component
AT24C256M
Public Made by Adomby adom
HGSEMI EEPROM, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAT24C256M
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)
- 3D model files:
at24c256m-etched.step/at24c256m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);at24c256m.step/at24c256m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (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).