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
Version: 1.01
September 26, 2002
1
SN6A296
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
SEG34/COM16-
SEG40/COM10
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.
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.
XIN,XOUT
32768 Hz Crystal connection pins.
V
DD
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).
Version: 1.01
September 26, 2002
2
SN6A296
LCD Controller with Voice/Dual Tone Melody
ABSOLUTELY MAXIMUM RATING
Items
Symbol
Min
Max
Unit.
Supply Voltage
V
DD
-V -0.3 6.0
V
Input Voltage
V
IN
V
SS
-0.3 V
DD
+0.3 V
Operating Temperature
T
OP
-20.0 70.0
o
C
Storage Temperature
T
STG
-55.0 125.0
o
C
ELECTRICAL CHARACTERISTIC
Item
Sym. Min. Typ. Max. Unit
Condition
Operating
Voltage
V
DD
2.4 3.0 5.1 V
Standby current 1 I
SBY1
- - 1.0 uA V
DD
=3V,both system clk
and 32768 Hz clk are off
Standby current 2 I
SBY2
- 20 50 uA V
DD
=3V, system clk is off,
32768 Hz clk is on for LCD
display and timer.
Operating
current
I
OPR
- 350
500 uA V
DD
=3V, no load
Input current
of ,P2,P3
I
IH
- 3.0
10.0
uA V
DD
=3V,V
IN
=3V
Drive current
of P2,P3,P4,P5
I
OD
-1.5 -2 - mA V
DD
=3V,V
O
=2.6V
large Sink current
of P2,P3,P4,P5
I
OS1
2.0 3 - mA V
DD
=3V,V
O
=0.4V
Small Sink current
of P2,P3,P4,P5
I
OS2
- 0.4 - uA V
DD
=3V,V
O
=0.4V
D/A output current I
VO
2.0 3.0 4.0 mA V
DD
=3V,V
O
=0.7V
Buzzer drive
current
I
BZD
-15 mA V
DD
=3V,V
O
=1.5V
Buzzer sink
current
I
BZS
15 mA V
DD
=3V,V
O
=1.5V
Oscillation resistor R
-
1.0
-
MHZ V
DD
=3V
Oscillation Freq. F
OSC
-
1.0 - MHZ
V
DD
=3V
Version: 1.01
September 26, 2002
3
SN6A296
LCD Controller with Voice/Dual Tone Melody
BONDING PAD
SN6A296
Note: The substrate MUST be connected to Vss in PCB layout.
Version: 1.01
September 26, 2002
4
SN6A296
LCD Controller with Voice/Dual Tone Melody
Version: 1.01
September 26, 2002
5
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