AT24C04CDRG

@@ -0,0 +1,53 @@+# AT24C04CDRG++**HANSCHIP semiconductor** · EEPROM · SOP-8++AT24C04CDRG from HANSCHIP semiconductor, 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. Leave floating or tie to GND; not used in the 8-pin SOP/DIP/MSOP package. |+| 2 | E1 | input | Device address input bit 1. Hard-wired to VCC or GND to set the chip's I2C slave address; internally pulled down to GND if left floating. Provides compatibility with other 2-wire Serial EEPROMs. |+| 3 | E2 | input | Device address input bit 2. Hard-wired to VCC or GND to set the chip's I2C slave address; internally pulled down to GND if left floating. |+| 4 | GND | power_in | Ground reference for the power supply. Must be connected to the system ground. |+| 5 | SDA | bidirectional | I2C Serial Data. Open-drain bidirectional data line; requires an external pull-up resistor to VCC. Data changes only while SCL is low and is stable while SCL is high. |+| 6 | SCL | input | I2C Serial Clock input. Provides the clock that latches command/data on SDA rising edges and clocks output data on SDA falling edges. Supports 400 kHz Fast-mode and 1 MHz High-Speed. |+| 7 | WP | input | Hardware Write Protection. When tied to VCC, the entire memory array becomes read-only; when tied to GND, writes are enabled. Internally pulled down to GND if left floating. |+| 8 | VCC | power_in | Device power supply, 1.7 V to 5.5 V. Should be bypassed with a local decoupling capacitor to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HANSCHIP semiconductor |+| Package | SOP-8 |+| Category | Memory |+| Pins | 8 |++## Ordering variants++- `AT24C04CDRG`+- `AT24C04CDRG4`+- `AT24C04CDRGCPG`+- `AT24C04CDRGCDGKRG`+- `AT24C04CDRGCPWRG`+- `AT24C04CDRGCRG`+- `AT24C04CDRGCDBVRG`++## CAD (KiCad official)++- Symbol: `AT24C04CDRG`+- 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:** [HANSCHIP semiconductor datasheet](docs/at24c04cdrg-datasheet.pdf) (25 pp, sha256 `9492833a9d4101cf`, 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/at24c04cdrg-datasheet.pdf)

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