SN6A264
LCD Controller with Voice/Dual Tone Melody
INTRODUCTION
SN6A264 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 64k*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 SN6A264 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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February 1, 2001
SN6A264
LCD Controller with Voice/Dual Tone Melody
PIN ASSIGNMENT
Symbol
SEG1/P40 ~
SEG4/P43
I/O
O
Function Description
Optional to be segment1~4 or P40~P43
SEG1~4: segment1~4 for LCD driver.
P40~P43: bit0-bit3 for output port 4.
SEG5/P50 ~
SEG8/P53
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
SEG34/COM16-
SEG40/COM10
O
O
Segment 9 ~ 33 for LCD driver
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
COM8-COM1
GND
P33-P30
P23-P20
BU1,BU2
VO
RESET
OSC
TEST
XIN,XOUT
V
DD
VLCDR
VLC1-VLC5
WSUB
I
I
O
O
I
I/O
I/O
O
O
I
I
I
Com9 for 16*33 LCD driver.
Com8-Com1 for 16*33/8*40/4*40 LCD driver.
Negative power supply.
Bit 3 to bit 0 of I/O port 3.
Bit 3 to bit 0 of I/O 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.
LCD voltage adjusting pin.
LCD voltage bias connection pins.
Well substrate of chip. Connected to the highest
voltage of chip (VDD or VLCDR).
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February 1, 2001
SN6A264
LCD Controller with Voice/Dual Tone Melody
ABSOLUTELY MAXIMUM RATING
Items
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Symbol
V
DD
-V
V
IN
T
OP
T
STG
Min
-0.3
V
SS
-0.3
-20.0
-55.0
Max
6.0
V
DD
+0.3
70.0
125.0
Unit.
V
V
o
o
C
C
ELECTRICAL CHARACTERISTIC
Item
Sym. Min. Typ. Max. Unit
Condition
Operating
V
DD
2.4 3.0 5.1
V
Voltage
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
I
OPR
-
350 500
uA
V
DD
=3V, no load
current
Input current of
I
IH
-
3.0 10.0
uA
V
DD
=3V,V
IN
=3V
,P2,P3
Drive current
I
OD
-1.5
-2
-
mA
V
DD
=3V,V
O
=2.6V
of P2,P3,P4,P5
large Sink current I
OS1
2.0
3
-
mA
V
DD
=3V,V
O
=0.4V
of P2,P3,P4,P5
Small Sink current I
OS2
-
0.4
-
uA
V
DD
=3V,V
O
=0.4V
of P2,P3,P4,P5
D/A output current I
VO
2.0 3.0 4.0
mA
V
DD
=3V,V
O
=0.7V
Buzzer drive
I
BZD
-15
mA
V
DD
=3V,V
O
=1.5V
current
Buzzer sink
I
BZS
15
mA
V
DD
=3V,V
O
=1.5V
current
Oscillation
R
-
1.0
-
MHZ
V
DD
=3V
resistor
Oscillation Freq. F
OSC
-
1.0
-
MHZ V
DD
=3V
3
February 1, 2001
SN6A264
LCD Controller with Voice/Dual Tone Melody
BONDING PAD
SN6A264
Note: The substrate MUST be connected to Vss in PCB layout.
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February 1, 2001
SN6A264
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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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.
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February 1, 2001
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