DS1961S-F5 Maxim Integrated Products, DS1961S-F5 Datasheet - Page 4

• Manufacturer Part Number: DS1961S-F5
• Description: DS1961S 1kb Protected EePROM Ibutton With SHA-1 Engine
• Manufacturer: Maxim Integrated Products

Figure 2. HIERARCHICAL STRUCTURE FOR 1-WIRE PROTOCOL
Figure 3. 64-BIT LASERED ROM
MSB
MSB
Master
Command
Level:
8-Bit CRC Code
Bus
Commands (See Figure 9)
Commands (See Figure 7)
1-Wire ROM Function
DS1961S-Specific
Memory Function
LSB
MSB
1-Wire Net
DS1961S
Available
Commands:
Read ROM
Match ROM
Search ROM
Skip ROM
Resume
Overdrive Skip
Overdrive Match
Write Scratchpad
Read Scratchpad
Load First Secret
Compute Next Secret
Copy Scratchpad
Read Authenti-
Read Memory
Refresh Scratchpad
48-Bit Serial Number
cated Page
4 of 36
Data Field
Affected:
64-bit Reg. #, RC-Flag
64-bit Reg. #, RC-Flag
64-bit Reg. #, RC-Flag
RC-Flag
RC-Flag
64-bit Reg. #, RC-Flag, OD-Flag
64-bit Reg. #, RC-Flag, OD-Flag
64-bit Scratchpad, Flags
64-bit Scratchpad
Secret, Flags; Data Memory (after
Secret, Data Memory, Scratchpad
Data Memory or Register Page,
Data Memory, Secret, 64-bit Reg. #,
Data Memory, Register Page, Reg. #
64-bit Scratchpad, Data Memory,
Devices
LSB
Other
Refresh Scratchpad)
Secret, Flags, 64-Bit Reg. #,
3-Byte Challenge in Scratchpad
Flags
MSB
8-Bit Family Code (33h)
LSB
LSB