SN6A512
LCD Controller with Voice/Dual Tone Melody
February 1, 2001
1
INTRODUCTION
SN6A512 is a series of single chip voice/dual tone melody synthesizer IC with
16*64/8*64 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 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, two optional 4-bit output ports are provided
256*4 bits RAM for programming usage are provided
256*4 bits RAM for LCD display usage are provided
Maximum 512k*10 program ROM is provided
Readable ROM code data
Built in direct 16*64/8*64 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 SN6A512 series 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
SN6A512
LCD Controller with Voice/Dual Tone Melody
February 1, 2001
2
PIN ASSIGNMENT
Symbol
I/O
Function Description
SEG1 ~ SEG56
O
Segment1~ 56 for LCD driver
SEG57/P53 ~
SEG60/P50
O
Optional to be Segment57 ~ 60 or P53-P50
Seg57-60: segment57 ~ 60 for LCD driver.
P53-P50: bit3-bit0 for output port 5.
SEG61/P43 ~
SEG64/P40
O
Optional to be segment61 ~ 64 or P43-P40
SEG61-64: segment61 ~ 64 for LCD driver.
P43-P40: Bit3-bit0 for output port 4.
COM1-COM16
O
Com1-Com16 for 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.
RST
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-VLC4
LCD voltage bias connection pins.
WSUB
I
Well substrate of chip. Connected to the
highest voltage of chip (VDD or VLCDR).
SN6A512
LCD Controller with Voice/Dual Tone Melody
February 1, 2001
3
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
SN6A512
LCD Controller with Voice/Dual Tone Melody
February 1, 2001
4
BONDING PAD
SN6A512
Note: The substrate MUST be connected to Vss in PCB layout.
SN6A512
LCD Controller with Voice/Dual Tone Melody
February 1, 2001
5
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