描述 Description

GPC74P048A, a 4-bit architecture sound controller, is embedded with a 4-channel SPU which supports MIDI playing, 4-bit RISC CPU, 14-bit PWM, 16 IOs, RAM with 256 nibbles, ROM with 96Kx12-bit. The operating voltage ranges from 2.0V through 5.5V and the CPU operating speed is 1M/2MHz, optional by inner oscillator. Other features include Low Voltage Reset, IR carry output, Watchdog, 5 interrupt sources with two TimeBases, etc.

特性 Features

? 4-bit RISC CPU
? CPU Clock: 1M/2M Hz, System clock: 8MHz
? Operating Voltage: 2.0V - 5.5V
? Regulator built-in with input voltage: 2.0~5.5V, output voltage: 2.0~3.0V
? IO IOA~IOD Operating Voltage: 2.0V - 5.5V
? 256 nibbles SRAM
? 14-bit PWM driver for driving speaker directly
? 160Kx12-bit ROM
? Standby mode for power savings
? Five interrupt sources with two TimeBases
? 4-channel Sound Processing Unit (SPU) supports MIDI playing
? 16 general I/Os (bit programmable)
? Key wakeup function (IOA~IOD for 16 IO)
? Low voltage reset
? Watchdog