Implements fast, fully-functional, single-chip, 8bit microprocessor wi
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CZ80CPU
Implements fast, fully-functional, single-chip, 8bit microprocessor with same instruction Z80. core 16-bit address capable directly accessing 64kB memory space. root instructions with reserved bytes prefixes, accesses additional instructions. microcode-free design strictly synchronous, with internal tri-states synchronous reset. Developed easy reuse Actel FPGA applications, CZ80CPU available optimized several device families with competitive utilization performance characteristics.
8-bit Microprocessor Core
Features
Programming features contain bits read/write memory that accessible programmer. internal registers include accumulator 8-bit registers that paired three 16-bit registers. addition general registers, 16-bit stack-pointer, 16-bit program-counter, 16-bit index registers provided.
Control Unit 8-bit Instruction decoder Arithmetic-Logic Unit 8-bit arithmetic logical operations 16-bit arithmetic operations Boolean manipulations
Symbol
Register File Unit Duplicate both general purpose flag registers 16-bit index registers
Interrupt Controller Three modes maskable interrupts maskable interrupt External Memory interface address program memory address data memory address input/output devices
On-core dynamic memory refresh counter
Applications
Suitable many embedded controller applications, including industrial control systems, point-of-sale terminals, automotive controls.
CAST, Inc.
April 2003
Page
Actel CompanionCore Program
CAST CZ80CPU Core Datasheet
Performance
CZ80CPU technology-independent design that implemented variety process technologies. Results with representative Actel devices shown Table
Utilization (Cells Tiles) Sequential Tiles Combinatorial 8014 Tiles 6298 Total
Family ProASIC
PLUS
Device (-speed grade) APA750-STD AX1000-3
Axcelerator
Table Utilization Table CZ80CPU Core implemented Actel Devices
Deliverables
Post-synthesis EDIF netlist (source code versions also available; contact CAST) Extensive testbench Simulation vectors expected results Place route scripts Detailed user's documentation
Verification Methods
CZ80CPU core's functionality verified means proprietary hardware modeler. same stimulus applied hardware model that contained original Zilog Z84C00 chip, results compared with core's simulation outputs.
Contact Information
CAST, Inc. Stonewall Court Woodcliff Lake, Jersey 07677 Phone: 201-391-8300 Fax: 201-391-8694 E-Mail: info@cast-inc.com
Copyright 2003, CAST, Inc. Rights Reserved. Contents subject change without notice.
CAST, Inc.
Page
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