ATSHA204A-SSHDA-B
Public Unreviewedby Ray
Microchip Security Verification / Encryption ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownATSHA204A-SSHDA-B
Microchip · Security Verification / Encryption ICs · SOIC-8
ATSHA204A-SSHDA-B 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; not internally bonded. |
| 2 | NC | unconnected | No connect. Leave floating or tie to ground; not internally bonded. |
| 3 | NC | unconnected | No connect. Leave floating or tie to ground; not internally bonded. |
| 4 | GND | power_in | Ground reference for the device. Connect to the system ground plane. |
| 5 | SDA | bidirectional | I2C serial data, open-drain. Requires an external pull-up resistor to VCC (typically 4.7kΩ-10kΩ). Supports I2C speeds up to 1Mb/s. |
| 6 | SCL | input | I2C serial clock input. Requires an external pull-up resistor to VCC. Supports clock rates up to 1MHz. |
| 7 | NC | unconnected | No connect. Leave floating or tie to ground; not internally bonded. |
| 8 | VCC | power_in | Positive supply voltage, 2.0V to 5.5V. Bypass to GND with a 0.1µF ceramic capacitor placed close to the pin. Communications voltage range is 1.8V-5.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip |
| Package | SOIC-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
ATSHA204A-SSHDA-BATSHA204A-SSHDA-BSSHDA-TATSHA204A-SSHDA-BSSHCZ-TATSHA204A-SSHDA-BXHDA-TATSHA204A-SSHDA-BXHCZ-TATSHA204A-SSHDA-BMAHDA-TATSHA204A-SSHDA-BMAHCZ-TATSHA204A-SSHDA-BMXHDA-TATSHA204A-SSHDA-BMXHCZ-TATSHA204A-SSHDA-BSTUCZ-TATSHA204A-SSHDA-BRBHCZ-T
CAD (KiCad official)
- Symbol:
ATSHA204A-SSHDA-B - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
atsha204a-sshda-b.step |
122 KB | You want the bare part, or you mark your own boards. |
atsha204a-sshda-b-etched.step |
2.9 MB | You want the part with ATSHA204A-SSHDA-B already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 726 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 (82 pp, sha256
3b95573a6323cd85, 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).