Details

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BUY DS3691M https://www.utsource.net/itm/p/12442450.html

Parameter	Description	DS3691M Specifications
Device Type	A secure authenticator with SHA-256 and 512-bit user EEPROM	Single-chip solution for secure authentication
Supply Voltage	Operating voltage range	2.7V to 5.5V
Operating Temperature	Temperature range for operation	-40°C to +85°C
Communication Interface	Interface type for data communication	I2C interface
Authentication Algorithm	Security algorithm used	SHA-256
Memory	User EEPROM size	512 bits (64 bytes)
Security Features	Features that enhance security	Secure key storage, challenge/response authentication
Package Type	Physical package of the device	SOIC-8, TSSOP-8
Protection	Built-in protection features	Write protect pin for EEPROM

Instructions for Use:

1. Power Supply Connection: Connect the VCC pin to a power supply within the specified voltage range (2.7V to 5.5V). Ground the GND pin.
2. I2C Communication Setup: Ensure proper setup of the SDA and SCL lines for I2C communication. Pull-up resistors are required on both lines.
3. Initialization: After powering up, initialize the device using the appropriate I2C commands.
4. Secure Key Storage: Store keys in the EEPROM section. Utilize the write protect feature to prevent unauthorized access.
5. Challenge/Response Authentication: Implement the challenge/response protocol using the SHA-256 algorithm for secure authentication.
6. Temperature Considerations: Ensure the operating environment does not exceed the temperature limits (-40°C to +85°C).
7. Handling Precautions: Follow ESD handling precautions to avoid damage to the component.

For detailed command codes and advanced features, refer to the official datasheet provided by the manufacturer.

(For reference only)