MAX806TCSA Maxim Integrated Products, MAX806TCSA Datasheet
MAX806TCSA
Available stocks
Related parts for MAX806TCSA
MAX806TCSA Summary of contents
Page 1
... GND MAX805T/S/R 4 PFI MAX806T/S/R DIP/ ARE FOR MAX804T/S/R, MAX805T/S/R < > ARE FOR MAX704T/S/R, MAX806T/S/R ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ____________________________Features – — — — — ...
Page 2
Microprocessor Supervisory Circuits ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) V .........................................................................-0.3V to 6.0V CC VBATT ....................................................................-0.3V to 6.0V All Other Inputs ...................-0.3V to the higher of V Continuous Input Current V ..................................................................................100mA CC VBATT ...............................................................................18mA GND ...
Page 3
Microprocessor Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued 3.17V to 5.5V for the MAX690T/MAX704T/MAX80_T 5.5V for the MAX690R/MAX704R/MAX80_R; VBATT = 3.6V; T PARAMETER SYMBOL V in Battery-Backup Mode OUT Battery Switch Threshold, V Falling CC Battery Switch ...
Page 4
Microprocessor Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued 3.17V to 5.5V for the MAX690T/MAX704T/MAX80_T 5.5V for the MAX690R/MAX704R/MAX80_R; VBATT = 3.6V; T PARAMETER SYMBOL PFI Input Threshold V PFT PFI Input Current PFI Hysteresis, PFI Rising V ...
Page 5
Microprocessor Supervisory Circuits __________________________________________Typical Operating Characteristics (T = +25°C, unless otherwise noted -to-V ON-RESISTANCE CC OUT vs. TEMPERATURE 5 VBATT = ...
Page 6
Microprocessor Supervisory Circuits ______________________________________________________________Pin Description PIN MAX690 MAX704 MAX804 NAME MAX802 MAX806 MAX805 OUT GND PFI – — — – ...
Page 7
Microprocessor Supervisory Circuits V BATT BATTERY SWITCHOVER CIRCUITRY V CC BATTERY SWITCHOVER COMPARATOR 1.237V RESET COMPARATOR 1.237V * * WATCHDOG WDI TIMER ** MR PFI POWER-FAIL COMPARATOR V PFT * MAX690T/S/R, MAX802T/S/R, MAX804T/S/R, MAX805T/S/R ONLY ** MAX704T/S/R, MAX806T/S/R ONLY ...
Page 8
Microprocessor Supervisory Circuits Backup-Battery Switchover In the event of a brownout or power failure, it may be necessary to preserve the contents of RAM. With a backup battery installed at VBATT, the devices auto- matically switch RAM to backup ...
Page 9
Microprocessor Supervisory Circuits 3.0V OR 3.3V MAX690T/S MAX704T/S/R MAX802T/S/R 1N4148 MAX804T/S/R MAX805T/S/R VBATT MAX806T/S/R (RESET) 0.47F GND ARE FOR MAX804T/S/R, MAX805T/S/R ONLY Figure 3. Using a SuperCap as a Backup Power Source Connecting an ...
Page 10
Microprocessor Supervisory Circuits MAX690T/S/R PFI MAX704T/S/R MAX802T/S MAX804T/S/R MAX805T/S/R MAX806T/S/R C1* PFO TO μP PFO TRIP ( ...
Page 11
Microprocessor Supervisory Circuits BUFFERED RESET TO OTHER SYSTEM COMPONENTS V CC MAX690T/S/R 4.7kΩ MAX704T/S/R RESET MAX802T/S/R MAX806T/S/R GND Figure 6. Interfacing to µPs with Bidirectional Reset I/O 100 100 RESET COMPARATOR OVERDRIVE (V ...
Page 12
... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 2005 Maxim Integrated Products ___________________Chip Topography ...