MIC803-30D3VC3-TR

The MIC803-30D3VC3-TR is a low power, small body 3.3V system supervisor device integrated in a tiny 8-lead USP-8 package. It is used to monitor the voltage and reset conditions of the microprocessor or logic system. This supervisor provides power-on reset (POR), reset delay time (user programmable), manual reset (MR), low voltage monitor (LVR), watchdog timer (WDT) and micropower holding (MPH) functions, making it ideal for storing system configuration or protecting the contents of low-power memory. The MIC803-30D3VC3-TR can also be used to detect brownouts on 3-0V analog and digital systems.

Application Field

The MIC803-30D3VC3-TR is suitable for use in a large number of industries, such as industrial automation, medical technology, building automation, automotive, robotics, and so on. It can be used for applications where system reset and emergency shutdown are necessary. Examples include remote control, power supply and system initialization, smoke and temperature alarms. In addition, this supervisor is frequently used in Internet of Things (IoT) devices and other machinery.

Features

The MIC803-30D3VC3-TR has numerous useful features, including a wide working range (-25°C to +85°C), low voltage monitor threshold programmable range of 0.9V to 2.5V, and a new calibration algorithm to ensure accurate operation. Its maximum time delay range is 8 seconds, after which the reset signal is activated. With the LVR feature, the device monitors the supply voltage (VCC). It can detect 0.9V to 2.5V of VCC power supply voltage and reset if the voltage drops below this range. In addition, the MIC803-30D3VC3-TR can be disabled by setting the manual reset input (MR) low.

Working Principle

The MIC803-30D3VC3-TR is an 8-pin mini universal serial bus system supervisor that helps monitor the voltage and reset conditions of a microprocessor or logic system. The voltage supervisor is designed for 3.3V systems. It can be used for applications where system reset and emergency shutdown are necessary. The device can be powered via USP (Universal Serial Bus Power) and works from its internal oscillator, so no external clock is required. The oscillator frequency is factory preset to 32.768kHz.

The MIC803-30D3VC3-TR includes a power-on reset (POR) circuit, reset time delay circuit, low voltage monitor (LVR) circuit, and a watch dog timer (WDT) circuit. When the system power is powered up, the POR circuit sends a signal to reset the system, while the reset time delay circuit can be programmed to provide a counter-based reset when needed. The LVR circuit monitors the power supply voltage and will reset the system when the voltage falls below the user-programmed LVR level. The WDT circuit can be used for system control and help prevent system hangs or abnormal operations.

The MIC803-30D3VC3-TR also has a micropower holding (MPH) function. This feature allows the reset signal to remain active for a preset period of time, even after power down, and is especially useful for saving system configuration data or protecting the contents of low-power memory.

Conclusion

The MIC803-30D3VC3-TR is a universal serial bus system supervisor designed for 3.3V systems. It features a power-on reset (POR) circuit, reset time delay circuit, low voltage monitor (LVR) circuit, and a watch dog timer (WDT) circuit, as well as a micropower holding (MPH) capability. The MIC803-30D3VC3-TR is suitable for a wide range of industries and applications including remote control, power supply and system initialization, and smoke and temperature alarms, making it a useful and versatile supporter for many different types of 3.3V systems.