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ZL9101M Datasheet(PDF) 14 Page - Intersil Corporation

Part No. ZL9101M
Description  Digital DC/DC PMBus 12A Module
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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ZL9101M Datasheet(HTML) 14 Page - Intersil Corporation

 
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ZL9101M
14
FN7669.1
January 26, 2011
a process that requires between 700µs to 1400µs depending on
whether the data is set up for a block write. Undesirable results
may be observed if the device’s VDD supply drops below 3.0V
during this process.
In the event that the module experiences a fault and power is
lost, the user can extract the last SNAPSHOT parameters stored
during the fault by writing a 1 to SNAPSHOT_CONTROL (transfers
data from Flash memory to RAM) and then issuing a SNAPSHOT
command (reads data from RAM via SMBus).
Non-Volatile Memory and Device Security
Features
The ZL9101M has internal non-volatile memory where user
configurations are stored. Integrated security measures ensure
that the user can only restore the module to a level that has been
made available to them.
During the initialization process, the ZL9101M checks for stored
values contained in its internal non-volatile memory. The
ZL9101M offers two internal memory storage units that are
accessible by the user as follows:
1. Default Store: The ZL9101M has a default configuration that
is stored in the Default Store in the controller. The module can
be restored to its default settings by issuing a
RESTORE_DEFAULT_ALL command over the SMBus.
2. User Store: The user can modify certain power supply settings
as described in this data sheet. The user would use the User
Store to store their configuration.
Please refer to Application Note AN2033 for details on how to set
specific security measures via the I2C/SMBus interface.
TABLE 3. SNAPSHOT_CONTROL COMMAND
DATA
VALUE
DESCRIPTION
1
Copies current SNAPSHOT values from Flash memory to
RAM for immediate access using SNAPSHOT command.
2
Writes current SNAPSHOT values to Flash memory. Only
available when device is disabled.


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