ATECC508A datasheet(46/109 Pages) MICROCHIP

Part #	ATECC508A

Description	Cryptographic Co-processor with Secure Hardware-Based Key Storage

PDF	109 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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If the device does ACK the device address, the system should reset the internal address

counter to force the ATECC508A to ignore any partial input command that may have been

sent. This can be accomplished by sending a write sequence to word address 0x00 (Reset),

followed by a Stop condition.

If the device does not respond to the device address with an ACK, then it may be asleep. In this

case, the system should send a complete Wake token and wait tWHI after the rising edge. The

system may then send another read sequence, and if synchronization has completed, the device

will ACK the device address.

If the device still does not respond to the device address with an ACK, then it may be busy

executing a command. The system should wait the longest tEXEC (max) and then send the read

sequence, which will be acknowledged by the device.

ATECC508A

I2C Interface

Datasheet Complete

DS20005927A-page 46

ATECC508A Datasheet(PDF) 46 Page - Microchip Technology