arithmetic, 9 immediate arithmetic, and 6 miscellaneous
instructions. All instructions are 3 bytes or fewer, and no
instruction requires more than 8 clock cycles to execute.
The two independent oscillators of the RSC-164i provide
counts to two internal timers. Each of the two timers
consists of an 8-bit reload value register and an 8-bit up-
counter. The reload register is readable and writeable by
the processor.
INTERRUPTS
GENERAL PURPOSE I/O
The RSC-164i has 12 general purpose I/O pins (P0.0-
P0.7, P1.0-P1.3). Each pin can be programmed as an
input with weak pull-up (~400kΩ equivalent device);
input with strong pull-up (~10kΩ equivalent device);
input without pull-up, or as an output. This is
accomplished by having 24 bits of configuration registers
for the I/O pins (Port Control Register A and Port
Control Register B for ports 0 and 1).
The RSC-164i allows for five interrupt sources, as
selected by software. Each has its own mask bit and
request bit in the IMR and IRQ registers respectively.
The following events can generate interrupts:
•
•
•
•
•
Positive edge on Port 0, bit 0
Overflow of Timer 1
Overflow of Timer 2
Sensory reserved functions
Completion of PWM sample period
EXTERNAL MEMORY
The RSC-164i can connect serially through two I/O lines
to a serial EEPROM for applications with low data
storage and low access speed requirements. Speaker-
dependent and speaker verification can therefore be
performed on the RSC-164i with such external memory.
ANALOG OUTPUT
The RSC-164i offers two separate options for analog
output. The DAC (Digital to Analog Converter) output
provides a general purpose 10-bit analog output that may
be used for speech output (with the inclusion of an audio
amplifier), or other purposes requiring an analog
waveform. For speech applications that require driving a
small speaker, the PWM (Pulse-Width Modulator) output
can be used instead of the DAC output. The PWM
output can directly drive a 32 ohm speaker.
OSCILLATORS
Two independent oscillators in the RSC-164i provide a
high-frequency clock and a 32kHz time-keeping clock.
The oscillator characteristics are as follows:
Oscillator #1:
Pins XI1, XO1
From the
Interactive Speech™
Line of Products
RSC-164i
DATA SHEET
ABSOLUTE MAXIMUM RATINGS
Any pin to GND
Operating temperature (T
O
)
Soldering temperature
Power dissipation
Operating Conditions
-0.1V to +7.5V
0°C to +70°C
260°C for 10 sec
TBD
0°C to +70°C;
VDD=3.5-5.0V;
VSS=0V
WARNING:
Stressing the RSC-164i beyond the
“Absolute Maximum Ratings” may cause permanent
damage. These are stress ratings only. Operation
beyond the “Operating Conditions” is not
recommended and extended exposure beyond the
“Operating Conditions” may affect device
reliability.
THE INTERACTIVE SPEECH™ PRODUCT LINE
The Interactive Speech line of ICs was developed to
“bring life to products”
through advanced speech and audio technology.
These chips allow products to think, talk, hear and play music. The Interactive Speech chips were designed for consumer
telephony products and cost-sensitive consumer electronic applications such as home electronics, personal security, and
personal communication. The product line includes general purpose microcontrollers (RSC-164, RSC-164i, RSC-132i) and
application specific standard speech ASSPs (Voice Password™ and Voice Direct™).
RSC-164
The RSC-164 is a low-cost 8-bit microcontroller designed for use in consumer electronics. It is a
fully integrated microcontroller and includes A/D, D/A, ROM, and RAM circuitry on chip. The
RSC-164 can perform a full range of speech/audio functions including speech recognition,
speaker verification, speech and music synthesis, and voice record/playback.
RSC-132i
The RSC-132i, the lowest cost member of the RSC series, is a speech enabled microcontroller designed specifically for the toy
industry. The RSC-132i can support various combinations of speech technologies. The RSC-132i combines an 8-bit
microcontroller with high quality speaker-independent and speaker-dependent speech recognition, speech synthesis, and
speaker verification. This chips has 32 kBytes of ROM and limited I/O pins
Voice Password™ ASSP
The Voice Password™ ASSP provides consumer products with low cost biometric security. The chip lets products “lock out”
unauthorized access by verifying key words and/or voices. Using text dependent speaker verification technology, Voice
Password can secure products at a variety of security thresholds for many different applications.
Voice Direct™ ASSP
The Voice Direct™ ASSP provides cost-sensitive products with speaker-dependent speech recognition, speech synthesis and
DTMF tone generation. This easy-to-use, pin-configurable chip requires no custom programming and can recognize up to 60
trained words. The Voice Direct™ ASSP is most ideal for consumer telephony products which feature voice dialing.
IMPORTANT NOTICES
Sensory reserves the right to make changes to or to discontinue any product or service identified in this publication at any time without notice in order to improve design and supply the best
possible product. Sensory does not assume responsibility for use of any circuitry other than circuitry entirely embodied in a Sensory product. Information contained herein is provided
gratuitously and without liability to any user. Reasonable efforts have been made to verify the accuracy of this information but no guarantee whatsoever is given as to the accuracy or as to its
applicability to particular uses.
Applications described in this data sheet are for illustrative purposes only, and Sensory makes no warranties or representations that the RSC series of products will be suitable for such
applications. In every instance, it must be the responsibility of the user to determine the suitability of the products for each application. Sensory products are not authorized for use as critical
components in life support devices or systems.
Sensory conveys no license or title, either expressed or implied, under any patent, copyright, or mask work right to the RSC series of products, and Sensory makes balance between
recognition and synthesis no warranties or representations that the RSC series of products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
Sensory is registered by the U.S. Patent and Trademark Office.
All other trademarks or registered trademarks are the property
of their respective owners.
From the
Interactive Speech™
Line of Products
DATA SHEET
RSC-164i
Nothing contained herein shall be construed as a recommendation to use any product in violation of existing patents or other rights of third parties. The sale of any Sensory product is subject
to all Sensory Terms and Conditions of Sales and Sales Policies.
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