ARMv4T

ARMv4T is an architecture version for ARM processors. The 'T' suffix denotes the inclusion of Thumb instruction set support, a 16-bit instruction set that offers increased code density compared to the original 32-bit ARM instructions. This dual-state capability allows the processor to switch between 32-bit ARM and 16-bit Thumb modes, optimizing for both performance and memory usage. ARMv4T was a significant step in the evolution of the ARM architecture, enabling more efficient embedded systems and mobile devices. It introduced features that laid the groundwork for subsequent architecture versions. Processors implementing ARMv4T are capable of executing both ARM and Thumb instructions, providing flexibility for developers. The Thumb instruction set, with its smaller instruction size, can reduce the overall program footprint, which is particularly beneficial in memory-constrained environments. ARMv4T was widely adopted in various applications, contributing to the widespread success of the ARM architecture in the embedded market.