The ZiLOG Z80 CPU family of components are fourth-generation enhanced microprocessors with exceptional computational power. They offer higher system throughput and more efficient memory utilization than comparable second and third-generation microprocessors. The speed offerings from 6–20 MHz suit a wide range of applications that migrate software. The internal registers contain 208 bits of read/write memory that are accessible to the programmer. These registers include two sets of six general-purpose registers which may be used individually as either 8-bit registers or as 16-bit register pairs. In addition, there are two sets of accumulator and flag registers. The Z80 CPU also contains a Stack Pointer, a Program Counter, two index registers, a REFRESH register, and an INTERRUPT register. The CPU is easy to incorporate into a system since it requires only a single +5V power source. All output signals are fully decoded and timed to control standard memory or peripheral circuits; the Z80 CPU is supported by an extensive family of peripheral controllers.
