watchdog timer


Also found in: Acronyms, Wikipedia.

watchdog timer

[′wäch‚dȯg ‚tīm·ər]
(control systems)
In a flexible manufacturing system, a safety device in the form of a control interface on an automated guided vehicle that shuts down part or all of the system under certain conditions.

watchdog timer

A clock circuit that keeps counting from a set number down to zero. If the event it is monitoring occurs before it reaches zero, it resets to the starting number and starts counting down again. If the timer reaches zero, it performs some action; for example, a diagnostic operation such as rebooting the computer or sending an error message. See watchdog packet.
Mentioned in ?
References in periodicals archive ?
The Enhanced Security Package incorporates a range of features, including integrity protection, multiple privilege levels, and a watchdog timer that help protect system-on-chips (SoCs) against both logical and physical attacks, such as IP theft and remote attacks, without compromising performance.
It features a standard 32K battery backed memory capable of storing 10 programs (switch selectable) and up to 5,000 motion commands, eight digital inputs, eight digital outputs, operator control panel, remote start and stop capability, manual jog feature, watchdog timer and motion control software.
Based on the Intel 815 chipset with C-ICH communications controller, the CH815C features integrated VGA, dual 10/100 Ethernet ports, system monitoring and a dual programmable watchdog timer. It supports a maximum of 512MB using industry-standard PC13 3 SDRAM.
With low cost a major concern, the PCA-6003 is designed with carefully selected components that have full industrial features such as PCI/ISA form factor, watchdog timer, wide operating temperature and long MTBF.
The chip also contains 256 Kbytes of static RAM and a set of onboard peripherals which include 4 DMA controllers, 3 timer/counters, interrupt controller, SPI, 2 high-performance serial ports, external bhip selects, and a watchdog timer.
Specific products include a watchdog timer card, data acquisition system models, and digital-analog converter models.
It contains system support functions such as interrupt control unit, codec interface, standard telephony interfaces, multiple memory support ranging from standard 16 Mbit A/DRAM to flash memories from various suppliers, WATCHDOG timer, a clock generator, telephony codecs, and an embedded microcontroller.
The MLC-XT also has a watchdog timer for control applications; if the computer fails, external pumps, valves, or motors can be automatically returned to their default states.
It offers a watchdog timer for reliable operation and Trusted Platform Module (TPM) 2.0 for efficient hardware-based data protection.
Arbe Robotics selected the ARC EM6SI Safety Island because of its integrated self-checking safety monitor, error correcting code (ECC), and programmable watchdog timer. The EV62 Embedded Vision Processor with SEP provides a highly efficient 512-bit wide SIMD vector DSP, and required functional safety capabilities without sacrificing power, area, and performance.
The ADP5041 regulator's on-chip watchdog timer provides reliability by monitoring code execution integrity in processor-based systems and resetting the processor if it fails to strobe within a preset timeout period.
-- Programmable watchdog timer of up to 5 seconds timeout period