BU4311FVE-TR

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The BU4311FVE-TR Supervisory Circuit is a versatile, low-power circuit designed to provide fail-safe protection for microprocessor based equipment. It is commonly used in data storage systems, personal computers and other electronic devices that use microprocessors. The BU4311FVE-TR is designed to monitor for system resets, errors and various other faults that can occur due to low power or voltage. It also monitors the status of external memory devices which can be used to detect and report problems.

The BU4311FVE-TR Supervisory Circuit integrates a voltage detector, reset timer, voltage supervisor and reset controller in a single, low-power IC. It has both active-high and active-low outputs, which can be used to control the reset signal or control a power-on reset. The BU4311FVE-TR is designed to enable safe shut down of applications when the system enters an undesired state.

The BU4311FVE-TR voltage detector has a wide input voltage range from 2.6V to 5.5V. It can detect a power fault condition on power-up, power-down or during normal operation. The reset signal is generated when the voltage falls below the applied threshold voltage. The reset pulse will remain active for a specified amount of time, allowing the system to transition cleanly from one state to another.

The reset timer used in the BU4311FVE-TR can be programmed to generate a pulse of different widths. The timer can be used to reset the system automatically if there is a failure in the primary power supply or when the processor encounters an illegal instruction or lock-up. The reset pulse width is user-programmable and can be adjusted to suit the application.

The voltage supervisor monitors the input voltage levels to ensure that they remain within a safe operating range. It can detect both overvoltage and undervoltage conditions. In the event of an overvoltage, it will latch the output voltage once it exceeds the overvoltage threshold. Similarly, when the voltage falls below the undervoltage threshold, the output will be latched. The supervisor has a programmable trip point to detect both overvoltage and undervoltage conditions.

The reset controller provides an output signal which is used to control the reset signal. It can be used to disable the reset signal when the processor is idle or when it has completed its routine tasks. The reset controller also has a programmable open-drain or push-pull output.

The BU4311FVE-TR is a highly integrated, low-power circuit that is used to protect microprocessor systems from overvoltage, undervoltage and reset conditions. Its voltage detector and supervisor detect overvoltage and undervoltage conditions and the reset timer can be programmed to generate a pulse of different widths. The reset controller can be used to disable the reset signal when the processor is idle or when it has completed its tasks. All these features make the BU4311FVE-TR a powerful tool for protecting microprocessor based systems.

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