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Speech Controller. SN67085 Datasheet |
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SN67085
Speech Controller
INTRODUCTION
SN67085 is an 85 seconds single chip voice synthesizer IC which contains I/O
pins and a tiny controller. By programming through the tiny controller, user’s
applications including section combination, trigger modes, output status, and
other logic functions can then be easily implemented.
FEATURES
Single power supply 2.4V - 5.1V
Built in a tiny controller
85 seconds voice capacity are provided
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
Fixed current D/A output is provided to drive external connected transistor
for sound output
Low Voltage Reset
PIN ASSIGNMENT
Symbol
P20
P21
P22
P23
P30
P31
P32
P33
VDD
OSC
TEST
GND
VO
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 For testing only
I Negative power supply
O D/A current output
1 December 20, 2000
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SN67085
Speech Controller
ABSOLUTE MAXIMUM RATING
Items
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Symbol
VDD
VIN
TOP
TSTG
Min
-0.3
VSS-0.3
-20.0
-55.0
Max
6.0
VDD+0.3
70.0
125.0
Unit.
V
V
oC
oC
ELECTRICAL CHARACTERISTICS
Item
Operating Voltage
Standby Current
Operating Current
Input Current of P1
Drive Current of P2,P3
Sink Current of P2,P3
D/A Output Current
Oscillation Freq.
Sym. Min. Typ. Max. Unit Condition
VDD 2.4 3.0 5.1 V
ISBY
-
- 2.0 uA VDD=3V, no load
IOPR
-
- 250 uA VDD=3V, no load
Ii - 3 - uA VDD=3V
IOD 1.5 2
- mA VDD=3V,VO=2.4V
IOS 2.0 3
- mA VDD=3V,VO=0.4V
IVO 2.0 3.0 4.0 mA VDD=3V,VO=0.7V
FOSC
-
1.0
- MHz VDD=3V
2 December 20, 2000
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BONDING PAD
SN67085
Speech Controller
SN67085
Note: The substrate MUST be connected to Vss in PCB layout.
3 December 20, 2000
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