DS1834AU

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The DS1834AU Supervisor integrated circuit is a low-power, precision, low-threshold supervisor circuit for 3-volt and 5-volt microprocessor applications. The DS1834AU provides processor reset at power-on and on further system reset signals. This supervisor also includes non-volatile memory for saving critical system variables.
The DS1834AU has a reset logic with both active-high and active-low reset logic outputs. The active-high logic output is the Power-On-Reset (POR), while the active-low logic output is the Supervisor-Output (SO). Both the POR and the SO logic outputs are asserted upon power-on or system reset. The reset outputs are then de-asserted after a predetermined power-on delay.
The DS1834AU has an adjustable reset delay that can be set by the user. The reset delay varies from 7.3ms to 22ms. Additionally, the DS1834AU has an integrated watchdog timer that can be used to generate a reset signal to the microprocessor after a fixed delay of 312ms. The DS1834AU is also capable of generating a non-maskable interrupt (NMI) to the microprocessor after an adjustable delay ranging from 8ms to 20ms.
The DS1834AU also includes a voltage supervisor circuit with a programmable threshold voltage. The threshold voltage is set by the user and can range from 2.5V to 4.3V. The supervisor circuit detects input voltages below the programmed threshold and generates a reset signal to the microprocessor. The supervisor circuit can also be used for fault detection in the system.
The integrated non-volatile memory in the DS1834AU can be used to store critical system variables. This non-volatile memory can be written and read at any time. The non-volatile memory is a 256-byte array which is organized as eight 8-bit registers. This memory can be used to store critical system parameters such as system voltage thresholds, watchdog timer delays, and reset delays.
The DS1834AU Supervisor Integrated Circuit is an ideal solution for any 3-volt or 5-volt microprocessor application. It provides low-power, precision reset logic with both active-high and active-low logic outputs, adjustable reset delay, an integrated watchdog timer, and a voltage supervisor circuit with a programmable voltage threshold. Additionally, it includes a non-volatile memory array that can be used to store critical system variables. With its wide range of features, the DS1834AU Supervisor makes it easy to design robust and reliable microprocessor applications.

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