ADM8696 Microprocessor Supervisory Circuit

Power-On Reset output during power-up, power-down and brownout conditions. The RESET voltage threshold is adjustable using an external voltage divider. The RESET output remains operational with VCC as low as 1 V. A Reset pulse if the optional watchdog timer has not been toggled within specified time. Separate watchdog timeout and low line status outputs. Adjustable reset and watchdog timeout periods. A 1.3 V threshold detector for power fail warning, low battery detection or to monitor a power supply other than VCC. Battery backup switching for CMOS RAM, CMOS micro-processor or other low power logic (ADM8696). Write protection of CMOS RAM or EEPROM (ADM8697).

The ADM8696/ADM8697 supervisory circuits offer complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include µP reset, backup battery switchover, watchdog timer, CMOS RAM write protection and power failure warning.

The ADM8696/ADM8697 are available in 16-pin DIP and small outline packages (including TSSOP) and provide the following functions:

Features and Benefits
  • Upgrade for ADM696/ADM697
  • Specified Over Temperature
  • Adjustable Low Line Voltage Monitor
  • Power OK/Reset Time Delay
  • Reset Assertion Down to 1 V VCC
  • Watchdog Timer—100 ms, 1.6 s, or Adjustable
  • Low Switch On Resistance
  • 0.7 Ω Normal, 7 Ω in Backup
  • 400 nA Standby Current
  • Automatic Battery Backup Switching (ADM8696)
  • Fast On-Board Gating of Chip Enable Signals (ADM8697)
  • Voltage Monitor for Power Fail or Low Battery Warning
  • Also Available in TSSOP Package
  • Qualified for Automotive Applications
Power Management
Data Sheets
Documentnote
ADM8696/ADM8697: Microprocessor Supervisory Circuits Data Sheet (Rev. A)PDF 196 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADM8696ANZ Last Time Buy16 ld PDIPOTH 25-40 to 85C3.112.8Y
ADM8696ARW Last Time Buy16 ld SOIC - WideOTH 47-40 to 85C00N
ADM8696ARWZ Production16 ld SOIC - WideOTH 47-40 to 85C3.583.18Y
ADM8696ARWZ-REEL Production16 ld SOIC - WideREEL 1000-40 to 85C03.18Y
Reference Materials
ADM8696/ADM8697: Microprocessor Supervisory Circuits Data Sheet (Rev. A) adm8696
Supervisory Devices Complementary Parts Guide for Altera FPGAs adm690
Supervisory Devices Complementary Parts Guide for Xilinx FPGAs adm690
Voltage Monitoring Products Applications Guide adm6317