Z-380 Datasheet PDF

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ZILOG

PRODUCT SPECIFICATION

MICROPROCESSOR

FEATURES

s Static CMOS Design with Low-Power Standby Mode

Option

s 32-Bit Internal Data Paths and ALU

s Operating Frequency

- DC-to-18 MHz at 5V

- DC-to-10 MHz at 3.3V

s Enhanced Instruction Set that Maintains Object-Code

Compatibility with Z80® and Z180™ Microprocessors

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

s 16-Bit Data Bus with Dynamic Sizing

Z380™

MICROPROCESSOR

s Two-Clock Cycle Instruction Execution Minimum

s Four Banks of On-Chip Register Files

s Enhanced Interrupt Capabilities, Including

16-Bit Vector

s Undefined Opcode Trap for Z380™ Instruction Set

s On-Chip I/O Functions:

- Six-Memory Chip Selects with Programmable Waits

- Programmable I/O Waits

- DRAM Refresh Controller

s 100-Pin QFP Package

GENERAL DESCRIPTION

The Z380™ Microprocessor is an integrated high-

performance microprocessor with fast andefficientthrough-

put 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.

An enhanced version of the Z80 CPU is key to the Z380

MPU. The basic addressing modes of the Z80 micropro-

cessor have been augmented as follows: Stack Pointer

Relative loads and stores, 16-bit and 24-bit indexed off-

sets, and more flexible Indirect Register addressing, with

all of the addressing modes allowing access to the entire

32-bit address space. Additions made to the instruction

set, include a full complement of 16-bit arithmetic and

logical operations, 16-bit I/O operations, multiply and

divide, plus a complete set of register-to-register loads

and exchanges.

The expanded basic register file of the Z80 MPU micropro-

cessor includes alternate register versions of the IX and IY

registers. There are four sets of this basic Z80 micropro-

cessor register file present in the Z380 MPU, along with the

necessary resources to manage switching between the

different register sets. All of the register-pairs and index

registers in the basic Z80 microprocessor register file are

expanded to 32 bits.

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PS010001-0301

Zilog	Part Number	Z-380
	Description	Microprocessor
	Page	30 Pages

Z-380 Datasheet PDF - Zilog