SN69040B Datasheet, PDF (1/5 Pages) SONiX Technology Company – LCD Controller with Voice/Dual Tone Melody

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
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
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February 15, 2006