SN65031

SN65031 Two Channels Direct Drive Speech Controller „ INTRODUCTION SN65031 is a 31 seconds two-channel single chip voice synthesizer IC which contains a PWM Direct Drive Circuit and fixed current D/A output. There are two 4-bit I/O ports and built in a tiny controller. By programming through the tiny controller, user’s applications including section combination, trigger modes, output status, and other logic functions can be easily implemented. „ FEATURES Š Š Š Š Š Š Š Š Š Š Š Š Š Single power supply 2.4V – 5.1V 31 seconds voice capacity is provided Built in a tiny controller Two 4-bit I/O ports are provided 64*4 bits RAM are provided Maximum 16k program ROM is provided Readable ROM code data Built in a high quality speech synthesizer Adaptive playing speed from 2.5k-20kHz is provided Two independent voice channels (Channel 1 + Channel 2→Buo1,Buo2) Built in a PWM Direct Drive circuit and a fixed current D/A output Low Voltage Reset System clock : 2MHZ 1 December 20, 2000 SN65031 Two Channels Direct Drive Speech Controller „ PIN ASSIGNMENT Symbol P20 P21 P22 P23 P30 P31 P32 P33 VDD OSC GND BUO1/VO BUO2 I/O I/O I/O I/O I/O I/O I/O I/O I/O I I I O O Function Description Bit0 of I/O port 2 Bit1 of I/O port 2 Bit2 of I/O port 2 Bit3 of I/O port 2 Bit0 of I/O port 3 Bit1 of I/O port 3 Bit2 of I/O port 3 Bit3 of I/O port 3 Positive power supply Oscillation component connection pin Negative power supply PWM output 1 / DA current output PWM output 2 2 December 20, 2000 SN65031...