SN69040B

SN69040B LCD Controller with Voice/Dual Tone Melody 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 www.DataSheet4U.com 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 Ver 1.1 1 February 15, 2006 SN69040B LCD Controller with Voice/Dual Tone Melody PIN ASSIGNMENT Symbol SEG1-SEG24 SEG25/P53-SE G28/P50 SEG29/P43-SE G32/P40 COM1-COM4 GND P33-P30 P23-P20 BU1,BU2 VO RST OSC TEST XIN,XOUT VDD I O I I/O ...