Description
1 TC70/71 MICROMASTERâ„¢ * 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
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