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SP706S Datasheet Preview

SP706S Datasheet

3.0V/3.3V Low Power Microprocessor Supervisory Circuits

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April 2015
SP706R/S/T - SP708R/S/T
3.0V/3.3V Low Power Microprocessor Supervisory
Circuits
Rev. 3.0.0
GENERAL DESCRIPTION
The SP706R/S/T and SP708R/S/T series is a
family of microprocessor (µP) supervisory
circuits that integrate myriad components
involved in discrete solutions which monitor
power-supply and battery in µP and digital
systems.
The SP706R/S/T and SP708R/S/T series will
significantly improve system reliability and
operational efficiency when compared to
solutions obtained with discrete components.
The features of the SP706R/S/T and
SP708R/S/T series include a watchdog timer, a
µP reset, a Power Fail Comparator, and a
manual-reset input.
The SP706R/S/T and SP708R/S/T series is ideal
for 3.0V or 3.3V applications in automotive
systems, computers, controllers, and intelligent
instruments. The SP706R/S/T and SP708R/S/T
series is an ideal solution for systems in which
critical monitoring of the power supply to the µP
and related digital components is demanded.
APPLICATIONS
Processors & DSPs Based Systems
Industrial & Medical Instruments
FEATURES
Precision Low Voltage Monitor
SP706R/SP708R: +2.63V
SP706S/SP708S: +2.93V
SP706T/SP708T: +3.08V
200ms RESET Pulse Width
SP706R/S/T: Active Low
SP708R/S/T: Active High and Active Low
Independent Watchdog Timer
1.6s Timeout (SP706R/S/T)
Enable/Disable Function
40µA Maximum Supply Current
Debounced TTL/CMOS Manual Reset
Input
RESET Asserted Down to VCC=1V
VCC Glitch Immunity
Voltage Monitor for Power Failure or
Low Battery Warning
8-Pin NSOIC and MSOP Packages
Pin Compatible with Industry
Standards 706R/S/T and 708R/S/T
Part Number
SP706R
SP706S
SP706T
SP708R
SP708S
SP708T
RESET Threshold
2.63V
2.93V
3.08V
2.63V
2.93V
3.08V
RESET Active
Low
Low
Low
Low and High
Low and High
Low and High
Manual RESET
Yes
Yes
Yes
Yes
Yes
Yes
Watchdog
Yes
Yes
Yes
No
No
No
PFI Accuracy
4%
4%
4%
4%
4%
4%
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001




Exar

SP706S Datasheet Preview

SP706S Datasheet

3.0V/3.3V Low Power Microprocessor Supervisory Circuits

No Preview Available !

SP706R/S/T - SP708R/S/T
3.0V/3.3V Low Power Microprocessor Supervisory
Circuits
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum rating
conditions for extended periods of time may affect
reliability.
VCC .......................................................... -0.3V to 6.0V
All Other Inputs (Note 1) ...................-0.3V to (VCC+0.3V)
Input Current
VCC .................................................................20mA
GND ................................................................20mA
Output Current (All outputs) ...............................20mA
ESD Rating (HBM - Human Body Model) .................... 2kV
Continuous Power Dissipation
SO (derate 5.88mW/°C above +70°C)...............471mW
Mini SO (derate 4.10mW/°C above +70°C) ........330mW
Storage Temperature ..............................-65°C to 160°C
Lead Temperature (Soldering, 10 sec) ....................300°C
ELECTRICAL SPECIFICATIONS
Unless otherwise indicated, VCC = 2.7V to 5.5V (SP70xR), VCC = 3.15V to 5.5V (SP70xS), VCC = 3.0V to 5.5V (SP70xT), TA=
TMIN to TMAX, typical at 25°C.
Parameter
Operating Voltage Range VCC
Supply Current ISUPPLY
Reset Threshold
Reset Threshold Hysteresis
Reset Pulse Width tRS
RESET Output Voltage
VOH
VOL
VOH
VOL
RESET Output Voltage
VOH
VOL
VOH
VOL
Watchdog Timeout Period tWD
WDI Pulse Width tWP (note 1)
WDI Input Threshold
VIL
VIH
VIL
VIH
WDI Input Current
WDO Output Voltage
VIL
VIH
VIL
© 2015 Exar Corporation
Min.
1.0
2.55
2.85
3.00
140
Typ.
25
40
2.63
2.93
3.08
20
200
0.8xVCC
VCC-1.5
VCC-0.6
VCC-1.5
1.00
50
1.60
0.7xVCC
3.5
-1 0.02
0.8xVCC
VCC-1.5
Max.
5.5
40
80
2.70
3.00
3.15
280
Units
V
µA
µA
V
mV
ms
0.3 V
0.4
0.3
0.4
2.25
0.6
0.8
1
0.3
V
s
ns
V
µA
V
2/17
Conditions
MR=VCC or floating, WDI floating,
VCC = 3.3V
MR=VCC or floating, VCC = 5.5V
SP706R. SP708R
SP706S. SP708S
SP706T. SP708T
Note 2
Note 2
VRST(MAX)<VCC<3.6V, ISOURCE=500µA
VRST(MAX)<VCC<3.6V, ISINK=1.2mA
4.5V<VCC<5.5V, ISOURCE=800µA
4.5V<VCC<5.5V, ISINK=3.2mA
VRST(MAX)<VCC<3.6V, ISOURCE=215µA
VRST(MAX)<VCC<3.6V, ISOURCE=1.2mA
4.5V<VCC<5.5V, ISOURCE=800µA
4.5V<VCC<5.5V, ISOURCE=3.2mA
VCC<3.6V
VIL=0.4V, VIH=0.8xVCC
VRST(MAX)<VCC<3.6V
VRST(MAX)<VCC<3.6V
VCC=5V
VCC=5V
WDI=0V or WDI=VCC
VRST(MAX)<VCC<3.6V, ISOURCE=500µA
VRST(MAX)<VCC<3.6V, ISINK=1.2mA
4.5V<VCC<5.5V, ISOURCE=800µA
Rev. 3.0.0


Part Number SP706S
Description 3.0V/3.3V Low Power Microprocessor Supervisory Circuits
Maker Exar
Total Page 17 Pages
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