functions: external crystal oscillator input (XTALI), UART1 TxD alternate-3, PWM channel 5 alt-2, advanced PWM channel 4 negative output (PWM4N). |+| 7 | P5.4/MCLKO/PWM6_2/nRST | bidirectional | GPIO P5.4 by factory default; can be configured via ISP option as the active-low external reset input (nRST). Alternate functions: master-clock output (MCLKO), PWM channel 6 alt-2. Internal 4 kΩ pull-up is always enabled when configured as nRST; when used as I/O the pull-up stays on for ~6.5 ms after power-up before automatically releasing. |+| 8 | VCC/AVCC | power_in | Digital and analog supply input, 1.9 V to 5.5 V. Decouple with a ≥10 µF bulk capacitor plus a 0.1 µF ceramic between VCC and GND placed close to the pin. |+| 9 | ADC_VREF+ | power_in | External ADC positive reference input. Must be driven by an external reference between 2.4 V and VCC when the ADC is used; if left floating it will exhibit leakage current. |+| 10 | GND/AGND | power_in | Common digital and analog ground return. |+| 11 | P3.0/ADC8/RxD/INT4 | bidirectional | General-purpose I/O P3.0. Powers up as quasi-bidirectional with weak pull-up (default UART download RxD pin). Alternate functions: ADC channel 8, UART1 receive (RxD), external interrupt INT4 (falling-edge only). |+| 12 | P3.1/ADC9/TxD | bidirectional | General-purpose I/O P3.1. Powers up as quasi-bidirectional with weak pull-up (default UART download TxD pin). Alternate functions: ADC channel 9, UART1 transmit (TxD). |+| 13 | P3.2/ADC10/INT0/SCLK_4/I2CSCL_4/PWMETI/PWMETI2 | bidirectional | General-purpose I/O P3.2. Alternate functions: ADC channel 10, external interrupt INT0 (rising/falling edge), SPI clock alt-4, I2C clock alt-4, PWMA/PWMB external trigger inputs (PWMETI, PWMETI2). |+| 14 | P3.3/ADC11/INT1/MISO_4/I2CSDA_4/PWM4N_2/PWM7_2 | bidirectional | General-purpose I/O P3.3. Alternate functions: ADC channel 11, external interrupt INT1 (rising/falling edge), SPI MISO alt-4, I2C SDA alt-4, PWM4N alt-2, PWM7 alt-2. |+| 15 | P3.4/ADC12/T0/T1CLKO/MOSI_4/PWM4P_2/PWM8_2/CMPO | bidirectional | General-purpose I/O P3.4. Alternate functions: ADC channel 12, Timer 0 external input (T0), Timer 1 clock output (T1CLKO), SPI MOSI alt-4, PWM4P alt-2, PWM8 alt-2, analog comparator output (CMPO). |+| 16 | P3.5/ADC13/T1/T0CLKO/SS_4/PWMFLT/PWMFLT2 | bidirectional | General-purpose I/O P3.5. Alternate functions: ADC channel 13, Timer 1 external input (T1), Timer 0 clock output (T0CLKO), SPI slave-select alt-4, PWMA/PWMB fault inputs (PWMFLT, PWMFLT2). |+| 17 | P3.6/ADC14/INT2/RxD_2/CMP- | bidirectional | General-purpose I/O P3.6. Alternate functions: ADC channel 14, external interrupt INT2 (falling edge only), UART1 receive alt-2 (RxD_2), analog comparator inverting input (CMP-). |+| 18 | P3.7/INT3/TxD_2/CMP+ | bidirectional | General-purpose I/O P3.7. Alternate functions: external interrupt INT3 (falling edge only), UART1 transmit alt-2 (TxD_2), analog comparator non-inverting input (CMP+). |+| 19 | P1.0/ADC0/RxD2/PWM1P | bidirectional | General-purpose I/O P1.0. Alternate functions: ADC channel 0, UART2 receive (RxD2), advanced PWM channel 1 positive output (PWM1P). |+| 20 | P1.1/ADC1/TxD2/PWM1N | bidirectional | General-purpose I/O P1.1. Alternate functions: ADC channel 1, UART2 transmit (TxD2), advanced PWM channel 1 negative output (PWM1N). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STC Micro |+| Package | TSSOP-20 |+| Category | MCU |+| Pins | 20 |++## Ordering variants++- `STC8H1K17-36I-TSSOP20`+- `STC8H1K17-36I-TSSOP20STC8H1K17-36I-SOP20`+- `STC8H1K17-36I-TSSOP20STC8H1K17-36I-QFN20`+- `STC8H1K17-36I-TSSOP20STC8H1K17-36I-SOP16`++## CAD (KiCad official)++- Symbol: `STC8H1K17-36I-TSSOP20`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STC Micro datasheet](docs/stc8h1k17-36i-tssop20-datasheet.pdf) (2180 pp, sha256 `046aea020e4685f3`, retrieved 2026-08-17, tier: lcsc)+- **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](docs/stc8h1k17-36i-tssop20-datasheet.pdf)

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