SP805S

® SP690T/S/R, SP802T/S/R, SP804T/S/R, and SP805T/S/R 3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over s RESET and RESET Outputs s Reset asserted down to VCC = 1V s Reset Time Delay - 200ms s Watchdog Timer - 1.6 sec timeout s 40µA Maximum VCC Supply Current s 1µA Maximum Battery Supply Current s Power Switching 50mA Output in VCC Mode (1.5Ω) 10mA Output in Battery Mode (15Ω) s Battery Can Exceed VCC in Normal Operation s Precision Voltage Monitor for Power-Fail or Low-Battery Warning s Available in 8 pin SO and DIP packages s Pin Compatible Upgrades to MAX690T/S/R, MAX802T/S/R, MAX804T/S/R, MAX805T/S/R DESCRIPTION The SP690T/S/R, SP802T/S/R, SP804T/S/R and SP805T/S/R devices are a family of microprocessor (µP) supervisory circuits that integrate a myriad of components involved in discrete solutions to monitor power-supply and battery-control functions in µP and digital systems. The series will significantly improve system reliability and operational efficiency when compared to discrete solutions. The features of the SP690T/S/R, SP802T/S/R, SP804T/S/R and SP805T/S/R devices include a watchdog timer, a µP reset and backupbattery switchover, and power-failure warning; a complete µP monitoring and watchdog solution. The series is ideal for 3.0V or 3.3V applications in portable electronics, computers, controllers, and intelligent instruments and is a solid match for designs where it is critical to monitor the power supply to the µP and it’s related digital...