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Generated by kicad-footprint-generator · KiCad file format 20260206

Name	Last commit message	Last updated
docs	atsha204a-sshda-t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	1mo ago
viewers	atsha204a-sshda-t: viewers · Ray	2mo ago
atsha204a-sshda-t-etched.fit.json	atsha204a-sshda-t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	1mo ago
atsha204a-sshda-t-etched.glb	atsha204a-sshda-t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	1mo ago
atsha204a-sshda-t-etched.step	atsha204a-sshda-t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	1mo ago
atsha204a-sshda-t.glb	Publish 0.1.0 · Ray	2mo ago
atsha204a-sshda-t.kicad_mod	Publish 0.1.0 · Ray	2mo ago
atsha204a-sshda-t.kicad_sym	Publish 0.1.0 · Ray	2mo ago
atsha204a-sshda-t.lbr	Publish 0.1.0 · Ray	2mo ago
atsha204a-sshda-t.step	Publish 0.1.0 · Ray	2mo ago
package.json	Publish 0.2.0 · Ray	2mo ago
page.json	atsha204a-sshda-t: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray	28d ago
README.md	atsha204a-sshda-t: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray	1mo ago

ATSHA204A-SSHDA-T

Microchip · Security Verification / Encryption ICs · SOIC-8

ATSHA204A-SSHDA-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	NC	unconnected	No Connect. Leave floating or tie to ground per board convention.
2	NC	unconnected	No Connect. Leave floating or tie to ground per board convention.
3	NC	unconnected	No Connect. Leave floating or tie to ground per board convention.
4	GND	power_in	Ground reference for the device.
5	SDA	bidirectional	Serial Data. Open-drain I2C data line (up to 1 MHz). Requires external pull-up to VCC. On the ATSHA204A-SSHDA variant this device is configured for the I2C interface; on the SWI variant the same pad functions as the Single-Wire Interface data/signal line.
6	SCL	input	Serial Clock Input for the I2C interface. Requires external pull-up to VCC. Not used on the Single-Wire Interface variant.
7	NC	unconnected	No Connect. Leave floating or tie to ground per board convention.
8	VCC	power_in	Power supply input, 2.0V to 5.5V operating range. Bypass with a local decoupling capacitor to GND.

Key specifications

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

Ordering variants

ATSHA204A-SSHDA-T
ATSHA204A-SSHDA-TSSHDA-B

CAD (KiCad official)

Symbol: ATSHA204A-SSHDA-T
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)
3D model files: atsha204a-sshda-t-etched.step / atsha204a-sshda-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsha204a-sshda-t.step / atsha204a-sshda-t.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`atsha204a-sshda-t.step`	122 KB	You want the bare part, or you mark your own boards.
`atsha204a-sshda-t-etched.step`	2.7 MB	You want the part with `ATSHA204A-SSHDA-T` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 690 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 (93 pp, sha256 1eec12abfe0ae347, 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