component

AT24C128-HXY

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by Ray

HXY MOSFET EEPROM, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentmemoryat24c128-hxy
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Symbol & Footprint

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Contents

README

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AT24C128-HXY

HXY MOSFET · EEPROM · SOP-8

AT24C128-HXY from HXY MOSFET, 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 address input bit 0. Hard-wire to VSS or VCC to set the chip's 3-bit I2C hardware address, allowing up to 8 devices on the same 2-wire bus. Floating pins are internally read as VSS (low).
2 A1 input Device address input bit 1. Hard-wire to VSS or VCC to set the chip's 3-bit I2C hardware address. Floating pins are internally read as VSS (low).
3 A2 input Device address input bit 2. Hard-wire to VSS or VCC to set the chip's 3-bit I2C hardware address. Floating pins are internally read as VSS (low).
4 VSS power_in Negative power supply / ground reference (0 V).
5 SDA bidirectional I2C serial data line. Bidirectional open-drain; requires an external pull-up resistor to VCC. May be wired-OR with other open-drain devices on the same bus.
6 SCL input I2C serial clock input. Positive edge clocks data into the EEPROM; negative edge clocks data out. Max clock rate 400 kHz at 2.2-5.5V, 1 MHz at 2.5-5.5V.
7 WP input Write protect. When tied to VCC, the entire 128K array is write-protected (device operates as a serial ROM). When tied to VSS or left floating, normal read/write operations are permitted.
8 VCC power_in Positive supply voltage, 2.2 V to 5.5 V. Standby current ~1 uA typ; read current ~2 mA typ at 400 kHz; write current ~5 mA max at 400 kHz.

Key specifications

Parameter Value
Manufacturer HXY MOSFET
Package SOP-8
Category Memory
Pins 8

CAD (KiCad official)

  • Symbol: AT24C128-HXY
  • 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: HXY MOSFET datasheet (11 pp, sha256 319b055bd9031a8d, 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