Zilog Introduces Enhanced, Low-Voltage Serial Communications Controller

Based on Popular Zilog(R) Serial Communications Controller, New Solution Is
Ideal for Computer Peripherals and Other Applications Requiring Lower Power

SAN JOSE, Calif., June 30 /PRNewswire-FirstCall/ -- Zilog, Inc. (Nasdaq: ZILG)
a trusted supplier of application specific, embedded system-on-chip (SoC)
solutions for industrial and consumer markets, today announced a new enhanced
low-voltage serial communications controller (SCC) for a variety of computing
applications requiring increased performance and lower power consumption.

The Zilog Z8523L Enhanced SCC (ESCC) builds on Zilog's popular and original
discrete SCC, providing a low-power solution that reduces the voltage from 5
to 3.3 volts. The ESCC also features performance improvements that allow
applications including computer peripherals, networking equipment and routers
to experience faster data rates and increased processor bandwidth.

"Zilog has made significant improvements with our new ESCC that helps our
customers bring their high-speed data applications to market quicker, reducing
their total cost and extending the life of their applications," said Mike Orr,
Zilog vice president and general manager, Microcontroller Business Unit.

Before developing the 3.3 volt ESCC, Zilog customers used a regulator to
achieve lower voltage with the original 5 volt Zilog SCC. The Zilog 3.3 volt
ESCC has deeper FIFOs and other features that significantly reduce the
software overhead for each channel. This allows for more channels per system,
faster data rates with more CPU bandwidth and overall lower CPU costs. The
ESCC can support multiple channel and multiple protocols that easily interface
to 8/16 bit addressable non-multiplexed address/data buses. The ESCC can be
configured to satisfy a wide variety of serial communications applications.
On-chip features include baud rate generators, digital PLLs and crystal
oscillators to reduce external logic. Additional features may include
optimized FIFOs to support high speed SDLC transfers using DMA controllers.

The ESCC handles asynchronous formats, synchronous byte-oriented protocols and
synchronous bit-oriented protocols. The ESCC can generate and check CRC codes
in any synchronous mode and can be programmed to check data integrity in
various modes. The ESCC also has facilities for modem controls in both
channels. In applications where these controls are not needed, the modem
controls can be used for general-purpose I/O.

Zilog ESCC's are designed for use in multiple applications for serial
communication needs. One of the key features offered by the ESCC is Extended
Read Enable. Write Register values from the WR3, WR4, WR5, WR7, and WR10 can
be examined in the ESCC. This feature improves system testability. It is also
crucial for SCC/ESCC differentiation and allows generic software structures
for all SCC/ESCC devices.

The Zilog Z85230 Enhanced SCC is in production and now available to ship to
customers that place orders through distributors. For more information, visit
www.zilog.com.

About Zilog, Inc.
Zilog is a trusted supplier of application specific, embedded system-on-chip
(SoC) solutions for the industrial and consumer markets. From its roots as an
award-winning architect in the microprocessor and microcontroller industry,
Zilog has evolved its expertise beyond core silicon to include SoCs, single
board computers, application specific software stacks and development tools
that allow embedded designers quick time to market in areas such as energy
management, monitoring and metering and motion detection. For more
information, visit http://www.zilog.com/.

Zilog is a registered trademark of Zilog, Inc. in the United States and in
other countries.

Contact:

Daniel Francisco
Francisco Group for Zilog
916-812-8814
dan@franciscogrp.com

SOURCE Zilog, Inc.

Daniel Francisco of Francisco Group, +1-916-812-8814, dan@franciscogrp.com,
for Zilog