TC70

1 TC70/71 MICROMASTER™ – SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP 2 FEATURES s Maximum Functional Integration: Precision Power Supply Monitor, Watchdog Timer, External RESET Override, Threshold Detector and Battery Backup Controller in an 8-Pin Package s Generates Power-on RESET and Guards Against Unstable Processor Operation Resulting from Power "Brown-out" s Automatically Halts and Restarts an Out-ofControl Microprocessor s Output Can be Wire-ORed, or Hooked to Manual RESET Pushbutton Switch s Watchdog Disable Pin for Easier Prototyping (TC70) s Voltage Monitor for Power Fail or Low Battery Warning (TC71) s Available in 8-Pin Plastic DIP or 8-Pin SOIC Packages s Cost Effective TYPICAL APPLICATIONS s All Microprocessor-based Systems s Test Equipment s Instrumentation s Set-Top Boxes FUNCTIONAL BLOCK DIAGRAM VCC CEI (TC70) VBATT BATTERY BACK-UP CONTROL VCCO CEO (TC70) PF (TC71) WDD (TC70) GND TDI (TC71) WATCHDOG TIMER VREF1 ∆V DETECTOR V...