DS1232LPSN-2/T&R

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PMIC - Supervisors are integrated circuits for monitoring and protecting microprocessors and digital systems. The DS1232LPSN-2/T&R is a low-power supervisor from Maxim Integrated that provides a precision reset and watchdog output. This enables system resilience to possible faults and ensures reliable operations, making it an ideal choice for embedded applications. This article discusses the application fields and working principles of the DS1232LPSN-2/T&R.

The DS1232LPSN-2/T&R\'s primary functions are to monitor the supply voltage and generate a system reset when power faults or operating conditions are not within expected limits. Its small size and low power consumption make it suitable for use in a variety of applications in both industrial and consumer electronic systems. These include home appliances, smart meters, electronic toys, gaming consoles, medical/personal health systems, automotive electronics, as well as environments where remote or isolated operation is essential. The device also provides manual reset control and can be used in applications with long reset times.

The DS1232LPSN-2/T&R incorporates a host of features that make it suitable for use in a variety of environments. It supports an adjustable power supply voltage range from 1.5V to 5.0V and temperature range from -40°C to +85°C. The device is also equipped with a manual reset input, allowing for system reset control during development and final test. The watchdog timer can also be configured to generate a reset sequence after a programmable delay. In addition, the device offers a configurable turn-on/turn-off delay of up to 1.3 seconds, allowing designers to properly shut down equipment before power is removed.

The DS1232LPSN-2/T&R employs an internal reset circuit which consists of a comparator and a voltage reference. The comparator compares the voltage at the voltage monitor input to a fixed internal voltage reference. If the voltage drops below a certain pre-defined threshold, a reset signal is generated. The device also incorporates a watchdog timer which can be activated by a periodic active logic pulse. When no active pulse is detected within the specified interval, a reset signal is generated. This reset signal is used to reset the system, ensuring that it operates within its intended parameters.

The DS1232LPSN-2/T&R also provides a manual reset input. When this input is asserted, the device will generate a reset signal which can be used to shutdown the system in order to perform maintenance or adjustments. This reset signal can be removed when the reset input is deasserted, allowing the system to resume operations once maintenance is complete.

The DS1232LPSN-2/T&R is a highly integrated device with power, reset and watchdog functions. Its small size and low power consumption make it ideal for a variety of embedded applications. It offers adjustable power supply voltage and temperature range, manual reset control, programmable reset delay, configurable slew rate and turn-on/turn-off delays, allowing for custom solutions to application-specific requirements. By monitoring supply voltage and generating a reset when power faults or operating conditions are outside of expected limits, the DS1232LPSN-2/T&R ensures system reliability and resilience, making it an ideal choice for embedded applications.

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