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參數(shù)資料
| 型號(hào)： | NSAM265SFA |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CompactSPEECH Digital Speech Processors |
| 中文描述： | CompactSPEECH數(shù)字語音處理器 |
| 文件頁數(shù)： | 35/58頁 |
| 文件大?。?/td> | 712K |
| 代理商： | NSAM265SFA |
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Appendix A Device Specifications
(Continued)
A.2 ABSOLUTE MAXIMUM RATINGS
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Storage Temperature
b
65
§
C to
a
150
§
C
0
§
C to
a
70
§
C
Temperature Under Bias
All Input or Output Voltages,
with Respect to GND
b
0.5V to
a
6.5V
Note:
Absolute maximum ratings indicate limits beyond which permanent
damage may occur. Continuous operation at these limits is not intended;
operation should be limited to those conditions specified below.
A.3 ELECTRICAL CHARACTERISTICS
T
A
e
0
§
C to
a
70
§
C, V
CC
e
5V
g
10%, GND
e
0V
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IH
TTL Input,
Logical 1 Input Voltage
2.0
V
CC
a
0.5
V
V
IL
TTL Input, Logical 0 Input Voltage
b
0.5
0.8
V
V
XH
CLKIN Input, High Voltage
External Clock
2.0
V
V
XL
CLKIN Input, Low Voltage
External Clock
0.8
V
V
ENVh
ENV0 High Level, Input Voltage
3.6
V
V
Hh
CMOS Input with Hysteresis,
Logical 1 Input Voltage
3.6
V
V
HI
CMOS Input with Hysteresis,
Logical 0 Input Voltage
1.1
V
V
hys
Hysteresis Loop Width (Note A)
0.5
V
V
OH
Logical 1 TT, Output Voltage
I
OH
e b
0.4 mA
2.4
V
V
OHWC
RAS, CAS, DWE and EMCS
Logical 1, Output Voltage
I
OH
e b
0.4 mA
2.4
V
I
OH
e b
50
m
A (Note B)
V
CC
b
0.2
V
V
OL
Logical 0, TTL Output Voltage
I
OL
e
4 mA
0.45
V
I
OL
e
50
m
A (Note B)
0.2
V
V
OLWC
RAS, CAS, DWE and EMCS
Logical 0, Output Voltage
I
OL
e
4.0 mA
0.45
V
I
OL
e
50
m
A (Note B)
0.2
V
I
L
Input Load Current (Note C)
0V
s
V
IN
s
V
CC
b
5.0
5.0
I
O
(Off)
Output Leakage Current
(I/O Pins in Input Mode) (Note C)
0V
s
V
OUT
s
V
CC
b
5.0
5.0
m
A
I
CC1
Active Supply Current
Normal Operation Mode
Running Speech Applications (Note D)
65
80
mA
I
CC2
Standby Supply Current
Normal Operation Mode,
DSPM Idle (Note D)
40
mA
I
CC3
Power-Down Mode
Supply Current
Power-Down Mode
(Notes D and E)
1.5
mA
C
X
X1 and X2 Capacitance (Note A)
17
pF
Note A:
Guaranteed by design.
Note B:
Measured in power-down mode. The total current driven or sourced by all the CompactSPEECH’s output signals is less than 50
m
A.
Note C:
Maximum 20
m
A for all pins together.
Note D:
I
OUT
e
0, T
A
e
25
§
C, V
CC
e
5V, operating from a 40.96 MHz crystal and running from internal memory with Expansion Memory disabled.
Note E:
All input signals are tied to 1 or 0 (above V
CC
b
0.5 or below V
SS
a
0.5V).
35
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