AT24C256M

@@ -0,0 +1,43 @@+# AT24C256M++**HGSEMI** · EEPROM · SOP-8++AT24C256M 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 | A0 | input | Device/chip select address input bit 0. Hardwired to VIH or VIL to set the slave address; if left unconnected it is internally recognized as VIL. |+| 2 | A1 | input | Device/chip select address input bit 1. Hardwired to VIH or VIL to set the slave address; if left unconnected it is internally recognized as VIL. |+| 3 | A2 | input | Device/chip select address input bit 2. Hardwired to VIH or VIL to set the slave address; if left unconnected it is internally recognized as VIL. |+| 4 | GND | power_in | Ground reference for the device. |+| 5 | SDA | bidirectional | Serial data line. Bi-directional, open-drain output; requires an external pull-up resistor and can be wire-OR'd with other open-drain devices on the two-wire bus. |+| 6 | SCL | input | Serial clock input. Rising edge latches data into the EEPROM; falling edge clocks data out. Max 1 MHz at 2.5-5V, 400 kHz at 1.8V. |+| 7 | WP | input | Write-protect input. Tie to VIL (or leave unconnected) to allow programming; tie to VIH/VCC to disable all program/erase operations. Read operations are unaffected. |+| 8 | VCC | power_in | Supply voltage input, 1.8V to 5.5V. Absolute maximum 8V; decouple locally with a 0.1 uF ceramic capacitor to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | Memory |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `AT24C256M`+- 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/at24c256m-datasheet.pdf) (11 pp, sha256 `d7220784e4d64aba`, 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/at24c256m-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "at24c256m",+  "version": "0.1.0",+  "type": "component",+  "description": "HGSEMI EEPROM, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "memory",+    "at24c256m"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "at24c256m.kicad_sym",+    "at24c256m.kicad_mod",+    "at24c256m.glb",+    "at24c256m.step",+    "at24c256m.lbr",+    "docs/hero.png",+    "docs/at24c256m-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file