The MCP809/810 microprocessor supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.
The function of the MCP809/810 is to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240ms after VCC rises above the threshold. The MCP809 has an active-low RESET output, while the MCP810 has an active-high RESET output.
Seven standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 3V supply voltages.
With a low supply current of only 15µA, the MCP809/810 are ideal for use in portable equipment. The MCP809/MCP810 are available in the 3-pin SOT23 package.
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|Part number||Order||Threshold voltage 1 (Typ) (V)||Number of supplies monitored||VCC (Max) (V)||VCC (Min) (V)||Output driver type/reset output||Time delay (ms)||Features||Rating||Operating temperature range (C)||Watchdog timer WDI (sec)|
|240||Ease-of-use||Catalog||-40 to 105||None|