The GPRC12A, a two-channel speech/melody
synthesizer, equips an 8-bit CMOS microprocessor with
69 instructions, 12K-byte OTP-EPROM for speech and melody
data (speech compressed by a 4-bit ADPCM with approx.
three seconds speech duration @ 6.0KHz sampling rate),
64-byte working SRAM Other primary features include
two Timer/Counters, 8 Software Selectable I/Os, and
one 8-bit current D/A output. In audio processing, melody
and speech can be mixed into one output. It operates
at a wide voltage range of 2.4V - 5.5V with a Low Voltage
Reset function that automatically resets CPU when operating
voltage is less than 2.2V. Plus, a Clock Stop mode is
built in for power savings. The unique power saving
mode saves the RAM contents, but freezes the oscillator
to stop executing other functions. The maximum CPU frequency
can run up to 6.0MHz and the instruction cycle is two
clock cycles (min.) ~ six clock cycles (max.). The GPRC12A
loads, not only the latest technology, but also the
full commitment and technical support of Generalplus.
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