The SP708SCN-L/TR is a supervisor circuit manufactured by Exar Corporation. It monitors voltage levels in digital systems and provides a reset signal to the microcontroller or microprocessor when the voltage falls below a certain threshold, preventing erratic behavior and data corruption. This device is commonly used to improve the reliability of embedded systems.

Applications

• Microprocessor monitoring
• Microcontroller monitoring
• Embedded systems
• Critical voltage monitoring
• Portable instrumentation
• Industrial control systems

Features

• Precision voltage monitoring
• Reset output active low
• Internal watchdog timer
• Manual reset input
• Low supply current
• Small package size

Benefits

• Prevents system malfunctions caused by voltage drops.
• Improves system reliability by ensuring proper power-up and power-down sequences.
• Simplifies system design by providing a complete voltage monitoring solution.
• Conserves power due to low supply current.
• Space-saving with the small package.

Additional Details

The SP708SCN-L/TR includes a watchdog timer that monitors the activity of the microcontroller or microprocessor. If the device fails to send a periodic signal to the supervisor, the watchdog timer will trigger a reset. This helps to recover the system from software errors and lockups. The manual reset input allows for external reset triggering. The reset threshold voltage and reset timeout period are important parameters to consider for specific application requirements. This device operates over a wide temperature range and is available in a surface-mount package for automated assembly. The reset output is typically an open-drain output, requiring a pull-up resistor.