The GPRC11A, a two-channel speech/melody synthesizer, equips an 8-bit CMOS microprocessor with 69 instructions, 12K-byte ROM 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 and built-in amplifier. 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 1.3V/2.7V. 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 GPRC11A loads, not only the latest technology, but also the full commitment and technical support of Generalplus.

• 8-bit microprocessor
• 12K-byte ROM for program and audio data
• 64-byte working SRAM
• Built-in 2 inverter amplifier
• Software-based audio processing
• Wide operating voltage: 2.4V - 5.5V @ 4.0MHz
  • 3.6V - 5.5V @ 6.0MHz
• Supports ROSC only
• Max. CPU clock: 4.0MHz @ 3.0V, 6.0MHz @ 5.0V
• Standby mode (Clock Stop mode) for power savings.
  • Max. 2µA @ 5.0V
• 500ns instruction cycle time @ 4.0MHz CPU clock
• Eight general I/Os
• Two 12-bit timer/counters
• Six INT sources
• Key wake -up function
• Approx. 3-sec speech @ 6.0KHz sampling rate with ADPCM
• One D/A output
• Low Voltage Reset