GPCH8256B中文资料8-Channel Sound Controller数据手册Generalplus规格书

描述 Description

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.

特性 Features

• Working Voltage: 2.4V - 5.5V
• CPU Speed: 7.159MHz.
• FOSC = 14.318MHz (2 x CPU clock)
• ROM Size: 256K bytes
• RAM Size: 512 bytes. (Programmable RAM 384 bytes)
• Three 12-bit timers/counters, TMA/TMB/TMC (Programmable and Auto Reload)
• Sleep mode to reduce power
• Key change wake up function
• 10 IRQs & 6 NMI Interrupts
• Watchdog Function
• Low Voltage Reset Function
• 24 general I/Os, including 8 general/special I/Os (All bit programmable)
• 8-bit I/O with high sink current(20mA) for LED application
• IOA with 1M pull low function to prevent current leakage from error key touch
• One 12-bit DAC outputs (D/A output: 4mA/channel)
• SPU (Sound Processing Unit) engine can output audio data of 15-bit resolution with 12-bit DAC to perform high quality sound
• IR PWM Output
• 8-channel SPU engine with ADPCM/PCM wave table
• Tone color (Speech) with ADPCM algorithm to save memory usage