Description

The SP706PCN is a microprocessor supervisory circuit designed to monitor power-supply, battery, and digital systems in µP. It is part of the SP706P/S/R/T, SP708R/S/T series and offers significant improvements in system reliability and operational efficiency when compared to discrete components.

Specifications and features

• Precision Low Voltage Monitor: The SP706PCN has a low voltage monitor of +2.63V (for SP706P/R), +2.93V (for SP706S), and +3.08V (for SP706T and SP708T).
• RESET Pulse Width: The device has a reset pulse width of 200ms.
• Independent Watchdog Timer: The SP706PCN has a built-in watchdog timer that can be set to 1.6 seconds (for SP706P/S/R/T).
• Low Supply Current: The device has a low maximum supply current of 40µA.
• Debounced TTL/CMOS Manual-Reset Input: The SP706PCN has a debounced manual-reset input for TTL/CMOS.
• RESET Asserted Down to VCC = 1V: The reset output is active-high for SP706P and active-low for SP706R/S/T and SP708R/S/T.
• WDI Can Be Left Floating: The device allows for the WDI to be left floating, disabling the watchdog function.
• Built-In Vcc Glitch Immunity: The SP706PCN has built-in Vcc glitch immunity.
• Voltage Monitor: The device has a voltage monitor for power failure or low battery warning.
• Package Options: The SP706PCN is available in 8-pin PDIP, NSOIC, and µSOIC packages.
• Pin Compatible Enhancement: The device is pin compatible with industry standards 706P/R/S/T and 708R/S/T.

Application Scenarios

The SP706PCN is commonly used in microprocessor and digital systems as a supervisory circuit to monitor power-supply and battery for improved system reliability and efficiency.

Comparison

• Significantly improves system reliability and operational efficiency compared to results obtained with discrete solutions
• Pin compatible with industry standards 706P/R/S/T and 708R/S/T
• Low supply current
• Integrated components reduce the need for additional discrete solutions

• Not suitable for applications that require a high voltage monitor