AT24C02M

@@ -0,0 +1,54 @@+# AT24C02M++**HGSEMI** · EEPROM · SOP-8++AT24C02M 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 | Hardware slave-address bit 0. Tie to VCC or VSS to set one bit of the device's I2C slave address; if left floating the pin is internally pulled down to VSS. Schmitt-triggered CMOS input. |+| 2 | E1 | input | Hardware slave-address bit 1. Tie to VCC or VSS to set one bit of the device's I2C slave address; internally pulled down to VSS if floating. |+| 3 | E2 | input | Hardware slave-address bit 2. Tie to VCC or VSS to set one bit of the device's I2C slave address; internally pulled down to VSS if floating. Allows up to 8 AT24C02 devices on the same I2C bus. |+| 4 | Vss | power_in | Ground reference for the VCC supply. |+| 5 | SDA | bidirectional | I2C serial data. Bidirectional open-drain pin; requires an external pull-up resistor and may be wire-OR'ed with other open-drain devices on the bus. |+| 6 | SCL | input | I2C serial clock input. Positive edges clock data in and negative edges clock data out. Supports up to 400 kHz (standard) / 1 MHz (high-speed). |+| 7 | WCB | input | Write Control, active-low write enable. When tied to VCC all write operations to the memory are inhibited; when tied to VSS normal writes are allowed. Internally pulled down to VSS if left floating (writes enabled by default). |+| 8 | VCC | power_in | Positive supply voltage, 1.7 V to 5.5 V. Typical Icc is 0.2 mA read / 0.8 mA write at 400 kHz; standby current 1 uA at 3.3 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `AT24C02MM/TR`+- `AT24C02MM-4K/TR`+- `AT24C02MN`+- `AT24C02MMM/TR`+- `AT24C02MMT/TR`+- `AT24C02MDQ3/TR`+- `AT24C02MDQ2/TR`+- `AT24C02MM5/TR`++## CAD (KiCad official)++- Symbol: `AT24C02M`+- 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/at24c02m-datasheet.pdf) (18 pp, sha256 `14a1ed1066ebdfb3`, 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/at24c02m-datasheet.pdf)

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