MCP809中文资料低电平有效 3 引脚复位 IC数据手册TI规格书

描述 Description

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.

特性 Features

• Precise Monitoring of 3V, 3.3V, and 5V Supply Voltages
• 140ms min. Power-On Reset Pulse Width, 240ms Typical
•  Active-high RESET Output (MCP810)
• Specified RESET Output Valid for VCC≥1V
• Power supply transient immunity