XC6121F648ER-G

Supervisors Overview

The XC6121F648ER-G is a high-precision voltage detector with an integrated watchdog timer manufactured by Torex Semiconductor. It utilizes CMOS process technology to provide low current consumption and high accuracy. The device monitors a single voltage threshold, internally fixed at 4.8V for this specific suffix, within a supply voltage range of 1.6V to 5.0V. It features an N-channel open-drain output that goes low upon detection. The watchdog function allows for timeout periods ranging from 50ms to 1.6s, with release delay times between 3.13ms and 400ms. An EN/ENB pin enables control over the watchdog function while keeping the voltage detector active. The component operates within a temperature range of -40°C to +85°C and is housed in a compact 6-USP (1.8x2) surface-mount package.

Supervisors Feature Summary

• Integrates a high-precision voltage detector with a built-in watchdog timer using CMOS technology
• Features an N-channel open-drain output configuration for reset signal generation
• Includes an EN/ENB pin to selectively disable the watchdog function while maintaining voltage monitoring
• Utilizes laser trimming technology for internally fixed detect voltages with high accuracy

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 complete ordering part number matches the required detect voltage threshold and package type. Confirm that the 6-USP package dimensions align with the PCB footprint design. Ensure the operating voltage range covers the system's minimum and maximum supply levels. Check that the watchdog timeout period meets the application's timing requirements. Validate thermal performance within the specified -40°C to +85°C range for the intended environment.

Supervisors Selection Notes

Select this component when a combined voltage supervision and watchdog function is required in a small form factor. The internal pull-up or pull-down on the EN/ENB pin simplifies circuit design by allowing the pin to remain open if default states are acceptable. Consider the fixed detect voltage options available across the series to match the target rail. The low current consumption makes it suitable for battery-powered applications. Verify that the open-drain output interface is compatible with the downstream logic levels.

Supervisors Part Context

The XC6121F648ER-G belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors with watchdog functions. This series offers various detect voltage thresholds determined by the alphanumeric suffix, allowing customization without external components. The 'F' suffix typically indicates a specific detect voltage code, while '648' specifies the threshold. The 'ER-G' denotes the tape and reel packaging and environmental compliance. These devices are designed for reliable operation in embedded systems requiring robust power management.

Supervisors Replacement Considerations

Cross-reference other parts within the XC6121-XC6124 series for different detect voltage thresholds if the 4.8V setting does not match the new requirement. Verify compatibility with alternative manufacturers offering similar voltage supervisors with watchdog timers, ensuring pinout and electrical characteristics align. Check datasheets for equivalent packages like 6-USP or 6-UFDFN to confirm mechanical fit.