The eSi-1650 is an advanced 16-bit RISC processor core that incorporates an instruction cache for enhanced performance. Targeted at low-power applications traditionally serviced by 8-bit processors, the inclusion of caching makes the eSi-1650 especially effective when using non-volatile memories like Flash.
The processor's power efficiency is emphasized through a low gate count and caches, which optimize the speed and power consumption when interfacing with slow memory technologies. This RISC core also supports a rich suite of instructions including full 32-bit mathematical operations and various user-defined instructions, providing crisp, responsive performance for embedded systems.
Additional features include a configurable pipeline, vector interrupts, and compatibility with various AMBA buses, making integration with existing systems straightforward. The processor supports both dedicated user and supervisor operating modes, reflecting its flexibility and security considerations in professional applications.