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ATSHA204A-SSHDA-B
IC AUTH SHA-256 256-BIT KEY 8-SOIC
Microchip Technology
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Design a Custom BoardAbout This Component
Microchip CryptoAuthentication IC with hardware-based 256-bit key storage and SHA-256/HMAC capabilities. Features 4.5 kB EEPROM for up to 16 keys, unique 72-bit serial number, and integrated RNG. Supports I2C (1 MHz) and single-wire UART interfaces, operating from 2.0V to 5.5V. Ideal for secure boot, anti-cloning, and message authentication applications.
Package: SOIC-8 (3.9×4.9mm) · 8 pins
Why does this need a breakout?
An 8-pin SOIC with 1.27mm pitch is too fine for breadboards and hand-soldering without a microscope. A breakout board routes these pins to standard 0.1" headers, enabling rapid prototyping and reliable connections for op-amps, transceivers, and small power MOSFETs without requiring reflow equipment.
Specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Microchip Technology |
| Part Number | ATSHA204A-SSHDA-B |
| Package | SOIC-8 (3.9×4.9mm) |
| Pin Count | 8 |
| Type | Authentication Chip |
What's Included
BILL OF MATERIALS
- 1x ATSHA204A-SSHDA-B soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS
WIDTH
< 0.9" (straddles breadboard)
PITCH
2.54mm standard
SOLDER
Lead-free, reflow assembled
FINISH
FR4, lead-free HASL