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參數資料
| 型號： | SCM6946 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 512Kx8 Bit Static Random Access Memory(512Kx8位靜態(tài)RAM) |
| 中文描述： | 512Kx8位靜態(tài)隨機存取存儲器（512Kx8位靜態(tài)RAM）的 |
| 文件頁數： | 2/9頁 |
| 文件大?。?/td> | 171K |
| 代理商： | SCM6946 |
SCM6946
MCM6946
2
MOTOROLA FAST SRAM
PIN ASSIGNMENTS
5
4
3
2
1
10
9
8
7
6
11
12
13
14
15
16
17
18
20
21
22
23
24
25
26
19
27
28
32
31
30
29
36
35
34
33
A
A
A
A
E
A
VSS
VDD
DQ
DQ
DQ
DQ
A
A
W
A
A
A
VDD
DQ
DQ
A
A
A
A
A
NC
VSS
A
A
A
G
DQ
DQ
NC
A
5
6
4
3
2
1
10
11
12
13
14
9
8
7
36
37
38
39
40
41
42
35
34
33
43
44
A
A
A
A
A
NC
NC
E
VDD
VSS
DQ
DQ
A
A
A
NC
NC
NC
DQ
VSS
VDD
DQ
G
A
25
24
23
26
27
28
29
30
31
32
15
16
17
18
19
20
21
22
A
A
A
DQ
DQ
NC
NC
NC
A
A
A
A
W
A
DQ
DQ
A
A
NC
NC
400 MIL SOJ
TSOP TYPE II
TRUTH TABLE
(X = Don’t Care)
E
G
W
Mode
I/O Pin
Cycle
Current
H
X
X
Not Selected
High–Z
—
ISB1, ISB2
IDDA
IDDA
IDDA
L
H
H
Output Disabled
High–Z
—
L
L
H
Read
Dout
High–Z
Read
L
X
L
Write
Write
ABSOLUTE MAXIMUM RATINGS
(See Note)
Rating
Symbol
Value
Unit
Power Supply Voltage Relative to VSS
Voltage Relative to VSS for Any Pin
Except VDD
VDD
Vin, Vout
– 0.5 to 5.0
V
– 0.5 to VDD + 0.5
V
Output Current (per I/O)
Iout
±
20
mA
Power Dissipation
PD
Tbias
TA
Tstg
1.0
W
Temperature Under Bias
– 10 to 85
°
C
Operating Temperature
0 to 70
°
C
Storage Temperature — Plastic
– 55 to 150
°
C
NOTE: Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are
exceeded. Functional operation should be restricted to RECOMMENDED OPER-
ATING CONDITIONS. Exposure to higher than recommended voltages for
extended periods of time could affect device reliability.
This device contains circuitry to protect the
inputs against damage due to high static volt-
ages or electric fields; however, it is advised
that normal precautions be taken to avoid
application of any voltage higher than maxi-
mum rated voltages to these high–impedance
circuits.
This BiCMOS memory circuit has been
designed to meet the dc and ac specifications
shown in the tables, after thermal equilibrium
has been established. The circuit is in a test
socket or mounted on a printed circuit board and
transverse air flow of at least 500 linear feet per
minute is maintained.
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