AT24C04CM

@@ -0,0 +1,53 @@+# AT24C04CM++**HGSEMI** · EEPROM · SOP-8++AT24C04CM 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 | NC | unconnected | No internal connection. May be left floating or tied to any potential. |+| 2 | E1 | input | Device address input bit 1. Combined with E2 forms the 2-bit hard-wired chip address inside the I2C device address byte, allowing multiple devices on the same bus. Tie to VCC or GND; if left floating, an internal pull-down forces it to GND. |+| 3 | E2 | input | Device address input bit 2. Combined with E1 forms the 2-bit hard-wired chip address inside the I2C device address byte. Tie to VCC or GND; if left floating, an internal pull-down forces it to GND. |+| 4 | GND | power_in | Ground reference for the power supply and I2C interface. Connect to system ground. |+| 5 | SDA | bidirectional | I2C serial data. Open-drain bidirectional line for command, address, and data transfer; requires an external pull-up resistor to VCC. Data is latched on the rising edge of SCL and shifted out on the falling edge. Input capacitance up to 8 pF. |+| 6 | SCL | input | I2C serial clock input driven by the bus master. Controls data flow on SDA; supports 400 kHz Fast-Mode and 1 MHz High-Speed operation. Schmitt-triggered with input filtering for noise suppression. |+| 7 | WP | input | Hardware write protect. When tied to VCC the entire memory array (and Identification Page) is Read-only; when tied to GND write operations are enabled. If left floating an internal pull-down defaults the pin to GND (writes enabled). |+| 8 | VCC | power_in | Device power supply, 1.7 V to 5.5 V. Standby current 1 uA max, read 0.5 mA max, write 1 mA max. Bypass locally to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `AT24C04CMCM/TR`+- `AT24C04CMCN`+- `AT24C04CMCMM/TR`+- `AT24C04CMCMT/TR`+- `AT24C04CMCDQ3/TR`+- `AT24C04CMCDQ2/TR`+- `AT24C04CMCM5/TR`++## CAD (KiCad official)++- Symbol: `AT24C04CM`+- 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/at24c04cm-datasheet.pdf) (26 pp, sha256 `38c548dbc7c3897e`, 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/at24c04cm-datasheet.pdf)

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