MIC705MY-TR

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The MIC705MY-TR from Micrel Inc. is a supervisory circuit designed for 3 V/5 V microprocessor systems, providing both system reset and microprocessor power-on reset functions. This highly versatile supervisor combines functions such as power up reset, long duration monitoring, brown-out reset and manual reset input in a single monolithic device.

The MIC705MY-TR is a 5 Pin SOT-23 package containing an on-chip reset device and three protection transistors along with a manual reset pin. Its reset output is active-low, meaning that during reset mode, the reset output will be pulled low in order to reset the microprocessor. This reset signal is active regardless of the input power supply voltage.

The MIC705MY-TR is designed to detect power changes in 3V/5V microprocessor systems, such as low voltage, brownout, and overvoltage conditions. It also detects the over temperature conditions of the device itself. When these events occur, the reset output quickly forces the microprocessor into reset mode, preventing incorrect operation and possible system damage. Additionally, it has an extended delay to detect system "Clock" failure due to lack of clock activity.

The MIC705MY-TR contains two sets of delay capacitor networks. The first sets the reset-timeout monitor, and the other sets the power-on reset delay. The reset-timeout monitor monitors the input voltage and resets the system when the input voltage drops below the reset threshold. This is useful for preventing incorrect operation if the input voltage drops below the microprocessor\'s working level. The second capacitor sets the power-on reset delay, which is useful in ensuring a stable reset during power cycles.

The MIC705MY-TR also features a built-in bleeder transistor, allowing an active-low manual reset input to reset the system or to force a reset upon system start up. The manual reset input can be pulled low to reset the system; when the manual reset is released, the MIC705MY-TR will begin the system reset sequence, ensuring a safe and stable rest.

The MIC705MY-TR is ideal for providing critical reset functionality in microprocessor-based systems. It is designed for CLPD, including PIC, AVR, ARM, M622XX, and many other popular microprocessor families. The MIC705MY-TR is a cost effective solution for providing system reset and microprocessor power-on reset in a small package.

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