AT24C02CN

@@ -0,0 +1,52 @@+# AT24C02CN++**HGSEMI** · EEPROM · DIP-8++AT24C02CN from HGSEMI, in a DIP-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 | E0 | input | Device address input bit 0. Hard-wire to VCC or GND to set one of the three lower address bits, allowing up to eight AT24C02C devices on a single I2C bus. Internally pulled down to GND if left floating. Schmitt-trigger, filtered input. |+| 2 | E1 | input | Device address input bit 1. Hard-wire to VCC or GND to set the device address; internally pulled down to GND if left floating. |+| 3 | E2 | input | Device address input bit 2. Hard-wire to VCC or GND to set the device address; internally pulled down to GND if left floating. |+| 4 | GND | power_in | Ground reference for the power supply. Connect to system ground. |+| 5 | SDA | bidirectional | Serial Data. Open-drain bidirectional I2C data line; requires an external pull-up resistor to VCC. Data is latched on the rising edge of SCL and output on the falling edge of SCL. |+| 6 | SCL | input | Serial Clock input. Clocks data into and out of the device on the SDA line. Command/input data on SDA is latched on the rising edge of SCL; output data is clocked out on the falling edge of SCL. |+| 7 | WP | input | Write Protect. Tie to VCC to hardware write-protect the entire memory array and Identification Page (device becomes read-only). Tie to GND (or leave floating; internal pull-down to GND) to enable write operations. When WP is high, device address and word address bytes are ACK'd but data bytes are not. |+| 8 | VCC | power_in | Device power supply, 1.7 V to 5.5 V. Standby current 1 uA max; read/write current 0.5 mA max. Bypass with a local decoupling capacitor to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | DIP-8 |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `AT24C02CNN`+- `AT24C02CNM/TR`+- `AT24C02CNMM/TR`+- `AT24C02CNMT/TR`+- `AT24C02CNDQ/TR`+- `AT24C02CNM5/TR`++## CAD (KiCad official)++- Symbol: `AT24C02CN`+- Footprint: `Package_DIP:DIP-8_W7.62mm`+- 3D model: DIP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HGSEMI datasheet](docs/at24c02cn-datasheet.pdf) (27 pp, sha256 `02466a83d5aae04e`, 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/at24c02cn-datasheet.pdf)

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