# AT24C512C-SSHM-T

**Microchip** · EEPROM · SOP-8

AT24C512C-SSHM-T from Microchip, in a SOP-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 | A0 | input | Device address input bit 0. Hardwire to VCC or GND to set one of up to 8 unique bus addresses; if left floating it is internally pulled to GND, but a defined connection (10 kOhm or less pull) is recommended due to capacitive coupling. |
| 2 | A1 | input | Device address input bit 1. Hardwire to VCC or GND to select the device address; internally pulled to GND if floating. Recommended external tie (<=10 kOhm) to a known state. |
| 3 | A2 | input | Device address input bit 2. Combined with A1/A0 to give up to 8 devices per I2C bus. Internally pulled to GND if floating; recommended external tie (<=10 kOhm). |
| 4 | GND | power_in | Device ground / 0 V reference. |
| 5 | SDA | bidirectional | I2C serial data. Bidirectional, open-drain output; requires an external pull-up resistor (typ 1.3 kOhm at 2.5-5V, 10 kOhm at 1.7V). Wire-ORable with other open-drain devices on the bus. |
| 6 | SCL | input | I2C serial clock input. Positive edges clock data into the device; negative edges clock data out. Supports up to 400 kHz at 1.7V and 1 MHz at 2.5-5.5V. |
| 7 | WP | input | Write Protect. Tie to GND for normal read/write operation; tie to VCC to inhibit all writes to the array (full-array protection). Internally pulled to GND if floating; recommended external tie (<=10 kOhm) to a known state. |
| 8 | VCC | power_in | Positive supply. 1.7-3.6V (VCC1) or 2.5-5.5V (VCC2) depending on device variant. Absolute max 6.25V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip |
| Package | SOP-8 |
| Category | Memory |
| Pins | 8 |

## Ordering variants

- `AT24C512C-SSHM-T`
- `AT24C512C-SSHM-TXHM-T`
- `AT24C512C-SSHM-TXHM`
- `AT24C512C-SSHM-TMAHM-T`
- `AT24C512C-SSHM-TMAHM`
- `AT24C512C-SSHM-TCUHM-T`
- `AT24C512C-SSHM-TCUHM`

## CAD (KiCad official)

- Symbol: `AT24C512C-SSHM-T`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `at24c512c-sshm-t-etched.step` / `at24c512c-sshm-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `at24c512c-sshm-t.step` / `at24c512c-sshm-t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip datasheet](docs/at24c512c-sshm-t-datasheet.pdf) (21 pp, sha256 `9a744ba063c1f9ee`, retrieved 2026-08-17, tier: manufacturer)
- **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/at24c512c-sshm-t-datasheet.pdf)