SN67d03
One Channel Direct Drive Speech Controller
September 7, 2001
1
INTRODUCTION
SN67d03 Series is a 3 seconds one-channel single chip voice synthesizer IC
which contains a PWM Direct Drive Circuit. There are two IO pins (one input,
one IO), which can be configured as two trigger pins, or one trigger and one
output. By filling a coding form, users' applications, including section
combination, trigger modes, and different output status, can be easily
implemented.
FEATURES
Single power supply 2.4V 5.1V
3 seconds voice capacity is provided
1-bit input port (P1) and 1-bit I/O port (P2) are provided
16*1 bits RAM are provided
Built in a high quality speech synthesizer
Two different playing rate, 6KHz and 8KHz.
Built in a PWM Direct Drive circuit output BUO1 and BUO2 directly
connected to Speaker for sound output
System clock: 2MHZ
Low Voltage Reset
PIN ASSIGNMENT
Symbol
I/O
Function Description
P1
I
Input port
P2
I/O I/O port
VDD
I
Positive power supply
OSC
I
Oscillation component connection pin
GND
I
Negative power supply
BUO1
O
PWM output 1
BUO2
O
PWM output 2
SN67d03
One Channel Direct Drive Speech Controller
September 7, 2001
2
ABSOLUTE MAXIMUM RATINGS
Items
Symbol
Min
Max
Unit.
Supply Voltage
V
DD
-V
-0.3
6.0
V
Input Voltage
V
IN
GND-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 CHARACTERISTICS
Item
Sym. Min. Typ. Max. Unit
Condition
Operating Voltage
V
DD
2.4
3.0
5.1
V
Standby current
I
SBY
-
-
2.0
uA V
DD
=3V, no load
Operating Current
I
OPR
-
-
250
uA V
DD
=3V, no load
Input current of P1, P2
I
IH
-
3.0
10.0
uA V
DD
=3V,V
IN
=3V
Drive current of P2
I
OD
1.5
2
-
mA V
DD
=3V,V
O
=2.4V
Sink Current of P2
I
OS
2.0
3
-
mA V
DD
=3V,V
O
=0.4V
Drive current of Buo1
I
OD
100
120
-
mA VDD=3V,Buo1=1.5V
Sink Current of Buo1
I
OS
100
120
-
mA VDD=3V,Buo1=1.5V
Drive Current of Buo2
I
OD
100
120
-
mA VDD=3V,Buo2=1.5V
Sink Current of Buo2
I
OS
100
120
-
mA VDD=3V,Buo2=1.5V
Oscillation Freq.
F
OSC
-
2.0
-
MHz V
DD
=3V
SN67d03
One Channel Direct Drive Speech Controller
September 7, 2001
3
APPLICATION CIRCUIT
Note: Please bond all of V
DD
and V
SS
pins.
VDD
P1
P2
BUO1
BUO2
VDD
VDD
OSC
SN67d03
0.1uF
300K
GND
SN67d03
One Channel Direct Drive Speech Controller
September 7, 2001
4
BONDING PAD
SN67d03
Note: The substrate MUST be connected to Vss in PCB layout.
2
1
3
4
5
6
7
8
P1
P2
GND
BU
O
1
VDD
B
UO2
GND
OSC
(0,0)
SN67d03
One Channel Direct Drive Speech Controller
September 7, 2001
5
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