Z86U18 Datasheet, PDF (1/30 Pages) Zilog, Inc. – USB Device Controller with CMOS Z86K15 MCU

PRELIMINARY PRODUCT SPECIFICATION
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Z86U18
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USB DEVICE CONTROLLER WITH
CMOS Z86K15 MCU
FEATURES
Device
Z86U18
ROM
(KB)
4
RAM
(Bytes)
188
I/O
Lines
32
Speed
(MHz)
6
s USB Serial Interface Engine, Transceiver, and MCU
Intergrated for USB Function Controller
s +4.0V to +5.5V Operating Range
s Low Power Consumption: 60 mW @ 6 MHz
s Digital Inputs CMOS Levels with Internal Pull-Up
Resistors
s Four Direct Connect LED Drive Ports
s Power-On Reset (POR), Hardware Watch-Dog Timer
(WDT)
s Intergrated USB Transceiver @ 1.5 Mb/sec
s For Use In A Variety of Applications Including Keyboards
and Game Controllers
s Programmable 8-Bit Counter/Timer, with 6-Bit
Programmable Prescaler
s Five Vectored, Priority Interrupts from Five Different
Sources
s On-Chip Oscillator, Which Accepts A Crystal, Ceramic
Resonator, LC or External Clock Drive (all clock speeds
@ 6 MHz)
s Low System EMI Emission
s HALT/STOP Modes
GENERAL DESCRIPTION
The Z86U18 USB Controller is a member of the Z8^¨ MCU
family. The Z86U18 is characterized by a flexible I/O
scheme, an efficient register architecture, and a number of
ancillary features. It contains a dedicated USB interface
(transceiver and SIE).
For applications demanding powerful I/O capabilities, the
Z86U18 (40- and 44-pin versions) provides 32 pins dedi-
cated to application input and output. These lines are
grouped into four ports, each port consists of eight lines
and are configurable under software control to provide tim-
ing, status signals, and serial or parallel I/O ports. It also
has 2 pins to connect directly to the USB cable.
To unburden the system from coping with real-time tasks,
such as counting/timing and I/O data communications, the
Z86U18 offers an on-chip counter/timer with a large num-
ber of user-selectable modes.
The Z86U18 achieves low EMI by means of several circuit
implementations in the output drivers and clock circuitry of
the device.
With fast execution, efficient use of memory, sophisticated
interrupt, input/output bit-manipulation capabilities, and
easy hardware/software system expansion, along with low
cost and low power consumption, the Z86U18 meets the
needs of a variety of sophisticated applications (Figure 1:
Functional Block Diagram)
Notes: All signals with a preceding front slash, "/", are ac-
tive Low. For example, B//W (WORD is active Low); /B/W
(BYTE is active Low, only).
DS97KEY0102
PRELIMINARY
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