NEC V25

The NEC V25 (μPD70320) is the microcontroller version of the NEC V20 processor, manufactured by NEC Corporation. Features include:


 * NEC V20 core: 8-bit external data path, 20-bit address bus, machine code compatible with the Intel 8088 (the processor used in the original IBM PC)
 * On-chip peripheral hardware mapped in memory address space
 * Two-channel 16-bit timers
 * Internal interrupt controller
 * Dual-channel UART and baud rate generator for serial communications
 * Eight register banks, base address of which can be dynamically relocated with Internal Data area Base (IDB) Register.
 * A two-channel DMA controller, enabling the direct addressing of the entire 1MB memory address space.

It was officially phased out by NEC in early 2003.