Application Specific Real-Time Microkernel in Hardware
This article demonstrates that a hardware based real-time kernel can keep or increase the performance of a monolithic structured real-time operating system, while improving system modularity.
Vendor:
Nuclei System Technology
Category:
Timers & Watchdogs
Window Watchdog
The WWDG (WindowWatchdog) is used to detect the occurrence of a software fault, usually generated by external interference or by …
Overview
The WWDG (WindowWatchdog) is used to detect the occurrence of a software fault, usually generated by external interference or by unforeseen logical conditions, which causes the application program to abandon its normal sequence. The watchdog circuit generates an MCU reset on expiry of a programmed time period, unless the program refreshes the contents of the downcounter before the T[21:6] bit becomes cleared. An MCU reset is also generated if the 22-bit downcounter value (in the control register) is refreshed before the downcounter has reached the window register value. This implies that the counter must be refreshed in a limited window.
Key features
- Programmable free-running downcounter
- Conditional reset:
- Reset (if watchdog activated) when the downcounter value becomes less than 0x40
- Reset (if watchdog activated) if the downcounter is reloaded outside the window
- Early wakeup interrupt (EWI): triggered (if enabled and the watchdog activated) when the downcounter is equal to 0x40
- Counter freeze in JTAG debug mode
Files
Note: some files may require an NDA depending on provider policy.
Specifications
Identity
Part Number
WWDG
Vendor
Nuclei System Technology
Type
Silicon IP
Provider
Nuclei System Technology
HQ:
China
Nuclei System Technology is a top RISC-V processor IP vendor based in China . Nuclei is dedicating to develop configurable low-power and high-performance 32/64-bit RISC-V processors and related solutions for AIoT applications.
Nuclei has developed several series products to address the full range of embedded system applications, including N100, N200, N300, N/NX/UX 600, with extensible and security features. We have collaborated with many well-known companies for silicon-proven solutions, e.g. the first RISC-V general MCU - GDVF103 with GigaDevice.
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Frequently asked questions about Timers & Watchdogs IP cores
What is Window Watchdog?
Window Watchdog is a Timers & Watchdogs IP core from Nuclei System Technology listed on Semi IP Hub.
How should engineers evaluate this Timers & Watchdogs?
Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this Timers & Watchdogs IP.
Can this semiconductor IP be compared with similar products?
Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.