SP707 EXAR [Exar Corporation], SP707 Datasheet
SP707
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SP707 Summary of contents
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... The SP705-708/813L series is an ideal solution for systems in which critical monitoring of the power supply to the P and related digital components is demanded. Part RESET Number Threshold SP705 4.65 V SP706 4.40 V SP707 4.65 V LOW and HIGH SP708 4.40 V LOW and HIGH SP813L 4.65 V June 2008 Rev C = 1.1V CC ...
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ABSOLUTE MAXIMUM RATINGS This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions ...
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... Note 1: The input voltage limits on PFI and MR can be exceeded if the input current is less than 10mA. Note 2: Applies to both RESET in the SP705-SP708 and RESET in the SP707/708/813L/813M. DIP and SOIC WDO RESET / RESET* CC ...
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... WDI PFI Figure 2. Internal Block Diagram for the SP705/706/813L PFI Figure 3. Internal Block Diagram for the SP707/708 June 2008 Rev C WATCHDOG WATCHDOG TRANSITION TIMER DETECTOR V CC TIMEBASE FOR RESET AND 250 A WATCHDOG RESET GENERATOR 4.65V (4.40V for the SP706 and SP813M) SP705 1 ...
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Figure 4A. Power-Fail Comparator De-assertion Response Time. Figure 5A. Power-Fail Comparator Assertion Response Time. Figure 6A. SP705/707 RESET Output Voltage vs. Supply Voltage. June 2008 Rev C +5V PFI +1.25V Figure 4B. Circuit for the Power-Fail Comparator De- assertion Response ...
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... Figure 7A. SP705/707 RESET Response Time Figure 8. SP707 RESET and RESET Assertion Figure 10. Circuit for the SP707 RESET and RESET Assertion and De-Assertion June 2008 Rev GND Figure 7B. Circuit for the SP705/707 RESET Response Time Figure 9. SP707 RESET and RESET De-Assertion ...
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... Figure 11. SP707/708/813L RESET Output Voltage vs. Supply Voltage V CC GND Figure 13. Circuit for the SP707/708/813L RESET Output Voltage vs. Supply Voltage and the SP813L RESET Response Time June 2008 Rev C Figure 12. SP813L RESET Response Time V CC RESET 330pF SP705 Low Power Microprocessor Supervisory Circuits ...
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... An active-LOW manual-reset that allows RESET to be triggered by a pushbutton switch. The SP707/708 devices are the same as the SP705/706 devices except for the active-HIGH RESET substitution of the watchdog timer. The SP813L is the same as the SP705 except an active-HIGH RESET is provided rather than an active-LOW RESET ...
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... CC 0V +5V WDO 0V +5V RESET 0V +5V MR* 0V Figure 15. SP705/706 Timing Diagrams with WDI Tri-stated. The SP707/708/813L RESET Output is the Inverse of the RESET Waveform Shown. June 2008 Rev externally triggered LOW by MR, RESET is for the SP813L only If WDI is left unconnected, WDO can be used as a low-line output ...
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Power-Fail Comparator The power-fail comparator can be used for various purposes because its output and noninverting input are not internally connected. The inverting input is internally connected to a 1.25V reference. To build an early-warning circuit for power failure, connect ...
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RESET can be used to monitor voltages other than the +5V V line. Connect PFO initiate a RESET pulse when PFI drops below 1.25V. Figure 17 shows the ...
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Centigrade Temperature Figure 20. Supply Current vs. Temperature Applications The SP705-708/813L series offers unmatched performance and the lowest power consumption for these industry standard devices. Refer to ...
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June 2008 Rev C SP705 Low Power Microprocessor Supervisory Circuits 15 © 2008 Exar Corporation ...
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June 2008 Rev C SP705 Low Power Microprocessor Supervisory Circuits 16 © 2008 Exar Corporation ...
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June 2008 Rev C SP705 Low Power Microprocessor Supervisory Circuits 17 © 2008 Exar Corporation ...
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... SP707CP .....................................................................................DISCONTINUED SP707CN ....................................................................................... +70 C ..................................................................... 8–pin Narrow SOIC SP707CU ....................................................................................... +70 C ................................................................................. 8-pin SOIC SP707EP ......................................................................................DISCONTINUED SP707EN ..................................................................................... - +85 C ................................................................... 8–pin Narrow SOIC SP707EU ..................................................................................... - +85 C ............................................................................... 8-pin SOIC SP708CP .....................................................................................DISCONTINUED SP708CN ....................................................................................... +70 C ..................................................................... 8–pin Narrow SOIC SP708CU ....................................................................................... +70 C ................................................................................. 8-pin SOIC SP708EP ......................................................................................DISCONTINUED SP708EN ..................................................................................... - +85 C ................................................................... 8– ...