MIC6315-30D2U TR

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The MIC6315-30D2U TR is a single-chip integrated Power-on Reset (POR) Supervisors from Microchip Technology Incorporated. It is a highly integrated and robust solution that offers a wide range of features for applications requiring basic-level reset functions. It is designed to provide an integrated, low-cost, low-power solution for applications requiring both a power-on reset with an independent monitoring and latching of power supply voltage levels.

The MIC6315-30D2U TR is a part of the family of MIC6315 single-chip Power-on Reset Supervisors. It provides an improved Power-on Reset reliable, fast, secure, and error-free reset even under extreme system power conditions. This MIC6315-30D2U TR version works with a supply voltage of 3.3V, and has an operating temperature range of -40°C to +85°C.

The MIC6315-30D2U TR is a simple and all-in-one solution, as it has a Push-Button reset input, as well as a programmable reset period timer, an 8-bit prescaler, a hysteresis voltage monitor, a bandgap reference, and a regulator. It also comes with several features for detection and monitoring of various voltage levels and multiple power supply conditions. This ensures accurate detection of power-on and power-off conditions and allows for better performance and reliability in embedded systems.

In terms of its application field, the MIC6315-30D2U TR can be used in a wide range of consumer electronic, automotive and industrial applications where reliable, fast and secure Power-on Reset Supervision is required. It is most suitable for applications such as mobile phones, automotive audio, personal digital assistants, notebook PCs and other applications requiring accurate protection against voltage disturbances.

Working Principle

The MIC6315-30D2U TR works with a Push-Button reset input, a programmable reset period timer, an 8-bit prescaler, a hysteresis voltage monitor, a bandgap reference, and a regulator. When power from a host system is applied to the MIC6315-30D2U TR, the Push-Button reset is asserted directly to the microcontroller for a RESET pulse, independent of the system power supply. In this way, the MIC6315-30D2U TR ensures a reliable reset even under extreme system power conditions.

The MIC6315-30D2U TR contains a timer circuit, an 8-bit prescaler, a comparator and an adjustable voltage detector. The 8-bit prescaler divides the system clock by 256, producing a signal with a frequency of 2.5 kHz. This signal is supplied to the timer circuit, which generates a specified delay before it triggers the voltage detector. The voltage detector monitors the system voltage during the prescribed period then issues a reset signal when the voltage falls below a specified threshold value. This is a foolproof method for detecting power drop beyond the power-on threshold and resetting the system.

The MIC6315-30D2U TR also contains a Hysteresis Voltage Monitor (HVM) that provides a user-programmable threshold guard-band. The Hysteresis Voltage Monitor (HVM) detects the system power supply voltage and switches the voltage detectors between their respective high and low detection thresholds. This ensures that the MIC6315-30D2U TR always remains in a robust power-on state.

Finally, the MIC6315-30D2U TR employs a bandgap reference circuit to provide an accurate signal of the system’s supply voltage. This allows the MIC6315-30D2U to detect voltage drops outside its specified power-on threshold, providing a reliable and secure power-on reset.

The MIC6315-30D2U TR is an integrated and reliable, low-cost, low-power solution for applications requiring both a power-on reset with an independent monitoring and latching of power supply voltage levels. With an operating temperature range of -40°C to +85°C, the MIC6315-30D2U is suitable for a wide range of consumer electronics, automotive and industrial applications.

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