# STM802SM6F

**STMicroelectronics** · Supervisor And Reset ICs · SO-8

STM802SM6F from STMicroelectronics, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VOUT | power_out | Supply output for external LPSRAM: connected to VCC through a P-channel switch when VCC is above VSO, and switched to VBAT when VCC falls below VSO; connect to VCC if no battery is used. |
| 2 | VCC | power_in | Supply voltage input; without a backup battery, RST is guaranteed valid down to VCC = 1 V. |
| 3 | VSS | power_in | Ground reference for the device. |
| 4 | PFI | input | Power-fail input: PFO goes low when PFI is less than VPFI (or VCC falls below VSW = 2.4 V), and PFI is disabled in battery backup; connect to ground if unused. |
| 5 | PFO | output | Push-pull power-fail output that goes low when PFI is less than VPFI or VCC falls below VSW; leave open if unused. |
| 6 | WDI | input | Watchdog input: if WDI stays high or low for 1.6 s (typ) the watchdog triggers a reset, and the watchdog cannot be disabled by letting WDI float. |
| 7 | RST | output | Active-low reset output that pulses low for trec when triggered and stays low while VCC is below the reset threshold or MR is low. |
| 8 | VBAT | power_in | Backup battery input that connects to VOUT when VCC falls below VSO; VBAT may exceed VCC, and it should be connected to VCC if no battery is used. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `STM802SM6F`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `stm802sm6f-etched.step` / `stm802sm6f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm802sm6f.step` / `stm802sm6f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588952679124488192) (42 pp, sha256 `7b0e1b14da4b9b31`, retrieved 2026-10-11, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/stm802sm6f-datasheet.pdf)