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SN6A296
LCD Controller with Voice/Dual Tone Melody
INTRODUCTION
SN6A296 is a series of single chip voice/dual tone melody synthesizer IC with
16*33/8*40/4*40 direct drive capability which contains two 4-bit I/O ports and a tiny
controller. By programming through the tiny controller, user’s application 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 – 5.1V
Built in a tiny controller
Two 4-bit I/O ports are provided, two optional 4-bit output ports are provided
256*4 bits RAM for programming usage are provided
160*4 bits RAM for LCD display usage are provided
Maximum 108k*10 program ROM is provided
Readable ROM code data
Built in direct 16*33/8*40/4*40 LCD driver
LCD 1/4 bias, 1/5 bias; 1/8 duty, 1/16 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 SN6A296 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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LCD Controller with Voice/Dual Tone Melody
PIN ASSIGNMENT
Symbol I/O Function Description
SEG1-SEG4 O Optional to be segment1~4 or P40~P43
SEG1~4: segment1~4 for LCD driver.
P40~P43: bit0-bit3 for output port 4.
SEG5-SEG8 O Optional to be segment5~8 or P50~P53
SEG5~8: segment5~8 for LCD driver.
P50~P53: bit0-bit3 for output port 5.
SEG9-SEG33 O Segment 9 ~ segment 33 for LCD driver
SN6A296
SEG34/COM16-
SEG40/COM10
COM9 O Com9 for 16*33 LCD driver.
COM8-COM1 O Com8-Com1 for 16*33/8*40/4*40 LCD driver.
GND I Negative power supply.
P33-P30 I/O Bit 3 to bit 0 of IO port 3.
P23-P20 I/O Bit 3 to bit 0 of IO port 2.
BU1,BU2 O Buzzer driver outputs.
VO O D/A current output.
RESET I Reset pin with internal pull low.
OSC I Oscillation component connection pin.
TEST I For testing only.
O Optional to be SEG34~40 or COM16~10
SEG34~40: segment34~40 for 8*40/4*40 LCD
driver.
COM16-10: com16~com10 for 16*33 LCD driver.
XIN,XOUT 32768 Hz Crystal connection pins.
VDD I Positive power supply.
VLCDR LCD voltage adjusting pin.
VLC1-VLC5 LCD voltage bias connection pins.
WSUB I Well substrate of chip. Connected to the highest
voltage of chip (VDD or VLCDR).
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LCD Controller with Voice/Dual Tone Melody
ABSOLUTELY MAXIMUM RATING
Items Symbol Min Max Unit.
Supply Voltage VDD-V -0.3 6.0 V
Input Voltage VIN VSS-0.3 VDD+0.3 V
Operating Temperature TOP -20.0 70.0 oC
SN6A296
Storage Temperature T
STG
ELECTRICAL CHARACTERISTIC
Item Sym. Min. Typ. Max. Unit Condition
Operating
Voltage
Standby current 1 I
Standby current 2 I
Operating
current
Input current
of ,P2,P3
Drive current
of P2,P3,P4,P5
large Sink current
of P2,P3,P4,P5
Small Sink current
of P2,P3,P4,P5
D/A output current IVO 2.0 3.0 4.0 mA VDD=3V,VO=0.7V
Buzzer drive
current
Buzzer sink
current
Oscillation resistor R - 1.0 - MHZ VDD=3V
Oscillation Freq. F
VDD 2.4 3.0 5.1 V
- - 1.0 uA VDD=3V,both system clk
SBY1
- 20 50 uA VDD=3V, system clk is off,
SBY2
I
- 350 500 uA VDD=3V, no load
OPR
IIH - 3.0 10.0 uA VDD=3V,VIN=3V
IOD -1.5 -2 - mA VDD=3V,VO=2.6V
I
2.0 3 - mA VDD=3V,VO=0.4V
OS1
I
- 0.4 - uA VDD=3V,VO=0.4V
OS2
I
-15 mA VDD=3V,VO=1.5V
BZD
I
15 mA VDD=3V,VO=1.5V
BZS
- 1.0 - MHZ VDD=3V
OSC
-55.0 125.0 oC
and 32768 Hz clk are off
32768 Hz clk is on for LCD
display and timer.
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BONDING PAD
SN6A296
LCD Controller with Voice/Dual Tone Melody
SN6A296
Note: The substrate MUST be connected to Vss in PCB layout.
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SN6A296
LCD Controller with Voice/Dual Tone Melody
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The application circuits illustrated in this document are for reference purposes only.
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equipment or medical life support equipment, are specifically not recommended
without additional processing by SONIX for such application.
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