# AT24C08D-SSHM-T

**Microchip Tech** · EEPROM · SOIC-8

AT24C08D-SSHM-T from Microchip Tech, 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 | NC | unconnected | Not bonded to a die pad; this pin can be connected to GND or left floating. |
| 2 | NC | unconnected | Not bonded to a die pad; this pin can be connected to GND or left floating. |
| 3 | A2 | input | Hardware device address input that selects the fifth bit of the I2C seven-bit slave address; it can connect directly to VCC or GND, and if left undriven it is internally pulled down to GND. |
| 4 | GND | power_in | Ground reference for the power supply, which should be connected to the system ground. |
| 5 | SDA | bidirectional | Open-drain serial data pin that must be pulled high through an external pull-up resistor not exceeding 10K, and may be wire-ORed with other open-drain devices on the bus. |
| 6 | SCL | input | Serial clock input that must be forced high when the bus is idle or pulled high externally; SDA data is latched on its rising edge and output data is clocked out on its falling edge. |
| 7 | WP | input | Write protect input: connecting it to GND permits normal write operations, while connecting it to VCC inhibits all writes to the memory, and if left undriven it is internally pulled down to GND. |
| 8 | VCC | power_in | Device power supply pin (1.7 V to 3.6 V per the datasheet); operation at invalid VCC voltages may produce spurious results and should not be attempted. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Memory |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `AT24C08D-SSHM-T`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `at24c08d-sshm-t-etched.step` / `at24c08d-sshm-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `at24c08d-sshm-t.step` / `at24c08d-sshm-t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588879912987582464) (28 pp, sha256 `06477d468f8e193a`, retrieved 2026-10-09, 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/at24c08d-sshm-t-datasheet.pdf)