DS2465 MAXIM [Maxim Integrated Products], DS2465 Datasheet - Page 25

• Manufacturer Part Number: DS2465
• Description: SHA-256 Coprocessor with 1-Wire Master Function
• Manufacturer: MAXIM [Maxim Integrated Products]

This behavior applies to the
is used to set the address for a subsequent read access
(dummy write); data bytes are not acknowledged. When
accessed in read mode, the address does not increment.
This behavior is similar to type 1, but data bytes are
discarded. It applies to EEPROM locations and some
read-only addresses. Write mode access is used to
set the address for a subsequent read access (dummy
write); the address increments after a data byte has
been acknowledged. When accessed in read mode, the
address increments after a byte is transmitted.
SHA-256 Coprocessor with 1-Wire Master Function
1-Wire Master Status register. Write mode access
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Type 3 Behavior
Type 4 Behavior
See
legend and data direction codes.
Table 26. I
Table 27. Data Direction Codes
SYMBOL
<byte>
1WWB
1WMR
1WRS
1WSB
1WRB
1WRB
AD, 0
AD, 1
(Idle)
CPS
1WT
Table 26
Sr
A\
A
S
P
Master-to-Slave Slave-to-Master (DS2465 busy)
I
2
C Communication Examples
2
START Condition
Select DS2465 for Write Access
Select DS2465 for Read Access
Repeated START Condition
STOP Condition
Acknowledged
Not Acknowledged
Bus Not Busy
Transfer of One Byte
Command “Copy Scratchpad”, 5Ah
Command “1-Wire Master Reset”, F0h
Command “1-Wire Reset Pulse”, B4h
Command “1-Wire Single Bit”, 87h
Command “1-Wire Write Byte”, A5h
Command “1-Wire Read Byte”, 96h
Command “1-Wire Triplet”, 78h
Command “1-Wire Receive Block”, E1h
and
C Communication—Legend
Refer to the full data sheet.
Refer to the full data sheet.
Table 27
DESCRIPTION
for the I
2
C communication
DS2465