CZ80CPU - Zilog® Z80-compatible Microprocessor

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The CZ80CPU is a fully functional 8-bit processor  IP core that has the same instruction set as the Zilog® Z80. The CZ80CPU processor has a 16-bit address bus capable of direct access to 64kB of memory space. It implements a language of 252 root instructions with the reserved 4 bytes as prefixes, and accesses an additional number of 308 instructions.

Programming features contain 208 bits of read/write memory that are accessible to the programmer. The internal registers include an accumulator and six 8-bit registers that can be paired as three 16-bit registers. In addition to general registers, a 16-bit stack-pointer, 16-bit program-counter and two 16-bit index registers are provided.

  • Highlights
  • Benefits
  • Applications
  • Deliverables
  • Zilog® Z80-compatible
  • Control Unit with an 8-bit Instruction decoder
  • Arithmetic-Logic Unit for 8/16-bit arithmetic and 8-bit logical operations
  • Interrupt Controller with three modes of maskable interrupts and a non-maskable interrupt
  • External Memory interface that addresses up to 64KB of program/data memory
  • The core can be used as an equivalent of Zilog® Z80, that due to its popularity has variety of industry certified software ready to be used
  • Easy implementation in SoC designs targeted to FPGAs or ASICs
  • Significant performance improvements over the original Z80 from Zilog®
  • 8-bit data processing applications
  • Low power consumption applications
  • High speed control systems

Deliverables

  • VDHL/Verilog source code
  • Synthesis support for Synopsys® tools with a set of synthesis scripts
  • Simulation support for Mentor Graphics®, Aldec® and Cadence® tools with a set of scripts and macros
  • Extensive VHDL/Verilog 2001 test bench
  • Documentation
  • A collection of Z80 assembler programs executed directly by the test bench
  • 30 days of technical support 
  • 90 days of warranty against defects

Delivery Options

  • EDIF netlist for FPGA and low volume production
  • Evaluation system for proprietary EB5-Tiny board
  • One-year maintenance
  • On-site support and training

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