AT24C64

@@ -0,0 +1,48 @@+# AT24C64++**IDCHIP** · EEPROM · SOP-8++AT24C64 from IDCHIP, 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. Hard-wired to VCC or GND to set the lower bit of the 7-bit I2C slave address, allowing up to 8 devices on the same I2C bus. |+| 2 | A1 | input | Device address input bit 1. Hard-wired to VCC or GND to set the middle bit of the 7-bit I2C slave address. |+| 3 | A2 | input | Device address input bit 2. Hard-wired to VCC or GND to set the upper bit of the 7-bit I2C slave address. |+| 4 | GND | power_in | Ground reference (0V, power negative). |+| 5 | SDA | bidirectional | I2C serial data line, open-drain. Requires an external pull-up resistor (typ. 10kΩ) to VCC. Transfers address and data bytes between master and EEPROM. |+| 6 | SCL | input | I2C serial clock input from the bus master. Supports up to 1MHz at Vcc=2.7V/5V and 400kHz at Vcc=1.8V. Requires an external pull-up resistor to VCC. |+| 7 | WP | input | Hardware write protect input. When tied to VCC, write operations to the array are inhibited; when tied to GND, normal read/write is allowed. |+| 8 | VCC | power_in | Positive supply voltage, 1.8V to 5.5V (absolute max 5.5V). Decouple to GND with a 100nF (typ. 1uF) ceramic capacitor close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | IDCHIP |+| Package | SOP-8 |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `AT24C64SOP-8`+- `AT24C64DIP-8`++## CAD (KiCad official)++- Symbol: `AT24C64`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [IDCHIP datasheet](docs/at24c64-datasheet.pdf) (12 pp, sha256 `5aee857d33cea1b6`, retrieved 2026-08-17, tier: lcsc)+- **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/at24c64-datasheet.pdf)

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