FP6809

fitipower integrated technology lnc. FP6809/6810 3-Pin Microprocessor Reset Circuits Description The FP6809 and FP6810 are cost-effective system supervisory circuits which are designed to monitor micro-processor voltage and VCC in digital systems. They provide a reset signal to the host processor when necessary. These circuits assert a reset signal whenever the VCC supply voltage declines below a preset threshold. They keep reset signal asserted for at least 140ms after VCC has risen above the reset threshold. The FP6809-N has an open-drain output stage which requires a pull-up resistor while FP6809-C and FP6810-C have push-pull outputs. The FP6809 has an active-low output while the FP6810 has an active-high RESET output. The FP6809 and FP6810 are optimized to reject fast transient glitches on the VCC line. Low supply current makes these devices suitable for portable equipments. Features  Precision Monitoring of Power-Supply Voltage  140ms Guaranteed Minimum Reset Output Duration  Low Supply Current  VCC Transient Immunity  Small SOT-23-3 Package  No External Components  Guaranteed Reset Valid to VCC=1V  Available in Three Output Configurations Open-Drain Output (FP6809-N) Push-Pull Output (FP6809-C) Push-Pull RESET Output (FP6810-C)  RoHS Compliant Applications  Computer  Battery Powered Equipment  Microprocessor Power Supply Monitoring  Embedded System  Automotive Pin Assignments S3 Package (SOT-23-3) VCC 3 1 2 GND RESET (RESET) Figure 1. ...