8.3.2.1 Normal Read: $B2 or $B6 (Read User Zone or System Read)
The CryptoMemory® normal read command looks like a TWI write command (LSB of
the first byte = 0), but after the fourth byte of the command the CryptoMemory device will
begin to send data back on the bus. The number of bytes sent by CryptoMemory will be equal to
the value of N.Figure 8-3. CryptoMemory®
Normal Read Command
The response from CryptoMemory will cause contention with the host on a standard TWI bus.
Typically, CryptoMemory cannot be used on a standard TWI bus and requires a modified TWI
protocol to account for the unique read command format.
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