rsc-164 ETC-unknow, rsc-164 Datasheet - Page 6

• Manufacturer Part Number: rsc-164
• Description: General Purpose Microcontroller Featuring Speech Recognition, Speech & Music Synthesis, Speaker Verification And Audio Record/playback
• Manufacturer: ETC-unknow

RSC-164
Oscillator #2
Oscillator #1 works with an external crystal, a ceramic
resonator or LC. Use of Oscillator #2 requires a crystal
for precision timing.
CLOCK
The RSC-164 uses a fully static core – the processor can
be stopped (by removing the clock source) and restarted
without causing a reset or losing contents of internal
registers. Static operation is guaranteed from DC to
14.32 MHz.
Typically the processor clock runs from a 14.32 MHz
crystal with no divisor and one wait state. This creates
internal RAM cycles of 70 nsec duration and internal
ROM or external cycles of 140 nsec duration. Careful
design of external decoding logic and close analysis of
gate delays may allow operation with memories having
access times as slow as 120 nsec.
TIMERS/COUNTERS
The two independent oscillators of the RSC-164 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
The RSC-164 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:
ANALOG OUTPUT
The RSC-164 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.
output can directly drive a 32 ohm speaker.
6
Positive edge on Port 0, bit 0
Overflow of Timer 1
Overflow of Timer 2
Sensory reserved functions
Completion of PWM sample period
Pins XI2 and XO2
32768 Hz (3.5V-5.0V)
From the Interactive Speech™ Line of Products
The PWM
PACKAGING
The RSC-164 can be purchased as bare unpackaged die
or packaged in 68-pin PLCC, 64-pin QFP packages, or
68- pin COB.
DATA SHEET