component

AT24C128C-SSHM-T

Public Made by Adom

by adom

Microchip EEPROM, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentmemoryat24c128c-sshm-t
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs at24c128c-sshm-t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
at24c128c-sshm-t-etched.fit.json at24c128c-sshm-t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
at24c128c-sshm-t-etched.glb at24c128c-sshm-t: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC… · Ray
at24c128c-sshm-t-etched.step at24c128c-sshm-t: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC… · Ray
at24c128c-sshm-t.glb Publish 0.1.0 · Ray
at24c128c-sshm-t.kicad_mod Publish 0.1.0 · Ray
at24c128c-sshm-t.kicad_sym Publish 0.1.0 · Ray
at24c128c-sshm-t.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
at24c128c-sshm-t.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json at24c128c-sshm-t: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC… · Ray
README.md at24c128c-sshm-t: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

AT24C128C-SSHM-T

Microchip · EEPROM · SOIC-8

AT24C128C-SSHM-T from Microchip, in a SOIC-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-wired to GND or VCC to set the chip's I²C slave address, allowing up to eight AT24C128C devices on one bus. Internally pulled to GND via a weak pull-down (disengages above ~0.5×VCC); Microchip recommends tying to a known state. External pull-up (if used) should be ≤10 kΩ.
2 A1 input Device address input, bit 1. Hard-wired to GND or VCC to select the I²C slave address. Internally pulled down to GND when floating; tie to a known state. External pull-up ≤10 kΩ recommended.
3 A2 input Device address input, bit 2. Hard-wired to GND or VCC to select the I²C slave address. Internally pulled down to GND when floating; tie to a known state. External pull-up ≤10 kΩ recommended.
4 GND power_in Ground reference for the power supply. Connect to the system ground plane.
5 SDA bidirectional I²C serial data - open-drain bidirectional input/output. Requires an external pull-up resistor to VCC (≤10 kΩ). May be wire-ORed with other open-drain devices on the same I²C bus.
6 SCL input I²C serial clock input. Commands and input data on SDA are latched on the rising edge of SCL; output data on SDA is clocked out on the falling edge. Must be driven high or pulled up externally when the bus is idle.
7 WP input Hardware write-protect input. Tie to GND for normal read/write operation; tie to VCC to inhibit all write operations to the entire memory array. Internally pulled down to GND when floating; tie to a known state.
8 VCC power_in Device power supply, 1.7V to 5.5V (2.5V to 5.5V required for 1 MHz Fast Mode Plus operation). Active current 3 mA max; standby current 6 µA max. Decouple with a local ceramic capacitor.

Key specifications

Parameter Value
Manufacturer Microchip
Package SOIC-8
Category Memory
Pins 8

Ordering variants

  • AT24C128C-SSHM-T

CAD (KiCad official)

  • Symbol: AT24C128C-SSHM-T
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: at24c128c-sshm-t-etched.step / at24c128c-sshm-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); at24c128c-sshm-t.step / at24c128c-sshm-t.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
at24c128c-sshm-t.step 122 KB You want the bare part, or you mark your own boards.
at24c128c-sshm-t-etched.step 2.8 MB You want the part with AT24C128C-SSHM-T already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 685 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip datasheet (39 pp, sha256 d583c8741b257ee2, retrieved 2026-08-17, tier: manufacturer)
  • 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