SP706REU-L Datasheet, PDF (1/16 Pages) Exar Corporation – 3.0V/3.3V Low Power Microprocessor Supervisory Circuits

June 2010
SP706R/S/T - SP708R/S/T
3.0V/3.3V Low Power Microprocessor Supervisory
Circuits
Rev. 2.0.0
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 V_CC=1V
• V_CC 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. [phone] – Fax. [phone]