3/3.3/4.0V µP Supervisor Circuits
●– Low supply current
●– Watchdog timer
●– Brownout detection
●The IMP706P/R/S/T/J and IMP708R/S/T/J CMOS supervisor circuits monitor power-supply and battery voltage level, and µP/µC operation. A reset is generated when the supply drops below 2.63V (IMP706P/R, IMP708R), 2.93V (IMP706S, IMP708S), 3.08V (IMP706T, IMP708T) or 4.00 (IMP706J, IMP708J).
●The family offers several functional options. Each device generates a reset signal during power-up, power-down and during brownout conditions.
●Key Features
●◆ Lower power, pin compatible replacements for Maxim MAX706P/R/S/T, MAX708R/S/T
● – 30% lower supply current:140µA vs. 200µA
●◆ Precision power supply monitor
● – 2.63V threshold (IMP706P/R, IMP708R)
● – 2.93V threshold (IMP706S, IMP708S)
● – 3.08V threshold (IMP706T, IMP708T)
● – New 4.00V threshold (IMP706J, IMP708J)
●◆ Debounced manual reset input
●◆ Auxiliary voltage monitor comparator
● – 1.25V threshold
● – Battery monitor/auxiliary supply monitor
●◆ Watchdog timer (IMP706P/R/S/T/J)
● – Watchdog can be disabled by floating WDI
●◆ 200ms reset time delay
●◆ Three reset signal options
● – Active HIGH: IMP706P
● – Active LOW: IMP706R/S/T/J
● – Active HIGH & LOW outputs: IMP708R/S/T/J
●◆ DIP, SO and MicroSO packages
●◆ Guaranteed RESET assertion to VCC = 1.1V
●Applications
●◆ Computers and controllers
●◆ CTI applications
●◆ Embedded controllers
●◆ Battery operated systems
●◆ Intelligent instruments
●◆ Wireless communication systems
●◆ PDAs and handheld equipment
