# M41T00SM6F

**STMicroelectronics** · Global Sourcing Parts · SOIC-8

M41T00SM6F from STMicroelectronics, in a SOIC-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 | XI | input | Oscillator input for the external 32.768 kHz crystal (load capacitors are integrated; crystal CL 12.5 pF). |
| 2 | XO | output | Oscillator output for the external 32.768 kHz crystal. |
| 3 | VBAT | power_in | Battery or SuperCap backup supply input, 2.0 to 3.5 V (for rechargeable backup, max may be considered VCC). |
| 4 | VSS | power_in | Ground. |
| 5 | SDA | bidirectional | I2C serial data input/output, requires a pull-up resistor to a positive supply. |
| 6 | SCL | input | I2C serial clock input up to 400 kHz, requires a pull-up resistor to a positive supply. |
| 7 | FT/OUT | output | Open-drain frequency test (512 Hz) / output driver pin requiring a pull-up resistor to VCC (500 to 10k recommended), pull-up voltage max 5.5 V. |
| 8 | VCC | power_in | Supply voltage, 2.7 to 5.5 V; device deselects below VPFD (2.5 to 2.7 V) and switches to battery below VSO. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-8 |
| Category | Global Sourcing Parts |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `M41T00SM6F`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `m41t00sm6f-etched.step` / `m41t00sm6f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `m41t00sm6f.step` / `m41t00sm6f.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/8588879936577294336) (28 pp, sha256 `7c970f5ad7f7da81`, retrieved 2026-10-05, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/m41t00sm6f-datasheet.pdf)