Z87100 Datasheet, PDF (1/48 Pages) Zilog, Inc. – Wireless Transmitter

PRELIMINARY PRODUCT SPECIFICATION
3
Z87100
3
PN MODULATOR
WIRELESS TRANSMITTER
FEATURES
ROM
Part (Kbytes)
Z87100
1
Note: *General-Purpose
RAM*
(Bytes)
124
Package
Information
18-pin DIP & SOIC
s 3.0V to 5.5V Operating Range
s On-Chip PN Modulator for Spread Spectrum
Communications
s ROM-Programmable PN Codes, up to 256 Bits ("Chips")
s Fast Instruction Pointer - 1.0 µs @ 12 MHz
s Two Standby Modes - STOP and HALT
s 12 Input/Output Lines (One with Comparator Input)
s Two Programmable 8-Bit Counter/Timers
s 6-Bit Programmable Prescaler
s Six Vectored, Priority Interrupts (Two External, One
Software Generated)
s Maximum Clock Speed of 12 MHz
s Watch-Dog/Power-On Reset Timer
s Analog Comparator with Programmable Interrupt
Polarity
s On-Chip Oscillator that Accepts a RC, or External Clock
Drive
s Low EMI Noise Mode
s 0° to +70°C Ultra-Low Power Operation at 10 kHz
GENERAL DESCRIPTION
The Z87100 Wireless Controller is a member of the Z8^®
single-chip microcontroller family and is manufactured in
CMOS technology. Zilog’s CMOS Z87100 microcontroller
offers fast execution, efficient use of memory, sophisticat-
ed interrupts, input/output bit manipulation capabilities,
and easy hardware/software system expansion along with
low cost and low power consumption.
The Z87100 architecture is based on Zilog’s 8-bit micro-
controller core with the addition of an Expanded Register
File which allows access to register mapped peripheral
and I/O circuits. The Z87100 offers a flexible I/O scheme
and a number of ancillary features that are useful in many
consumer, industrial, automotive, and advanced scientific
applications.
The Z87100 is designed with specific features for wireless
spread spectrum applications using direct sequence pseu-
do-noise (PN) modulation. With up to 256 bits (“chips”) of
specially designated “PN ROM”, one or more PN code se-
quences may be stored and used to PN-modulate data
generated by the Z87100. PN modulation is synchronous
with the data, using an integer number of PN chips per data
bit.
The Z87100 features an Internal Time Base Counter which
provides a real time clock for Stop-Mode Recovery or inter-
rupt at programmable intervals of 0.25 seconds, one sec-
ond, one minute and one hour. This requires an external
clock oscillator signal at 32.768 kHz.
Special PN modulator control registers allow the user to
select the desired PN modulator outputs, to choose the PN
clock source and PN sequence start address in PN ROM,
to stop/start and enable/disable the PN modulator, and to
determine whether a complete PN code sequence is mod-
ulated against a single bit or an integer fraction or multiple
of a single bit. The PN-modulated data may then be used
DS96WRL0700
PRELIMINARY
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