SN69040B中文資料松翰科技數(shù)據(jù)手冊(cè)PDF規(guī)格書

INTRODUCTION

SN69040B is a single chip voice/dual tone melody synthesizer IC with 4*32 LCD direct drive capability which contains two 4-bit I/O ports, two optional 4-bit output ports and a tiny controller. By programming through the tiny controller, user’s applications including LCD display, section combination, trigger modes, output status, voice/melody playing and other logic functions and then be easily implemented.

FEATURES

? Single power supply 2.4V - 5V

? Built in a tiny controller

? Two 4-bit I/O ports and two optional 4-bit output ports are provided

? Built in 40K*10 ROM

? 256*4 bits RAM for programming usage are provided

? 32*4 bits RAM for LCD display usage are provided

? Maximum 16k program ROM is provided

? Readable ROM code data

? Built in direct 4*32 LCD driver

? LCD 1/3 bias, 1/4 duty

? Built in a high quality speech synthesizer

? Adaptive playing speed from 2.5k-40kHz is provided

? Built in a dual tone melody generator

? Speech/Dual tone melody mixer is provided which SN69040B can play speech and dual tone melody simultaneously

? Fixed current D/A output is provided to drive external connected transistor for sound output

? PWM output is provided to drive external connected piezo buzzer