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ATECC508A датащи(PDF) 51 Page - Microchip Technology

номер детали ATECC508A
подробное описание детали  Cryptographic Co-processor with Secure Hardware-Based Key Storage
PDF  109 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

ATECC508A датащи(HTML) 51 Page - Microchip Technology

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Parameter
Symbol
Direction
Min Typ Max Unit Notes
Start Pulse
Duration
tSTART
To Crypto
Authentication
4.10 4.34 4.56
µs
From Crypto
Authentication
4.60
6
8.60
µs
Zero Transmission
High Pulse
tZHI
To Crypto
Authentication
4.10 4.34 4.56
µs
From Crypto
Authentication
4.60
6
8.60
µs
Zero Transmission
Low Pulse
tZLO
To Crypto
Authentication
4.10 4.34 4.56
µs
From Crypto
Authentication
4.60
6
8.60
µs
Bit Time(Note)
tBIT
To Crypto
Authentication
37
39
—
µs
If the bit time exceeds
tTIMEOUT then ATECC508A
may enter the sleep mode.
See Section I/O Timeout.
From Crypto
Authentication
41
54
78
µs
Turn Around Delay tTURNAROUND From Crypto
Authentication
64
96
131
µs
ATECC508A will initiate the
first low going transition after
this time interval following the
initial falling edge of the start
pulse of the last bit of the
transmit flag.
To Crypto
Authentication
93
µs
After ATECC508A transmits
the last bit of a group, system
must wait this interval before
sending the first bit of a flag. It
is measured from the falling
edge of the start pulse of the
last bit transmitted by
ATECC508A.
IO Timeout
tTIMEOUT
To Crypto
Authentication
45
65
85
ms ATECC508A may transition to
the sleep mode if the bus is
inactive longer than this
duration. See Section I/O
Timeout.
Note:  START, ZLO, ZHI, and BIT are designed to be compatible with a standard UART running at 230.4
Kbaud for both transmit and receive. The UART should be set to seven data bits, no parity and one stop
bit.
ATECC508A
Electrical Characteristics
© 2017 Microchip Technology Inc.
Datasheet Complete
DS20005927A-page 51



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