SP690 SIPEX [Sipex Corporation], SP690 Datasheet
SP690
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SP690 Summary of contents
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... P and digital systems. The series will significantly improve system reliability and operational efficiency when compared to discrete solutions. The features of the SP690A/692A/802L/802M/805L/805M include a watchdog timer reset and backup-battery switchover, and power-failure warning, a complete P monitoring and watchdog solution. The series is ideal for applications in automotive systems, computers, controllers, and intelligent instruments. All designs where it is critical to monitor the power supply to the P and it’ ...
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... SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over to 0.3V) CC =4.50V to 5.50V for SP692A/SP802M/SP805M ...
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... NOTE 4: WDI is guaranteed intermediate, non-logic level state if WDI is floating and the operating voltage range. WDI is internally biased to 35 50K . NOTE 5: SP690A, SP692A, SP802L, and SP802M only. NOTE 6: SP805L and SP805M only. SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over =4.50V to 5.50V for SP692A/SP802M/SP805M, V BATT ...
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... WDI remains high or low longer than 1.6 seconds. RESET remains low for 200ms after V crosses the reset threshold CC voltage on power-up or after being trig- gered by WDI. SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over BATTERY-SWITCHOVER V BATT V CC 3.5V WDI OUT ...
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... V =0V,V =2.8V 100 CC BATT Sink Current 0 -60 - 120 150 Temperature Deg. C SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over o (25 C, unless otherwise noted) Battery Supply Current vs. Temperature (Backup Mode) 2.9 V =0V CC 2.4 V =2.8V BATT 1.9 1.4 0.9 0.4 -0.1 -40 - 100 120 140 -60 Temperature Deg ...
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... Figure 3A. SP690A RESET Output Voltage vs. Supply Voltage div 0V 5V RESET 0V 1sec/div Figure 4A. SP805L RESET Output Voltage vs. Supply Voltage SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over 1000 V BATT V CC Slope=5 100 100 1000 Figure 2. V BATT V CC ...
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... Figure 6A. SP805L RESET Response Time +1.3V PFI +1.2V PFO 5V 0V 500ns/div Figure 7A. Power-Fail Comparator Response Time (FALL) SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over V CC Figure 5B. Circuit for the SP690A/802L RESET Response Time GND Figure 6B. Circuit for the SP805 RESET ...
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... RESET* 0V +5V RESET** 0V +5V V OUT 0V +5V PFO PFI = 3.0V BATT Figure 9. Timing Diagram SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over BATT PFI +1.25V Figure 8B. Circuit for the Power-Fail Comparator Response Time (RISE) 3.0V 3.0V *SP690A/692A/802L/802M **SP805L/805M 8 + +5V ...
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... V CMOS CC RAM GND Figure 12. Typical Operating Circuit SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over THEORY OF OPERATION The SP690A/692A/802L/802M/805L/805M microprocessor ( P) supervisory circuits monitor the power supplied to digital circuits such as microprocessors, microcontrollers, or memory. The series is an ideal solution for portable, battery-powered equipment that requires power supply monitoring ...
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... T T Reset Threshold = 4.65V in SP690A/802L/805L Reset Threshold = 4.40V in SP692A/802M/805M Figure 13. BACKUP-BATTERY Switchover Block Diagram SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over Power-Fail Comparator down to 1V. The Power-Fail Comparator can be used under-voltage detector to signal the failing of a power supply (it is completely separate from the rest of the circuitry and does not need to be dedicated to this function) ...
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... Figure 15. Allowable BACKUP-BATTERY Voltages SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over BATT ...
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... V through the diode (D1 in Figure 13) OUT when V is close to the reset threshold. CC SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over Operation Without a Backup Power Source backup power source is not used, ground R 1 ...
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... P wants to pull it low, indeterminate logic levels may result. To correct this, connect a 4.7K resistor between the RESET output and the P reset I/ Figure 20. Buffer the RESET output to other system components. SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over Buffered RESET connects to System Components R 1 +5V V ...
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... E 0.300/0.325 (7.620/8.255) E1 0.240/0.280 (6.096/7.112) 0.115/0.150 L (2.921/3.810) 0°/ 15° Ø (0°/15°) SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over PACKAGE: PLASTIC 0.015" min. (0.381min 0.210" max. (5.334 max 14–PIN 16–PIN 0.115/0.195 ...
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... L 0.016/0.050 (0.406/1.270) Ø 0°/8° (0°/8°) SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over PACKAGE: PLASTIC SMALL OUTLINE (SOIC) (NARROW 45° 14–PIN 16–PIN 0.053/0.069 0.053/0.069 (1.346/1.748) (1 ...
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... Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others. SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over ORDERING INFORMATION Temperature Range ...