ZiLOG Expands World-renown Z80 Embedded Microprocessor Line; Latest in Z80 family delivers more power, performance, and peripherals.

SAN JOSE, Calif.--(BUSINESS WIRE)--Sept. 28, 1999--

ZiLOG Inc. today announced that it expanded its world-renown Z80 family with two powerful microprocessors that may be used in an incredible range of 8-bit applications.

Both products' CPUs improve the Z80 execution efficiency while still providing full backward compatibility with existing ZiLOG Z80 devices.

There is a vast worldwide installed base of ZiLOG's Z80, whose popularity has grown steadily since ZiLOG first introduced the product 25 years ago. Building on the Z80's legacy, ZiLOG has not only enhanced the CPUs but also the peripheral suite on the new Z80S183 and the Z80S188. Unlike most 8-bit processors that address 64K, ZiLOG's Z180 family can address up to 1Mbyte of memory.

"ZiLOG's advanced embedded microprocessors, when combined with powerful peripheral suites, provide performance rivaling and often exceeding that of 16-bit microprocessors. These processors allow our customers to upgrade the performance of their products while preserving their Z80 software investment," said Danny Chi, embedded MPU business line manager.

ZiLOG created a complete set of tools for these embedded solutions. The evaluation board, when used with the ICE PACK, provides accurate two-pin, on-chip emulation and debugging. This translates into quicker time to market. In addition, third-party hardware and software tools are available.

Applications for these embedded microprocessors are endless. The Z80S183 is perfect for electronic banking, gaming, gas meters, industrial control, motor controls, musical instruments, oscilloscopes and remote switches. The Z80S188's applications range from security and instrumentation to secure processing.

Z80S183

The Z80S183 is a complete system-on-a-chip embedded processor. It includes an eight-channel 10-bit A/D, a 10-bit D/A converter, and an eight-channel complex waveform generator (POG). Other features include a watch-dog timer, a real-time clock, 32-bits of general purpose I/O, 2K SRAM, 1K boot ROM, and 1 Mbyte external addressing. This processor offers faster execution speeds, EMI noise reduction and power-saving modes. Not only does the core consume less power during normal operations, it contains several power down modes to further reduce power consumption.

Z80S188

The Z80S188 processor provides 8 Mbyte addressing capability -- one of the world's largest memory address space on an 8-bit core. In addition, this processor has 4KB of ROM and 1KB of RAM. It also includes a vast array of peripherals including 4 CTCs, 2 SIOS, CGS, WDT and PIO.

Part Features

Complete product specifications for the Z80S183 and the Z80S188 are available by using ZiLOG's new Part Finder parametric search engine. Located on ZiLOG's Web site at www.zilog.com, Part Finder may be used to quickly search and compare the entire Z80 product line to determine the right solution for a customer's design needs. -0-

Z80S183

--       Improved CPU performance
  -        Up to 33Mhz speed
  -        5V and 3.3V operation
  -        2 DMA channels
  -        2 enhanced UARTs (512 Kbps)
  -        2 16-bit timers
  -        CSIO
  -        MMU (1Mbyte)
  -        Edge/level triggered interrupt controller
  -        Wait state generator
  -        Low-power modes
  -        Low EMI modes
--       32-bit GPIO
--       8 channels 10-bit A/D
--       8-bit programmable output generator (POG)
--       10-bit digital to analog converter
--       2K static SRAM
--       1K boot ROM (virtual loader)
--       Real-time clock
--       Low-power PLL oscillator
--       Watch-dog timer
--       Economical 100-pin VQFP package

Z80S188

--       Code-compatible with Z80 and Z8X180
--       Two multiprotocol serial I/O channels
--       32-bit CRC on SIO channels
--       Four 8-bit parallel ports with handshake logic
--       Four Counter/Timer channels
--       Two 16-bit programmable reload timers
--       4K ROM with security protection
--       1K RAM with security protection
--       Enhanced Memory Management Unit addresses up to 8MB
--       Two direct memory access channels
--       Two enhanced UART channels
--       Clocked serial I/O interface
--       Watch-dog timer
--       Chip select and wait state generators
--       Three-interrupt request inputs
--       ZiLOG Debug Interface (ZDI)
--       DC to 33MHz operating frequency @ 5.0V
--       DC to 20MHz operating frequency @ 3.3V
--       Clock divide by 2, 1X, or 2X
--       Fully static CMOS design with low power standby modes
--       160-Pin QFP package

     To purchase either of these products, contact ZiLOG's Worldwide
Customer Support Center at [e-mail] or 1-877-945-6427.

About ZiLOG Inc.

     ZiLOG is a leading global design solutions company specializing
in embedded and integrated circuits for the data communications, home
entertainment and integrated controls markets. Headquartered in
Campbell, Calif., ZiLOG employs an estimated 1,300 people worldwide.
It announced 1998 revenues of $204.7 million. Texas Pacific Group and
its affiliates, a $2.5 billion private investment partnership, own a
majority interest in ZiLOG. ZiLOG maintains design centers in
Campbell, Calif., Austin, Texas, Nampa, Idaho, and Seattle, Wash., a
worldwide customer service center in Austin, advanced manufacturing in
Nampa and test operations in Manila, Philippines. It has 27 direct
sales offices and more than 120 distributor locations worldwide.
www.zilog.com

     Z80 is a trademark of ZiLOG Inc. All other company and product
names may be trademarks of the respective companies with which they
are associated.