STC15W204S-35I-SOP16

@@ -0,0 +1,60 @@+# STC15W204S-35I-SOP16++**STC Micro** · Microcontrollers (MCU/MPU/SOC) · SOIC-16++STC15W204S-35I-SOP16 from STC Micro, in a SOIC-16. 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/T0/CMPO | bidirectional | Standard I/O P1[2]. Alt-functions: T0 (Timer/Counter 0 external input) and CMPO (on-chip comparator result output). |+| 2 | P1.3 | bidirectional | Standard I/O P1[3]. No alternate function is exposed on this variant. |+| 3 | P1.4/T0CLKO | bidirectional | Standard I/O P1[4]. Alt-function: T0CLKO - Timer/Counter 0 clock output (enable via INT_CLKO[0]); can also output a divided version of the T0 external clock input. |+| 4 | P1.5 | bidirectional | Standard I/O P1[5]. No alternate function is exposed on this variant. |+| 5 | P5.4/RST/MCLKO/CMP- | bidirectional | Standard I/O P5[4]. Alt-functions: RST (active-HIGH reset input), MCLKO (main-clock output at MCLK/1, /2 or /4 - internal R/C clock only on this series), CMP- (comparator negative input; requires high-impedance input mode when used as comparator). |+| 6 | VCC | power_in | Positive supply, 2.5 V to 5.5 V. |+| 7 | P5.5/CMP+ | bidirectional | Standard I/O P5[5]. Alt-function: CMP+ - comparator positive input (requires high-impedance input mode when used as comparator). |+| 8 | GND | power_in | Ground / supply negative reference. |+| 9 | P3.0/RxD/INT4/T2CLKO | bidirectional | Standard I/O P3[0]. Alt-functions: RxD (UART receive), INT4 (falling-edge external interrupt 4, supports power-down wake-up), T2CLKO (Timer 2 clock output, enabled via INT_CLKO[2]). |+| 10 | P3.1/TxD/T2 | bidirectional | Standard I/O P3[1]. Alt-functions: TxD (UART transmit), T2 (Timer/Counter 2 external input). |+| 11 | P3.2/INT0 | bidirectional | Standard I/O P3[2]. Alt-function: INT0 - external interrupt 0; edge sensitivity selected by IT0 (TCON.0): rising+falling when 0, falling-only when 1. Supports power-down wake-up. |+| 12 | P3.3/INT1 | bidirectional | Standard I/O P3[3]. Alt-function: INT1 - external interrupt 1; edge sensitivity selected by IT1 (TCON.2): rising+falling when 0, falling-only when 1. Supports power-down wake-up. |+| 13 | P3.6/INT2/RxD_2 | bidirectional | Standard I/O P3[6]. Alt-functions: INT2 (falling-edge external interrupt 2, supports power-down wake-up), RxD_2 (alternate UART receive - the UART can be time-multiplexed between P3.0/P3.1 and P3.6/P3.7 pin groups). |+| 14 | P3.7/INT3/TxD_2 | bidirectional | Standard I/O P3[7]. Alt-functions: INT3 (falling-edge external interrupt 3, supports power-down wake-up), TxD_2 (alternate UART transmit - see P3.6 note). |+| 15 | P1.0/RSTOUT_LOW | bidirectional | Standard I/O P1[0]. Alt-function: RSTOUT_LOW - outputs low after power-on and during reset; the user may drive it high or low in software. If used as an input, drive high first before reading. |+| 16 | P1.1 | bidirectional | Standard I/O P1[1]. No alternate function is exposed on this variant. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STC Micro |+| Package | SOIC-16 |+| Category | MCU |+| Pins | 16 |++## Ordering variants++Same part, different packaging or reel option.++- `STC15W204S-35I-SOP16`+- `STC15W204S-35I-DIP16`+- `STC15W204S-35I-SOP8`++## CAD (KiCad official)++- Symbol: `STC15W204S-35I-SOP16`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STC Micro datasheet](docs/stc15w204s-35i-sop16-datasheet.pdf) (1219 pp, sha256 `cc8c299c891646e0`, 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](docs/stc15w204s-35i-sop16-datasheet.pdf)

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