|Working Voltage (V)||Max.CPU Speed (MHz)||ROM Type||Built-in ROM (Byte)||RAM (Byte)||I/O||Audio Output (DAC)||H/W MIDI Channel (SPU)||CPU CLK OSC. ROSC||CPU CLK OSC. X'TAL||WDT||LVR||ADC||SPI||SIO||High Sink Current I/O|
|2.4~5.5||7.159||Mask||256K||512||24||12 bit x 1 Channel||8||V||V||V||V||-||-||-||8 bit|
The GPCH8256B embedded with an 8-bit processor, 256K bytes ROM chip, 512 bytes working SRAM, 3 sets of 12-bit timers, 24 general I/Os, and 1 set of 12-bit DAC. The microprocessor can implement software based on audio processing, functional control and others. For audio processing, melody and speech can be mixed into one output. The GPCH8256B implement a high performance SPU voice engine to achieve 8 channel voice with ADPCM/PCM. It operates over a wide voltage range from 2.4V through 5.5V, and it includes a Low Voltage Reset to assure system operating appropriately under low voltage condition. In addition, GPCH8256B provides sleep mode for power savings. It can be awaken from sleep mode by external interrupt source or by IOA's state change.