ARM940T

The ARM940T is a 32-bit RISC microprocessor developed by ARM Holdings. It is part of the ARM9 family of processors and was introduced in 2000. The ARM940T is designed for use in a wide range of applications, including mobile devices, set-top boxes, and other embedded systems. It features a 5-stage pipeline and supports the ARM architecture's Thumb instruction set, which allows for more efficient code density.

The ARM940T operates at clock speeds up to 200 MHz and includes a memory management unit (MMU) with a translation lookaside buffer (TLB) for virtual memory support. It also has a separate instruction and data cache, each with a size of 8 KB. The processor includes a 32-bit multiply-accumulate unit and supports hardware division.

One of the key features of the ARM940T is its low power consumption, making it suitable for battery-operated devices. It also includes a debug interface that supports the ARM EmbeddedICE and Embedded Trace Macrocell (ETM) for debugging and performance monitoring.

The ARM940T has been widely used in various products, including the Nintendo DS handheld gaming console, where it is known as the ARM946E-S. It has also been used in other handheld devices and set-top boxes. The processor has been succeeded by the ARM966E-S, which offers improved performance and additional features.