STC15F104W-35I-SOP8

@@ -0,0 +1,50 @@+# STC15F104W-35I-SOP8++**STC Micro STC15F104W 35I SOP** · Microcontrollers (MCU/MPU/SOC) · SOIC-8++STC15F104W-35I-SOP8 from STC Micro STC15F104W 35I SOP, in a SOIC-8. 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 | P3.4/RST/T0/INT2/MCLKO | bidirectional | Port 3 bit 4. Multi-function: standard I/O (PORT3[4]), active-high external RESET input (when configured via STC-ISP), Timer 0 external clock input (T0), external interrupt 2 (INT2, falling-edge only, supports power-down wakeup), or master clock output (MCLKO) at MCLK/1, MCLK/2, or MCLK/4. Factory default is I/O. |+| 2 | VCC | power_in | Positive supply voltage. Operating range 2.5V to 5.5V (wide-voltage family). Recommend a 47µF bulk plus 0.01µF (or 0.1µF for low-frequency operation) decoupling capacitor between VCC and GND. |+| 3 | P3.5/T0CLKO/INT3 | bidirectional | Port 3 bit 5. Multi-function: standard I/O (PORT3[5]), Timer 0 programmable clock output T0CLKO (divides internal system clock or external T0/P3.4 input, configurable via INT_CLKO[0]), or external interrupt 3 (INT3, falling-edge only, supports power-down wakeup). |+| 4 | GND | power_in | Power supply negative / ground reference (0V). |+| 5 | P3.0/INT4/T2CLKO | bidirectional | Port 3 bit 0. Multi-function: standard I/O (PORT3[0]), external interrupt 4 (INT4, falling-edge only, supports power-down wakeup), or Timer 2 programmable clock output T2CLKO (configurable via INT_CLKO[2]). |+| 6 | P3.1/T2 | bidirectional | Port 3 bit 1. Multi-function: standard I/O (PORT3[1]) or Timer 2 external clock input (T2). |+| 7 | P3.2/INT0 | bidirectional | Port 3 bit 2. Multi-function: standard I/O (PORT3[2]) or external interrupt 0 (INT0). If IT0(TCON.0)=1, INT0 responds only to falling edges; if IT0=0, INT0 responds to both rising and falling edges. Supports power-down wakeup. |+| 8 | P3.3/INT1/RSTOUT_LOW | bidirectional | Port 3 bit 3. Multi-function: standard I/O (PORT3[3]), external interrupt 1 (INT1; IT1(TCON.2)=1 for falling-edge-only, IT1=0 for both edges; supports power-down wakeup), or RSTOUT_LOW output (drives low on power-up and during reset; user-selectable high/low level after reset via software). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STC Micro STC15F104W 35I SOP |+| Package | SOIC-8 |+| Category | MCU |+| Pins | 8 |++## Ordering variants++- `STC15F104W-35I-SOP835I-SOP8`+- `STC15F104W-35I-SOP835I-DIP8`+- `STC15F104W-35I-SOP835I-DFN8`++## CAD (KiCad official)++- Symbol: `STC15F104W-35I-SOP8`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STC Micro STC15F104W 35I SOP datasheet](docs/stc15f104w-35i-sop8-datasheet.pdf) (1473 pp, sha256 `c1fab41b0006cc18`, 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/stc15f104w-35i-sop8-datasheet.pdf)

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