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 ...

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