Z86318 Datasheet, PDF (1/26 Pages) Zilog, Inc. – Z8 MCU 8-BIT MICROCONTROLLER

PRELIMINARY PRODUCT SPECIFICATION
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Z86318
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Z8^® MCU 8-BIT MICROCONTROLLER
FEATURES
Device
ROM
(KB)
RAM*
(Bytes)
Z86318
124
14
Note: *General-Purpose
I/O
Lines
21
Voltage
Range
0V to 6.0V
s –40°C to +105°C Operating Temperature Range
s Low-Power Consumption: 33 mW (Typical)
s ROM Mask Options:
– Permanent Watch-Dog Timer
– ROM Protect
– Low-Voltage Protection
– Pull-Up/Pull-Down I/O Pins
(Nibble Programmable)
– Feedback Resistor on the On-Chip Oscillator
s On-Chip Oscillator (Crystal, Ceramic Resonator,
LC, or External Clock Drive)
s Fast Instruction Pointer: 1.5 µs @ 4 MHz
s ESD Protection Circuitry
GENERAL DESCRIPTION
The Z86318 is a member of the Z8^® MCU family of CMOS
microcontrollers. This device offers on-board pull-up and
pull-down resistors (ROM mask-option programmable on a
nibble basis), a scalable trip-point buffer to accommodate
opto-transistor outputs, and high drive ports capable of up
to 20 mA current sinking per pin (3 pins maximum).
The Z86318 features I/O Ports (IOL = 20 mA at VOL =
0.8V, 3 pins max.) to provide increased current sinking ca-
pabilities. These devices also offer users a selection of
ROM mask options, which include a permanently enabled
Watch-Dog Timer that ensures operational reliability
across a broad range of application environments.
For applications requiring powerful I/O capabilities, the
Z86318 provides dedicated input and output lines that are
grouped into three ports. These ports can be configured by
means of ROM mask options (nibble-programmable) as
pull ups, pull downs, or neither. There are two basic ad-
dress spaces available. Program Memory, and 124 bytes
of general-purpose registers.
The Z86318 devices provide two on-chip 8-bit programma-
ble counter/timers with a large number of user-selectable
modes. Each counter/timer is driven by its own 6-bit pro-
grammable prescaler. The Z86318 counter/timers off-load
system real-time tasks such as counting/timing and in-
put/output data communications for increased system effi-
ciency.
Notes: All Signals with a preceding front slash, “/”, are ac-
tive Low, e.g.; B//W (WORD is active Low); /B/W (BYTE is
active Low, only).
Power connections follow conventional descriptions be-
low:
Connection
Power
Ground
Circuit
VCC
GND
Device
VDD
VSS
DS96KEY0103 (8/96)
PRELIMINARY
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