# CN810M

**ShangHai Consonance Elec** · Monitors & Reset Circuits · SOT-23-3

CN810M from ShangHai Consonance Elec, in a SOT-23-3. 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 | GND | power_in | Ground reference for the device; the monitored supply and the RESET output are referenced to this pin. |
| 2 | RESET | output | CMOS active-high reset output for CN810: driven high while VCC is below the reset threshold (4.38V for CN810M) and held high for at least 140 ms after VCC rises above VRES + VHYST. |
| 3 | VCC | power_in | Positive supply input that powers the internal circuit and is also the monitored voltage; minimum operating voltage 1.15V, absolute maximum -0.3V to +6.0V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | SOT-23-3 |
| Category | Power Management ICs |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reset threshold accuracy |  | -2.5 |  | 2.5 | % | precise reset threshold (feature statement) | 1 |
| Reset threshold | VRES | 4.25 | 4.38 | 4.5 | V | CN8__M row | 4 |
| Reset pulse width | TRES | 140 | 240 | 400 | ms |  | 4 |
| Operating current | IVCC |  | 2.8 | 5.5 | uA | VCC=2.0V | 4 |
| Operating current | IVCC |  | 3.2 | 6 | uA | VCC=3.0V | 4 |
| Operating current | IVCC |  | 4 | 7.5 | uA | VCC=5.0V | 4 |
| Minimum supply voltage | VCCMIN | 1.15 |  |  | V |  | 4 |
| Maximum supply voltage | VCCMAX |  |  | 5.5 | V |  | 4 |
| RESET output low voltage (CN810) | VOL |  |  | 0.3 | V | VRES<VCC=3V, ISINK=3.2mA | 4 |
| VCC to RESET delay (CN810) |  |  |  | 20 | us | VCC from VRES+0.1V to VRES-0.1V | 4 |
| Absolute max VCC voltage | VCC | -0.3 |  | 6 | V | relative to GND | 3 |
| Absolute max RESET pin voltage | RESET | -0.3 |  | 6 | V | relative to GND | 3 |
| Absolute max VCC pin current | VCC |  |  | 20 | mA |  | 3 |
| Absolute max RESET pin current | RESET |  |  | 20 | mA |  | 3 |
| Thermal resistance |  |  |  | 300 | °C/W |  | 3 |
| Operating ambient temperature | TA | -40 |  | 85 | °C |  | 3 |
| Storage temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| Maximum junction temperature | TJ |  |  | 150 | °C |  | 3 |
| Soldering temperature |  |  |  | 300 | °C | 10 s | 3 |
| ESD voltage HBM |  |  |  | 4 | kV | HBM | 3 |

## CAD (KiCad official)

- Symbol: `CN810M`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `cn810m-etched.step` / `cn810m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn810m.step` / `cn810m.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn810m-datasheet.pdf) (7 pp, sha256 `bbeb80fd1a0c3663`, retrieved 2026-10-27, 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:** 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/cn810m-datasheet.pdf)