GENERAL DESCRIPTION

The Z380™ Microprocessor is an integrated high-performance microprocessor with fast and efficient throughput and increased memory addressing capabilities. The Z380™ offers a continuing growth path for present Z80-or Z180-based designs, while maintaining Z80® CPU and Z180® MPU object-code compatibility. The Z380™ MPU enhancements include an improved 280 CPU, expanded 4-Gbyte space and flexible bus interface timing.

FEATURES

■ Static CMOS Design with Low-Power Standby Mode

Option

■ 32-Bit Internal Data Paths and ALU

■ Operating Frequency

- DC-to-18 MHz at 5V

- DC-to-10 MHz at 3.3V

■ Enhanced Instruction Set that Maintains Object-Code

Compatibility with Z80® and Z180™ Microprocessors

■ 16-Bit (64K) or 32-Bit (4G) Linear Address Space

■ 16-Bit Data Bus with Dynamic Sizing

■ Two-Clock Cycle Instruction Execution Minimum

■ Four Banks of On-Chip Register Files

■ Enhanced Interrupt Capabilities, Including

16-Bit Vector

■ Undefined Opcode Trap for Z380™ Instruction Set

■ On-Chip I/O Functions:

- Six-Memory Chip Selects with Programmable Waits

- Programmable I/O Waits

- DRAM Refresh Controller

■ 100-Pin QFP Package