AT24C02CM

@@ -0,0 +1,51 @@+# AT24C02CM++**HGSEMI** · EEPROM · SOP-8++AT24C02CM from HGSEMI, 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 | E0 | input | Device address input bit 0. Hard-wired to VCC or GND to set the LSB of the I2C slave address, allowing up to eight AT24C02C devices on one bus. Internally pulled down to GND if left floating. |+| 2 | E1 | input | Device address input bit 1. Hard-wired to VCC or GND to set the middle bit of the I2C slave address. Internally pulled down to GND if left floating. |+| 3 | E2 | input | Device address input bit 2. Hard-wired to VCC or GND to set the MSB of the three-bit hard-wired portion of the I2C slave address. Internally pulled down to GND if left floating. |+| 4 | GND | power_in | Ground reference for the supply and I2C signals. Connect to system ground. |+| 5 | SDA | bidirectional | I2C serial data line. Open-drain bidirectional pin used to serially transfer address and data. Requires an external pull-up resistor to VCC. Incorporates a Schmitt-trigger input with integrated spike-suppression filter. |+| 6 | SCL | input | I2C serial clock input. Data on SDA is latched on the rising edge and clocked out on the falling edge. Requires an external pull-up resistor to VCC. Supports up to 1 MHz. |+| 7 | WP | input | Hardware Write Protection. Tie to VCC to write-protect the entire memory array (device becomes read-only); tie to GND to enable writes. Internally pulled down to GND if left floating. When WP is high the device ACKs address bytes but NACKs data bytes. |+| 8 | VCC | power_in | Device power supply, 1.7 V to 5.5 V. Bypass to GND with a local decoupling capacitor. Operation at voltages outside this range is not recommended. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `AT24C02CMCM/TR`+- `AT24C02CMCMT/TR`+- `AT24C02CMCMM/TR`+- `AT24C02CMCDQ/TR`+- `AT24C02CMCM5/TR`++## CAD (KiCad official)++- Symbol: `AT24C02CM`+- 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:** [HGSEMI datasheet](docs/at24c02cm-datasheet.pdf) (26 pp, sha256 `33906220275012e7`, 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/at24c02cm-datasheet.pdf)

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