DS2406P/TR Ver la hoja de datos (PDF) - Maxim Integrated
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DS2406P/TR Datasheet PDF : 31 Pages
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DS2406
OVERVIEW
The block diagram in Figure 1 shows the relationships between the major control and memory sections of
the DS2406. The device has four major data components: 64-bit lasered ROM, 1024 bits of EPROM data
memory, status memory, and the PIO-control block. The hierarchical structure of the 1-Wire protocol is
shown in Figure 2. The bus master must first provide one of the five ROM function commands: Read
ROM, Match ROM, Search ROM, Skip ROM, or Conditional Search ROM. The protocol required for
these ROM functions is described in Figure 13. After a ROM functions command is successfully
executed, the PIO-control and memory functions become accessible and the master may provide any one
of the six memory- and control function commands. The protocol for these functions is described in
Figure 7. All data is read and written least significant bit first.
HIERARCHICAL STRUCTURE FOR 1-Wire PROTOCOL Figure 2
Bus
Master
1-Wire Bus
Other
Devices
Command
Level
1-Wire ROM Function
Commands (see Figure 13)
DS2406 specific
Memory Function
Commands (see Figure 7)
DS2406
Available
Commands
Read ROM
Match ROM
Search ROM
Skip ROM
Conditional
Search ROM
Data Fields
Affected
64-bit ROM
64-bit ROM
64-bit ROM
N/A
64-bit ROM,
Conditional Search Settings
at Status Memory Location 7,
Device/Channel Status
Write Memory
Write Status
Read Memory
Read Status
Ext. Read Memory
Channel Access
1024-bit EPROM
Status Memory
1024-bit EPROM
Status Memory
1024-bit EPROM
PIO Channels
3 of 31
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