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Speech Controller. SN65042 Datasheet |
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SN65042
Two Channels Direct Drive Speech Controller
INTRODUCTION
SN65042 is a 42 seconds two-channel single chip voice synthesizer IC which
contains a PWM Direct Drive Circuit and fixed current D/A output. There are two
4-bit I/O ports and built in a tiny controller. By programming through the tiny
controller, user’s applications including section combination, trigger modes,
output status, and other logic functions can be easily implemented.
FEATURES
Single power supply 2.4V – 5.1V
42 seconds voice capacity is provided
Built in a tiny controller
Two 4-bit I/O ports are provided
64*4 bits RAM are provided
Maximum 16k program ROM is provided
Readable ROM code data
Built in a high quality speech synthesizer
Adaptive playing speed from 2.5k-20kHz is provided
Two independent voice channels (Channel 1 + Channel 2→Buo1,Buo2)
Built in a PWM Direct Drive circuit and a fixed current D/A output
Low Voltage Reset
System clock : 2MHZ
1 December 20, 2000
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SN65042
Two Channels Direct Drive Speech Controller
PIN ASSIGNMENT
Symbol
P20
P21
P22
P23
P30
P31
P32
P33
VDD
OSC
GND
BUO1/VO
BUO2
I/O Function Description
I/O Bit0 of I/O port 2
I/O Bit1 of I/O port 2
I/O Bit2 of I/O port 2
I/O Bit3 of I/O port 2
I/O Bit0 of I/O port 3
I/O Bit1 of I/O port 3
I/O Bit2 of I/O port 3
I/O Bit3 of I/O port 3
I Positive power supply
I Oscillation component connection pin
I Negative power supply
O PWM output 1 / DA current output
O PWM output 2
2 December 20, 2000
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SN65042
Two Channels Direct Drive Speech Controller
ABSOLUTE MAXIMUM RATINGS
Items
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Symbol
VDD-V
VIN
TOP
TSTG
Min
-0.3
GND-0.3
-20.0
-55.0
Max
6.0
VDD+0.3
70.0
125.0
Unit.
V
V
oC
oC
ELECTRICAL CHARACTERISTICS
Item
Sym.
Operating Voltage
Standby current
Operating Current
Input current of P2, P3
Drive current of P2, P3
Sink Current of P2, P3
Drive current of Buo1
Sink Current of Buo1
VDD
ISBY
IOPR
IIH
IOD
IOS
IOD
IOS
Drive Current of Buo2
Sink Current of Buo2
Output current of VO
IOD
IOS
Ivo
Oscillation Freq.
FOSC
Min.
2.4
-
-
-
1.5
2.0
100
100
100
100
2.0
-
Typ.
3.0
-
-
3.0
2
3
120
120
120
120
3.0
1.0
Max.
5.1
2.0
250
10.0
-
-
-
-
-
-
4.0
-
Unit Condition
V
uA VDD=3V, no load
uA VDD=3V, no load
uA VDD=3V,VIN=3V
mA VDD=3V,VO=2.4V
mA VDD=3V,VO=0.4V
mA VDD=3V,Buo1=1.5V
mA VDD=3V,Buo1=1.5V
mA VDD=3V,Buo2=1.5V
mA VDD=3V,Buo2=1.5V
mA VDD=3V,VO=0.7V
MHz VDD=3V
3 December 20, 2000
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