MAX823REXK+T

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Introduction

MAX823REXK+T is a highly integrated voltage supervisor and flash memory supervisory circuit from Maxim Integrated. This device provides a complete voltage supervisor solution for very low power embedded systems by combining the ability to monitor one or two power supplies and to store system specific data in its embedded 32 x 8 bit non-volatile EEPROM. The MAX823REXK+T is part of Maxim’s Power Management Interface Controllers (PMIC) and Supervisors product portfolio.

Application Field

The MAX823REXK+T is used primarily in applications requiring reliable alerting when power levels fall below predetermined trip point levels. The MAX823REXK+T has a built-in low power voltage supervisor with multiple trip points. It can detect over voltage, under voltage and windowed-trip situations on one or two power supplies. This device is used in a wide range of applications from automotive to industrial, test and measurement, personal and portable systems, such as cell phones, PC monitors, PDAs, digital cameras, automotive systems and battery powered equipment. The MAX823REXK+T is also particularly suitable for precise voltage monitoring of multiple power supplies in high-density packaging.

Working Principle

The MAX823REXK+T monitors two system supplies or two adjustable voltage settings with programmable reset thresholds, timeout periods and processor shutdown periods, allowing the supervisor to operate with varying activities of the system. The MAX823REXK+T is designed to define, program and protect the system’s environment. It can manage a system reset, execute system power-off and power-on operations, and also monitor system power-up and power-down. The MAX823REXK+T, features include: programmable voltage trip points, wide power-on reset window, WATCHDOG timeout, adjustable reset timeouts and active high and active low RESET#. In addition, the MAX823REXK+T also provides system information through an integrated 32 x 8bit non-volatile EEPROM for program or device ID information or calibration data.

Conclusion

The MAX823REXK+T from Maxim Integrated is a highly integrated voltage supervisor and flash memory supervisory circuit. This device provides a complete voltage supervisor solution for very low power embedded systems. It offers a range of features such as programmable voltage trip points, wide power-on reset window, WATCHDOG timeout, adjustable reset timeouts and active high and active low RESET#. Furthermore, it has a built-in 32 x 8 bit non-volatile EEPROM, making it suitable for a wide range of applications from automotive to industrial, test and measurement, personal and portable systems, such as cell phones, PC monitors, PDAs, digital cameras, automotive systems and battery powered equipment.

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