DS1836CS-20+T&R

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The DS1836CS-20+T&R are configurable power-on reset and watchdog timers that provide several options of reset and timing functions in a wide range of power management applications including personal computers, telecom systems, Internet of Things, and other computing systems. The DS1836CS-20+T&R is available in enable/disable reset features that enable user-selectable reset for soft or hard reset of the system. It is also available in a watchdog timer feature that provides an independent timer for system monitoring and resetting based on system event.

The DS1836CS-20+T&R is part of the family of power supervisors from Texas Instruments, designed to help ensure the reliable, safe and secure operation of electronic systems by monitoring the system power on and off sequencing and sequencing the system power-on reset (POR) and watchdog timer (WTD) functions within specified circuit parameters. The device provides a wide range of reset and timing functions in a range of power management applications, including but not limited to personal computers, telecom systems, Internet of Things (IoT), cloud computing, energy and automation systems.

The DS1836CS-20+T&R helps create electrical device products that are more reliable and secure, by providing an independent monitoring of the conditions in a circuit and the system events within the circuit. It can reset the system when required and can alert the system of any abnormal events that require attention. With the multiple protection features available, the device can help protect data, minimize the possibility of unintended consequences, and protect against potential vulnerabilities.

The DS1836CS-20+T&R has two separate feature sets: the reset circuit and the watchdog timer (W TD). The reset circuit is used to generate a reset signal upon initiation or power loss in order to properly initialize the hardware for safe and secure operation. The watchdog timer generates a reset signal when certain conditions in the circuit are not met and is used primarily for system monitoring. Several of the product’s features are configurable through signals that come from the device’s control input to provide a scalable and robust protection.

The reset circuit of the DS1836CS-20+T&R can be configured to provide either soft reset or hard reset functionality. The device can initiate a reset by taking a flat NPN logic level signal of 3.3V or less. The device also has an integrated power failure reset (PFR) feature for monitoring incoming voltage levels. An external resistor connected to the reset circuit’s input will cause the device to assert reset when the voltage drops below the selected threshold. Reset is de-asserted when the input voltage goes back up.

The watchdog timer of the DS1836CS-20+T&R consists of an internal counter with pre-programmable timing intervals. The timer is triggered by an asynchronous pulse that is provided by the user’s system. A timer interrupt is generated when the counter reaches its pre-programmed value and an associated reset signal is applied to the system. The W TD of the device can be configured to provide an assert or deassert reset signal, allowing the user to customize the device’s response to a wide range of system events.

The user can also configure whether the W TD is enabled or not, allowing them to determine when the W TD feature is required and when it is not. The user can also choose between a reset pin or an open drain output for the reset signal. Additionally, the device has an active low enable/disable feature that can be used to shut down the device in order to prevent it from generating a reset signal. This feature also allows the user to ensure that the reset signal is not generated when it is not required, thereby saving precious power.

In addition to providing reliable, safe and secure system operation, the DS1836CS-20+T&R also provides a number of system diagnostic features to assist the user in troubleshooting system problems. These features include 1) the ability to monitor the status of the reset signal asserted by the reset circuit; 2) the ability to detect a panic reset state and alert the system of a possible failure; and 3) the ability to monitor the system VTT level to detect a possible abnormality.

In summary, the DS1836CS-20+T&R provides a wide range of reset and timing functions in a wide range of power management applications. Its enable/disable reset features, watchdog timer, and system diagnostic features provide the necessary flexibility and reliability for safe, secure operation of the system. This makes it an excellent choice for use in personal computers, telecom systems, Internet of Things, cloud computing, and other computing systems. The device provides a robust and reliable reset and timing solution for a wide range of applications and offers the benefit of enhanced system safety and protection.

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