描述 Description

The GPFA64D1, a fully CMOS integrated circuit, adopts advanced design and process technology to combine an 8-bit RISC processor, an 8-channel music synthesizer, 64K bytes program ROM, 224 bytes working SRAM, timer/counter and I/Os interface in a single chip.? The sound processing logic is a unique design to achieve high quality melody effect.? It can simulate all types of musical instruments by programming the tone ROM and controlling the envelope slope of each channel.? Every channel can also be defined as a speech channel to provide percussion, animal sounds, gun-fire, explosions and other special sound effects in PCM to accompany the main music rhythm.

特性 Features

? 8-bit microprocessor
? 8-channel speech / melody
? Operating voltage: 2.2V - 5.5V
? Four general inputs / outputs, IOAB0~3
? Four input pins, IOCD2 and IOEF0~2
? Two audio output pins drive speaker directly
? Watchdog mode (code option)
? 224 bytes SRAM
? 64K bytes program ROM
? Power down mode with system and auto wake-up clock stop
? Halt mode with system clock stop, but keeping auto-wakeup clock working
? Built-in max. 14.318MHz ROSC
? Power-on reset
? Volume adjustment by 3-bit software control or external resistor
? Key-change and system auto wakeup capability
? Low voltage reset