S-80959CLPF-G7VTFU

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The S-80959CLPF-G7VTFU is a low-voltage supervisor in a TSOPJW-14 lead package that requires only 0.45 μA of operating current. It offers independent settings for two supply voltage monitor thresholds and two reset thresholds. The S-80959CLPF-G7VTFU has an independent watchdog timer and offers an optional manual reset input, which can be used to implement a push-button reset. It has an open drain active high reset output, which remains asserted as long as Vcc voltage is below the reset threshold levels. This reset output can be used to assert a reset signal to system controllers.

Application Fields and Working Principle

The S-80959CLPF-G7VTFU is used in digital systems and control circuitry, mainly to maintain system reliability by providing reset protection. It is capable of monitoring two supply voltages independently, with reset thresholds set at 65% and 85% of the nominal Vcc voltage. The device can generate a reset and/or an interrupt signal when these thresholds are crossed. Additionally, it has a watchdog timer and an optional manual reset input.

The S-80959CLPF-G7VTFU consists of two voltage detectors, two watchdogs, two reset generators, and a manual reset circuit. The two comparators are used to detect the Vcc supply voltage and alert the watchdog circuit when it falls below a certain threshold. If the voltage stays below the threshold for longer than a preset timeout period, the watchdog circuit will then assert the reset output, and if a manual reset input is connected, the manual reset button can also be used to assert the reset output. The two reset generators then use timers to generate reset and/or interrupt signals.

The S-80959CLPF-G7VTFU provides a high level of accuracy and stability even under extreme operating conditions. It has a wide range of operating temperature from -40°C to +85°C, low-power consumption, high reliability with fewer external components, and an integrated circuit design for easy installation and maintenance. The reset thresholds are set at 65% and 85% of the nominal Vcc voltage and can be adjusted externally by setting resistors at the appropriate values.

Furthermore, the S-80959CLPF-G7VTFU has a suite of optional features, such as an adjustable active-high reset output, which can be used to drive a high-impedance reset signal to the processor, a complementary shutdown function to disable the device when the system is placed in a low-power state, and an active-low manual reset input for push-button reset emergency reset. It also provides an externally adjustable watchdog timer, which can be set from 0.5ms to 8192ms for system protection and improved system reliability.

The S-80959CLPF-G7VTFU is an ideal solution for many applications where reliable reset protection is needed and offers flexibility and robustness in design. Its low-power consumption, wide operating temperature range, and adjustable reset and watchdog thresholds make it an ideal device for many embedded designs.

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