DS1996 Maxim, DS1996 Datasheet - Page 6

• Manufacturer Part Number: DS1996
• Description: The DS1996 Memory iButton is a rugged read/write data carrier that acts as a localized database that can be easily accessed with minimal hardware
• Manufacturer: Maxim

DS1996
Write Scratchpad Command [0FH]
After issuing the write scratchpad command, the master must first provide the 2-byte target address,
followed by the data to be written to the scratchpad. The data will be written to the scratchpad starting at
the byte offset (T4:T0). The ending offset (E4: E0) will be the byte offset at which the bus master has
stopped writing data.
Read Scratchpad Command [AAH]
This command is used to verify scratchpad data and target address. After issuing the read scratchpad
command, the master begins reading. The first 2 bytes will be the target address. The next byte will be the
ending offset/data status byte (E/S) followed by the scratchpad data beginning at the byte offset (T4: T0).
The master may read data until the end of the scratchpad after which the data read will be all logic 1’s.
DS1996 MEMORY MAP Figure 5
ADDRESS REGISTERS Figure 6
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