Analog Devices ADM800M
The ADM691A/ADM693A/ADM800L/ADM800M family of supervisory circuits offers 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 family of products provides an upgrade for the MAX691A/93A/800M family of products.FEATURES
Low Power Consumption: Precision Voltage Monitor ؎2% Tolerance on ADM800L/M Reset Time Delay—200 ms, or Adjustable 1● A Standby Current Automatic Battery Backup Power Switching Fast Onboard Gating of Chip Enable Signals Also Available in TSSOP Package (ADM691A)
APPLICATIONS
Microprocessor Systems Computers Controllers Intelligent Instruments Automotive Systems Critical●P Power Monitoring Microprocessor Supervisory Circuits ADM691A/ADM693A/ADM800L/M FUNCTIONAL BLOCK DIAGRAM BATT ON 4.65V1 VCC VOUT VBATT CHIP ENABLE OUTPUT CONTROL CEIN CEOUT LOW LINE OSC IN OSC SEL RESET & WATCHDOG TIMEBASE RESET & GENERATOR RESET RESET WATCHDOG INPUT (WDI) WATCHDOG TRANSITION DETECTOR WATCHDOG TIMER WATCHDOG OUTPUT (WDO) POWER FAIL OUTPUT (PFO)
GENERAL DESCRIPTION
POWER FAIL INPUT (PFI) 1.25V All parts are available in 16-pin DIP and SO packages. The ADM691A is also available in a space-saving TSSOP package. The following functionality is provided: 1. Power-on reset output during power-up, power-down and brownout conditions.