Z80185/Z80195
P R E L I M I N A R Y
Zilog
SMART PERIPHERAL CONTROLLES
PRELIMINARY PRODUCT SPECIFICATION
Z80185/Z80195
SMART PERIPHERAL CONTROLLERS
FEATURES
■ Enhanced Z8S180 MPU
ROM
(KB)
32 x 8
0
UART
Speed
(MHz)
20, 33
20, 33
Part
Baud Rate
512 Kbps
512 Kbps
■ Four Z80 CTC Channels
Z80185
Z80195
■ One Channel ESCC™ Controller
■ Two 8-Bit Parallel I/O Ports
■ Bidirectional Centronics Interface (IEEE 1284)
■ Low-EMI Option
■ 100-Pin QFP Package
■ 5.0-Volt Operating Range
■ Low-Power Consumption
■ 0°C to +70°C Temperature Range
GENERAL DESCRIPTION
Seventeen lines can be configured as bidirectional
Centronics (IEEE 1284) controllers. When configured as a
1284 controller, an I/O line can operate in either the host or
peripheralroleincompatible, nibble, byteorECPmode. In
addition, the Z80185 includes 32 Kbytes of on-chip ROM.
The Z80185 and Z80195 are smart peripheral controller
devices designed for general data communications appli-
cations, and architected specifically to accommodate all
input and output (I/O) requirements for serial and parallel
connectivity. Combining a high-performance CPU core
withavarietyofsystemandI/Oresources, theZ80185/195
are useful in a broad range of applications. The Z80195 is
the ROMless version of the device.
These devices are well-suited for external modems using
aparallelinterface,protocoltranslators,andcost-effective
WAN adapters. The Z80185/195 is ideal for handling all
laser printer I/O, as well as the main processor in cost-
effective printer applications.
The Z80185 and Z80195 feature an enhanced Z8S180
microprocessor linked with one enhanced channel of the
Z85230 ESCC™ serial communications controller, and 25
bits of parallel I/O, allowing software code compatibility
with existing software code.
Notes:
All Signals with a preceding front slash, "/", are active Low.
Power connections follow conventional descriptions below:
Connection
Circuit
Device
Power
Ground
VCC
GND
VDD
VSS
DS971850301
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