描述 Description

The GPC41C is a CPU based two-channel speech/melody synthesizer including CMOS 8-bit microprocessor with 69 instructions, 40K-byte ROM for speech and melody data (Speech is compressed by a 4-bit ADPCM with approx. 13 sec speech duration @ 6KHz sampling rate) and 128-byte working SRAM. It includes two Timer/Counters, 16 Software Selectable I/Os, and one PWM direct drive audio output. It operates over a wide voltage range from 1.9V to 5.5V and includes Low Voltage Reset function that automatically resets system when the working voltage VDD drops too low and causes malfunction state. In addition, GPC41C has a Clock Stop mode for power savings. The power saving mode saves the RAM contents, but freezes the oscillator, causing all other chip functions to be inoperative. The system/CPU clock source comes from built-in internal oscillator and it can be either 3.58MHz or 6MHz depending on mask code option. CPU clock has an Instruction Cycle Rate of 2 clock cycles (min.) - 6 clock cycles (max.). The GPC41C includes, not only the latest technology, but also the full commitment and technical support of Generalplus.

特性 Features

? 8-bit microprocessor
? 40K-byte ROM for program and audio data
? 128-byte working SRAM
? Software-based audio processing
? Wide operating voltage: 1.9V - 5.5V @ 3.58MHz 3.6V - 5.5V @ 6.0MHz
? Built-in internal oscillator of 3.58MHz or 6.0MHz for system/CPU clock source(frequency depends on mask code option)
? Max. CPU clock: 3.58MHz @ 1.9V - 5.5V 6.0MHz @ 3.6V - 5.5V
? Standby mode (Clock Stop mode) for power savings. Max. 2μA @ 5.0V
? 560ns instruction cycle time @ 3.58MHz CPU clock
? 16 general I/Os
? Two 12-bit timer/counters
? 6 INT sources
? Key wake-up function
? Approx. 13 sec speech @ 6KHz sampling rate with 4-bit ADPCM
? PWM directly drive audio output
? Low Voltage Reset