ATSHA204 Datasheet, PDF (1/65 Pages) ATMEL Corporation – Atmel CryptoAuthentication

Figure 1. Pin Configurations
Pin Name
SDA
SCL
GND
V_CC
Function
Serial Data
Serial Clock Input
Ground
Power Supply
Atmel ATSHA204
Atmel CryptoAuthentication
DATASHEET
Features
• Secure authentication and validation device
• Integrated capability for both host and client operations
• Superior SHA-256 hash algorithm, HMAC option
• Best-in-class, 256-bit key length; storage for up to 16 keys
• Guaranteed unique 72-bit serial number
• Internal, high-quality Random Number Generator (RNG)
• 4.5-Kbit EEPROM for keys and data
• 512 OTP (One Time Programmable) bits for fixed information
• Multiple I/O options
• High-speed, single-wire interface
• 1MHz I²C interface
• 2.0V – 5.5V supply voltage range
• 1.8V – 5.5V communications
• <150nA sleep current
• Extended, multi-level hardware security
• 8-lead SOIC, 8-lead TSSOP, 3-lead SOT23, 8-pad UDFN, and
3-lead Contact packages
Applications
• Anti-clone protection for accessories, daughter cards, and consumables
• Secure boot validation, software anti-piracy
• Network and computer access control
• Key exchange for encrypted downloads
• Authenticated/encrypted communications for control networks
3-lead Contact
8-lead SOIC
8-lead TSSOP
8-lead UDFN
NC 1
8
V_CC
NC 1
8
V_CC
V_CC 8
1 NC
1
SDA NC 2
7 NC
NC 2
7 NC
NC 7 2 NC
NC 3
6 SCL NC 3
6 SCL SCL 6 3 NC
GND 4
5 SDA GND 4
5 SDA SDA 5 4 GND
2
GND
3-lead SOT23
Bottom View
3
V_CC
2
V_CC
GND 3
1 SDA
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