Products - GPC74340B

General Description

GPC74170B, a 4-bit architecture sound controller, is embedded with a 4-channel SPU which supports MIDI playing, 4-bit RISC CPU, 14-bit PWM, 8 IOs, RAM with 256 nibbles, ROM with 64Kx12-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.

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~IOB Operating Voltage: 2.0V - 5.5V
• 256 nibbles SRAM
• 14-bit PWM driver for driving speaker directly
• 64Kx12-bit ROM
• Standby mode for power savings
• Five interrupt sources with two TimeBases
• 4-channel Sound Processing Unit (SPU) supports MIDI playing
• 8 general I/Os (bit programmable)
• Key wakeup function (IOA~IOB for 8 IO)
• Low voltage reset
• Watchdog