XC6108N24DGR-G

PMIC - Supervisors: XC6108N24DGR-G application field and working principle

XC6108N24DGR-G (NuMicro® 6 Series Supervised Reset IC) is an integrated circuit developed by Nuvoton Technology Corporation, a company founded in 2008 as a subsidiary of the Winbond electronic Corporation. This Supervised Reset IC is part of the NuMicro® 6 series, which is specifically designed to meet the performance and space requirements of IoT, industrial and automotive applications.

XC6108N24DGR-G is a voltage supervisor IC, which is intended for use in systems that require continuous monitoring and reset of microprocessors or other system functions. It provides an adjustable supply voltage and supervisor reset pin that triggers when the reset input voltage reaches the programmed reset voltage threshold. It can also be used as a primitive watchdog timer, which is triggered when a selectable timeout period is exceeded, thereby effectively resetting the system.

Package and Pin Out of XC6108N24DGR-G

This Supervisory IC is packaged in 4 × 4 mm QFN encapsulated package. It has 12 pins, namely, GND, VDD, RESET, RESV, VTRK, VCC, RT, VMON1, VMON2, MT, SYSRST and SYSRSTB, as shown in Figure 1. In addition to the core reset pins (RESET and RESV), this IC integrates a programmable voltage threshold comparator, a voltage tracker and a manual reset pin (MT) for resetting the IC itself.

Applications of XC6108N24DGR-G

This Supervisory IC is suitable to use in variety of applications like automotive, industrial, consumer and computer products, such as vehicle control, board mounted power and control application and data processing applications. Its design enables user to monitor the power down, power up and signal watching of microprocessors that require an active reset signal in order to correctly reset their system. In addition, it has a programmable reset threshold and hysteresis, which can be adjusted according to the user’s application.

Features of XC6108N24DGR-G

This Supervisory IC integrates various features, making it well-suited for various applications:

• Integrated Reset Circuit with Accurate Reset Threshold Voltage VTRK:
  • Reset threshold voltage (VTRK) is adjustable and ranges from 1.65V ~ 5.5V.
• Wide Operating Voltage Range:
  • Operates from 1.65V to 5.5V.
• High-Speed Reset:
  • Fast reset speed of 5µs or less.
• Hysteresis Adjustable From 0.5V to 4V:
  • Allows user to adjust hysteresis in order to match with equipped system.
• Dedicated Manual Reset (MT):
  • The dedicated manual reset input enables system to reset itself.

Working Principle of XC6108N24DGR-G

The XC6108N24DGR-G Supervisory IC is a combination of features that provide protection for the microprocessor and other system functions from a reset fault. It is used as a primitive watchdog timer, in which a selectable timeout period is exceeded and a reset is triggered. In addition, it monitors and maintains the supply voltage of the microprocessor and allows the system to reset when the input voltage drops below the programmed reset voltage threshold.

The reset process of this Supervisory IC starts with the voltage monitoring circuit, which has two independent voltage monitor pins (VMON1 and VMON2). Both pins can be used to monitor two different external voltage sources. When the voltage level at either of these pins falls below the threshold voltage (VTRK), the internal reset circuit is triggered and a reset pin is driven low. This in turn triggers the RESET pin, signaling a reset of the microprocessor or other system functions.

In addition to the reset pin, the XC6108N24DGR-G also integrates both a manual reset and a watchdog timer to provide additional protection against reset faults. The dedicated manual reset (MT) pin allows the user to reset the chip externally via a controller, while the watchdog timer can reset the system after a selectable timeout period is exceeded.

Conclusion

The XC6108N24DGR-G Supervisory IC is widely used in IoT, automotive, industrial and computer applications. It is designed to provide a comprehensive reset protection solution for microprocessors and offers adjustable voltage threshold and hysteresis for reset circuit, as well as an onboard manual reset and watchdog timer. Moreover, it operates from 1.65V to 5.5V, providing an ideal solution for applications where chip reset is necessary.