XC6121C317MR-G

Supervisors Overview

The XC6121C317MR-G is a high-precision voltage detector with watchdog function and ON/OFF control from Torex Semiconductor. It operates within a supply voltage range of 1.0V to 6.0V and features a fixed detection threshold of 1.7V, set in 100mV increments via laser trimming. The device incorporates CMOS technology for low current consumption, typically 5μA static current. It includes an N-channel open-drain output that goes low upon detection. The IC supports six selectable watchdog timeout periods ranging from 50ms to 1.6s and five release delay time settings from 3.13ms to 400ms. It functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer with selectable timeout periods for microprocessor monitoring
• Built-in delay circuit eliminates the need for external components for release delay
• EN/ENB pin allows independent control over the watchdog function while maintaining voltage detection
• High-precision detection voltage established through internal laser trimming technology

Supervisors Applications

• Microprocessor watchdog monitoring and reset circuits
• Memory battery backup circuits
• System power-on reset circuits
• Power failure detection

Supervisors Procurement Notes

Verify the specific suffix 'MR' indicates the SOT-25-5 package configuration. Confirm the 'C' designation aligns with the required detection voltage tolerance specifications. Ensure the part number matches the exact 1.7V threshold requirement for the target application design. Cross-reference the RoHS compliance status with current manufacturing standards.

Supervisors Selection Notes

Select this component when a fixed 1.7V threshold is required for system supervision. Consider the integrated watchdog feature if processor reset reliability is critical. Evaluate the low static current consumption for battery-powered applications. Verify that the N-channel open-drain output interface is compatible with the downstream logic levels.

Supervisors Part Context

This part belongs to the XC6121 series, which groups high-precision, low-current voltage detectors with watchdog functions. The series utilizes CMOS process technology and includes reference voltage sources, delay circuits, comparators, and output drivers. It is designed to provide reliable power management without requiring extensive external support components.

Supervisors Replacement Considerations

XC6121C317MRG

Supervisors FAQ

How is the watchdog function controlled?

The EN/ENB pin controls the ON/OFF state of the watchdog function. Setting this pin to a low or high level can disable the watchdog while allowing the voltage detector to continue operating.

What is the output behavior during detection?

The output type is VDFL low when the detected voltage falls below the threshold. The output configuration is an N-channel open drain.