Working Voltage (V) | Max.CPU Speed (MHz) | ROM (Word) | RAM (Nibble) | I/O | Audio Output (PWM) | H/W Channel (SPU) | Volume Control | CPU CLK OSC. ROSC (Option) | LVR | OTP |
---|---|---|---|---|---|---|---|---|---|---|
2.0~5.5 | 2 | 128K | 256 | 16 | V | 4 | V | - | V | - |
GPC74C, a 4-bit sound controller, is architected with a four-channel SPU for MIDI playback, a 4-bit RISC CPU, a 14-bit PWM, 8/16 IOs and 1 input pin (with pull low resistor ) , 256-nibble RAM, and embedded ROM with density of 32K/ 64K/ 96K/ 128K/ 160K/ 340K/ 680K x 12-bit of memory space. The operating voltage ranges from 2.0V through 5.5V and operating speed is 1M/2MHz, configurable through inner oscillator. Other features include Low Voltage Reset, IR carry output, Watchdog, five interrupt sources with two time-bases, etc.