AT24C64D-SSHM-T

@@ -0,0 +1,47 @@+# AT24C64D-SSHM-T++**Microchip Tech** · EEPROM · SOIC-8++AT24C64D-SSHM-T from Microchip Tech, in a SOIC-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. Hardwired to VCC or GND to set the LSB of the 3-bit device-select field in the I²C slave address, allowing up to eight AT24C64D devices on a single 2-wire bus. Internal pull-down to GND when left floating; Atmel recommends tying to a known state with ≤10 kΩ pull-up if used with VCC. |+| 2 | A1 | input | Device address input bit 1. Hardwired to VCC or GND to set bit 1 of the 3-bit device-select field. Internal pull-down to GND when floating; recommended to tie to a known logic level. |+| 3 | A2 | input | Device address input bit 2 (MSB of the 3-bit device-select field). Hardwired to VCC or GND to give the device a unique 2-wire slave address. Internal pull-down to GND when floating. |+| 4 | GND | power_in | Device ground reference (0 V). |+| 5 | SDA | bidirectional | I²C serial data. Bidirectional open-drain line; requires an external pull-up to VCC. Wire-ORable with any number of other open-drain / open-collector devices on the same 2-wire bus. Input capacitance 8 pF max. |+| 6 | SCL | input | I²C serial clock input. Positive-edge clocks data into the EEPROM and negative-edge clocks data out. Schmitt-triggered, filtered input; 400 kHz at 1.7 V, up to 1 MHz at 2.5-5.0 V. Input capacitance 6 pF max. |+| 7 | WP | input | Write-Protect input. Tie to GND for normal read/write operation; tie to VCC to inhibit all write operations (full array protected). Internal pull-down to GND when floating; Atmel recommends always tying to a known state (≤10 kΩ if using a pull-up). |+| 8 | VCC | power_in | Device power supply, 1.7 V to 5.5 V. Typical supply currents: 0.4 mA read / 2.0 mA write at 5.0 V; standby current 1 µA (1.7 V) / 6 µA (5.0 V). Absolute max 6.25 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Microchip Tech |+| Package | SOIC-8 |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `AT24C64D-SSHM-TSSHM-T`++## CAD (KiCad official)++- Symbol: `AT24C64D-SSHM-T`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip Tech datasheet](docs/at24c64d-sshm-t-datasheet.pdf) (24 pp, sha256 `f53715f452b00601`, 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/at24c64d-sshm-t-datasheet.pdf)

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