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 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 I/O Function Description P20 I/O Bit0 of I/O port 2 P21 I/O Bit1 of I/O port 2 P22 I/O Bit2 of I/O port 2 P23 I/O Bit3 of I/O port 2 P30 I/O Bit0 of I/O port 3 P31 I/O Bit1 of I/O port 3 P32 I/O Bit2 of I/O port 3 P33 I/O Bit3 of I/O port 3 VDD I Positive power supply OSC I Oscillation component connection pin GND I Negative power supply BUO1/VO O PWM output 1 / DA current output BUO2 O PWM output 2 2 December 20, 2000 SN65031 Two Channels Direct Drive Speech Controller ABSOLUTE MAXIMUM RATINGS Items Supply Voltage Input Voltage Operating Temperature Symbol Min Max Unit. VDD-V -0.3 6.0 V VIN GND-0.3 VDD+0.3 TOP Storage Temperature -20.0 TSTG -55.0 V 70.0 o 125.0 o C C ELECTRICAL CHARACTERISTICS Item Sym. Min. Typ. Max. Unit Condition Operating Voltage VDD Standby current ISBY Operating Current IOPR Input current of P2, P3 IIH Drive current of P2, P3 IOD Sink Current of P2, P3 IOS Drive current of Buo1 IOD Sink Current of Buo1 IOS 2.4 1.5 2.0 100 100 3.0 3.0 2 3 120 120 5.1 2.0 250 10.0 - V uA uA uA mA mA mA mA VDD=3V, no load VDD=3V, no load VDD=3V,VIN=3V VDD=3V,VO=2.4V VDD=3V,VO=0.4V VDD=3V,Buo1=1.5V VDD=3V,Buo1=1.5V Drive Current of Buo2 Sink Current of Buo2 Output current of VO Oscillation Freq. 100 100 2.0 - 120 120 3.0 1.0 4.0 - mA mA mA MHz VDD=3V,Buo2=1.5V VDD=3V,Buo2=1.5V VDD=3V,VO=0.7V VDD=3V IOD IOS Ivo FOSC 3 December 20, 2000 SN65031 Two Channels Direct Drive Speech Controller APPLICATION CIRCUIT PWM Direct Drive Output SN65031 Note: Please bonds all of VDD and VSS pins. 4 December 20, 2000 SN65031 Two Channels Direct Drive Speech Controller Fixed current D/A output SN65031 Note: Please bonds all of VDD and VSS pins. 5 December 20, 2000 SN65031 Two Channels Direct Drive Speech Controller BONDING PAD SN65031 Note: The substrate MUST be connected to Vss in PCB layout. 6 December 20, 2000 SN65031 Two Channels Direct Drive Speech Controller DISCLAIMER The information appearing in SONiX web pages (“this publication”) is believed to be accurate. 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Applications involving unusual environmental or reliability requirements, e.g. military equipment or medical life support equipment, are specifically not recommended without additional processing by SONIX for such application. 7 December 20, 2000