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ADM8697:  µP SUPERVISOR WITH CHIP ENABLE SIGNALS, ADJUSTABLE LOW LINE VOLTAGE MONITOR, ADJUSTABLE WATCHDOG TIMER, LOW LINE, POWER FAIL AND WATCHDOG STATUS OUTPUTS, REDUCED POWER CONSUMPTION. UPGRADE FOR ADM697

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 ...More

ADM8697:  µP SUPERVISOR WITH CHIP ENABLE SIGNALS, ADJUSTABLE LOW LINE VOLTAGE MONITOR, ADJUSTABLE WATCHDOG TIMER, LOW LINE, POWER FAIL AND WATCHDOG STATUS OUTPUTS, REDUCED POWER CONSUMPTION. UPGRADE FOR ADM697

Product Description

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:

  1. 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.
  2. A Reset pulse if the optional watchdog timer has not been toggled within specified time.
  3. Separate watchdog timeout and low line status outputs.
  4. Adjustable reset and watchdog timeout periods.
  5. A 1.3 V threshold detector for power fail warning, low battery detection or to monitor a power supply other than VCC.
  6. Battery backup switching for CMOS RAM, CMOS micro-processor or other low power logic (ADM8696).
  7. Write protection of CMOS RAM or EEPROM (ADM8697).

RESOURCES & TOOLS

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  • Backup-Battery Switch: No
  • Batt-Backup-Flg: Yes
  • Chip Enable Gating: Yes
  • Package: DIP,SOIC,SOP
  • Reset Threshold (V): 1.3
  • Reset Output-Stage: Active-High/Push-Pull,Active-Low/Push-Pull
  • Min Reset Timeout (ms): 35 (Adjustable)
  • Typ Watchdog Timeout (ms): 100,1600,adj.

Functional Block Diagram for ADM8697

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*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.