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SN69040
LCD Controller with Voice/Dual Tone Melody
INTRODUCTION
SN69040 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 SN69040 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
Version.1.01
1
September 26, 2002
SN69040
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 I/O O O I I I O I/O O O Function Description segment 1~24 for LCD driver Optional to be SEG25-SEG28 or P53-P50 SEG25-28: segment25~28 for LCD driver. P53-P50: Bit3-bit0 for output port 5. Optional to be SEG29~SEG32 or P43-P40 SEG29~32: segment29~32 for LCD driver. P43~P40: Bit3-bit0 for output port 4. Com1-Com4 for LCD driver. Negative power supply. Bit 3 to bit 0 of IO port 3. Bit 3 to bit 0 of IO port 2. Buzzer driver outputs. D/A current output. Reset pin with internal pull low. Oscillation component connection pin. For testing only. 32768 Hz Crystal connection pins. Positive power supply.
Version.1.01
2
September 26, 2002
SN69040
LCD Controller with Voice/Dual Tone Melody
ABSOLUTELY MAXIMUM RATING
Items Supply Voltage Input Voltage Operating Temperature Storage Temperature TSTG -55.0 125.0
o
Symbol VDD-V VIN TOP
Min -0.3 VSS-0.3 -20.0
Max 6.0 VDD+0.3 70.0
Unit. V V
o
C C
ELECTRICAL CHARACTERISTIC
Item Sym. Min. Typ. Max. Unit Condition Operating Voltage VDD 2.4 3.0 5.1 V Standby current 1 ISBY1 1.0 uA VDD=3V,both system clk and 32768 Hz clk are off Standby current 2 ISBY2 20 50 uA VDD=3V, system clk is off, 32768 Hz clk is on for LCD display and timer. Operating Current IOPR 350 500 uA VDD=3V, no load Input current IIH 3.0 10.0 uA VDD=3V,VIN=3V of ,P2,P3 Drive current of IOD -1.5 -2 mA VDD=3V,VO=2.6V P2,P3,P4,P5 large Sink current IOS1 2.0 3 mA VDD=3V,VO=0.4V of P2,P3,P4,P5 Small Sink current IOS2 0.4 uA VDD=3V,VO=0.4V of P2,P3,P4,P5 D/A output current IVO 2.0 3.0 4.0 mA VDD=3V,VO=0.7V Buzzer drive IBZD -15 mA VDD=3V,VO=1.5V current Buzzer sink current IBZS 15 mA VDD=3V,VO=1.5V Oscillation resistor R 1.0 MHz VDD=3V Oscillation Freq. FOSC 1.0 MHz VDD=3V
Version.1.01
3
September 26, 2002
SN69040
LCD Controller with Voice/Dual Tone Melody
BONDING PAD
SN69040
Note: The substrate MUST be connected to Vss in PCB layout.
Version.1.01
4
September 26, 2002
SN69040
LCD Controller with Voice/Dual Tone Melody
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Version.1.01
5
September 26, 2002

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