ADM812MART-REEL

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The ADM812MART-REEL is a high-performance, low power, reset and power-on one-time supervisory circuit from Analog Devices. It’s a polymer-based component designed to detect and generate power-fail detect signals in real time, using very low power consumption. It’s versatile, small size and high accuracy make it suitable for most power reset applications.

The ADM812MART-REEL belongs to the PMIC – Supervisors family that incorporates peripherals / power management functions in one component. It uses an integrated 3.2V analog reference and monitor circuit to track a local power down condition, detect and generate power-fail detect signals as reset and power-on one-time reset signals, as well as a watchdog timer function.

The ADM812MART-REEL can detect a power down condition in a very small time window, usually50µsec. The reset and power-on one-time reset signals are generated with an accuracy of 1%, guaranteeing that any microprocessor interrupts will not be lost in case of power loss. Additionally, its watchdog timer feature will periodically reset the microprocessor if it hangs.

The ADM812MART-REEL can be used in a wide variety of applications, ranging from computers to industrial controllers and embedded systems. It’s vital in applications that require a power supply, as it ensures the proper power-on sequence of the system components and monitors the power integrity to detect and generate a reset signal in case of power loss. Additionally, its watchdog timer feature will allow the system to reset in case of software errors.

The ADM812MART-REEL makes use of a voltage divider with an adjustable reference voltage. This reference voltage can be adjusted in order to detect different power failure thresholds or power down conditions. When the monitored voltage drops below the reference voltage, the reset and power-on one-time reset signals are automatically generated and sent to the board for reset.

The ADM812MART-REEL also comes with its own watchdog timer, which is basically a timer that periodically runs in the background. Whenever the CPU or microprocessor fails to respond in time, the watchdog timer will time out and generate a reset signal. This feature allows the system to recuperate from minor software errors.

The ADM812MART-REEL power-fail detect circuit is compatible with a wide variety of microcontrollers and microprocessors such as the Atmel ATmega and PIC microcontrollers, Arduino boards, and the ARM Cortex microprocessor family.

In conclusion, the ADM812MART-REEL is a versatile, low-power, reset and power-on one-time supervisory circuit from Analog Devices. It has a robust deep power-fail detect circuit with an adjustable reference voltage, a watchdog timer function, and is compatible with various microprocessor families. Therefore, it makes the perfect choice for applications requiring reliable power fail diagnosis and reset signal generation.

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