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SMS45
BLOCK
DIAGRAM
(PDF
page
3)
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SMS64
PACKAGE
&
PIN
CONFIGURATION
48 PIN
TQFP
(PDF
page
6)
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SMS64
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Six-Channel
Supply Monitor and
Sequence Controller
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FEATURES
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Monitors
and Controls up
to 6 Power
Supplies
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Programmable
Sequencing for
both Power-on
and
Power-off
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Programmable
Threshold
Sensors
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Programmable
Reset and
Interrupt
Functions
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Programmable
Watchdog/Longdog
Timer
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Fault
and Status
Registers
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4k-Bit
Nonvolatile
Memory
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APPLICATIONS
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Monitor
and Control
Distributed
Power and Point
of Use Power
Supplies
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Telecom
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Compact
PCI
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Servers
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Multi-voltage
Network
Processors,
DSPs
ASICs
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OVERVIEW
The SMS64 is a
highly integrated power
supply monitor and
controller. The SMS64
has six supply managers,
each individually
programmable with regard
to threshold voltages,
actions that can be
taken with either an
under- or over-voltage
condition and how that
manager will operate in
sequencing the power-on
operation.
The
managers can act
independently or in
concert with any other
manager in the device.
When the managers work
together the device can
control the sequence in
which power is applied
to the application
circuits. Each manager
is assigned to a
sequence position which
allows the device to
perform power supply
sequencing in any order.
For power-off situations
the SMS64 can sequence
the supplies either in
the same order or
reverse order from the
power-on
sequence.
The
SMS64 has two
programmable Watchdog
timers, two programmable
reset outputs and a
programmable IRQ#
output. Using the
I2C 2-wire
serial interface, a host
system can communicate
with the SMS64 status
register, optionally
control power-on via
software and utilize 4
K-bits of nonvolatile
memory.
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NOTE
1 - This is a
Preliminary Information
data sheet that
describes a Summit
product currently in
pre-production with
limited
characterization.
SUMMIT Microelectronics,
Inc. reserves the right
to make changes to the
products contained in
this publication in
order to improve design,
performance or
reliability. SUMMIT
Microelectronics, Inc.
assumes no
responsibility for the
use of any circuits
described herein,
conveys no license under
any patent or other
right, and makes no
representation that the
circuits are free of
patent infringement.
Charts and schedules
contained herein reflect
representative operating
parameters, and may vary
depending upon a user's
specific application.
While the information in
this publication has
been carefully checked,
SUMMIT Microelectronics,
Inc. shall not be liable
for any damages arising
as a result of any error
or omission.
SUMMIT Microelectronics,
Inc. does not recommend
the use of any of its
products in life support
or aviation applications
where the failure or
malfunction of the
product can reasonably
be expected to cause any
failure of either system
or to significantly
affect their safety or
effectiveness. Products
are not authorized for
use in such applications
unless SUMMIT
Microelectronics, Inc.
receives written
assurances, to its
satisfaction, that: (a)
the risk of injury or
damage has been
minimized; (b) the user
assumes all such risks;
and (c) potential
liability of SUMMIT
Microelectronics, Inc.
is adequately protected
under the
circumstances.
Revision 2.22 - This
document supersedes all
previous versions.
Please check the Summit
Microelectronics, Inc.
web site at
www.summitmicro.com
for data sheet
updates.
I2C is a trademark of
Philips Corporation.
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