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Microchip Technology ATSHA204A-MAHDA-S
- Part No.:
- ATSHA204A-MAHDA-S
- Manufacturer:
- Microchip Technology
- Category:
- Specialized ICs
- Package:
- 8-UFDFN Exposed Pad
- Description:
- IC AUTHENTICATION CHIP 8UDFN
- Quantity:
Unit Price:$0.34
Ext Price:$0.34
- Payment:
- Shipping:
Product Details
ATSHA204A-MAHDA-S - SHA-256 I2C Authentication IC, UDFN
ATSHA204A-MAHDA-S from Microchip Technology is a SHA-256 symmetric-authentication device with protected key storage in an 8-pad, 2 x 3 mm UDFN small reel.
Specifications were checked against the manufacturer data sheet and current distributor listing.
Overview
ATSHA204A performs SHA-256 based challenge-response operations and stores keys in protected EEPROM slots. The MAHDA-S order code selects the I2C interface, 8-pad UDFN package and 3,000-piece small reel.
Key Advantages
Keeps authentication keys in dedicated hardware.
Uses a compact 2 x 3 mm surface-mount package.
Available in an established surface-mount or through-hole ordering format.
Electrical and environmental limits are defined by the official data sheet.
Feature Summary
SHA-256 symmetric authentication
I2C, up to 1 MHz
2.0 to 5.5 V supply; -40 to +85 C
8-UFDFN Exposed Pad
Package & Footprint
This ordering code uses the 8-UFDFN Exposed Pad package.
Pin Functions
Confirm exact numbering and the latest land pattern before PCB release.
Key Specifications
| Function | SHA-256 symmetric authentication |
|---|---|
| Key storage | Up to 16 slots |
| EEPROM | 4.5 Kbit for keys and data |
| OTP memory | 512 bits |
| Unique serial number | 72 bits |
| Interface | I2C, up to 1 MHz for DA variant |
| Supply | 2.0 to 5.5 V |
| Communication voltage | 1.8 to 5.5 V |
| Sleep current | 150 nA maximum under stated conditions |
| Operating temperature | -40 to +85 C |
| Authentication | SHA-256 MAC and HMAC options |
| Ordering code | DA denotes I2C interface |
| Package | 8-pad UDFN, 2 x 3 mm |
| Packaging | Small tape and reel, 3,000 pieces |
Replacement Considerations
ATSHA204A-MAHDA-T is a related product in the library. Confirm electrical behavior, package, pinout, ordering media and configuration before substitution.
Similarity of family name or package does not establish drop-in compatibility.
Manufacturer Information
Microchip lists ATSHA204A in production; the official DS40002025A data sheet defines DA-interface and package ordering.
Applications
Authenticate consumables and replaceable modules.
Store protected symmetric secrets for networked products.
Quality & Authenticity
Match the complete ordering code, package marking and reel or lot label to authorized-channel records. Inspect moisture handling and solderability requirements before assembly.
FAQ
What is the main function?
SHA-256 symmetric authentication
What package is used?
8-UFDFN Exposed Pad
Can the related part be substituted directly?
No. Validate all electrical, mechanical and configuration differences first.
Is the package image ready?
No. The registered package JPG is currently missing.
Engineering Notice
Use the latest manufacturer documentation for schematic, PCB, thermal and production approval. Distributor attributes are useful for sourcing but do not replace the official data sheet.
ATSHA204A-MAHDA-S Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- CryptoAuthentication™
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Authentication Chip
- Applications:
- Networking and Communications
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
- Grade:
- -
- Qualification:
- -
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Inventory:477
Please send an inquiry. Send us your inquiry, and we will respond immediately.
In Stock:477
| Qty. | Unit Price | Ext. Price |
| 1+ | $0.34 | $0.34 |
| 25+ | $0.33 | $8.25 |
| 3000+ | $0.27 | $810.00 |
