Integrated Device Technology, Inc.
HIGH-SPEED
4K X 8 FOURPORT™
STATIC RAM
DESCRIPTION:
IDT7054S/L
PRELIMINARY
FEATURES:
• High-speed access
— Military: 20/25/35/45ns (max.)
— Commercial: 15/20/25/35/45ns (max.)
• Low-power operation
— IDT7054S
Active: 750mW (typ.)
Standby: 10mW (typ.)
— IDT7054L
Active: 750mW (typ.)
Standby: 1.5mW (typ.)
• True Four-Port memory cells which allow simultaneous
reads of the same memory locations
• Fully asynchronous operation from each of the four ports:
P1, P2, P3, P4
• Battery backup operation—2V data retention
• TTL-compatible; single 5V (±10%) power supply
• Available in several popular hermetic and plastic
packages for both through-hole and surface mount
• Military product compliant to MIL-STD-883, Class B
• Industrial temperature range (–40°C to +85°C) is avail-
able, tested to military electrical specifications
The IDT7054 is a high-speed 4K x 8 FourPort Static RAM
designed to be used in systems where multiple access into a
common RAM is required. This FourPort Static RAM offers
increased system performance in multiprocessor systems
that have a need to communicate in real time and also offers
added benefit for high-speed systems in which multiple
access is required in the same cycle.
The IDT7054 is also designed to be used in systems where
on-chip hardware port arbitration is not needed. This part
lends itself to those systems which cannot tolerate wait states
or are designed to be able to externally arbitrate or withstand
contention when all ports simultaneously access the same
FourPort RAM location.
The IDT7054 provides four independent ports with sepa-
rate control, address, and I/O pins that permit independent,
asynchronous access for reads or writes to any location in
memory. It is the user’s responsibility to ensure data integrity
when simultaneously accessing the same memory location
from all ports. An automatic power down feature, controlled
by
CE
, permits the on-chip circuitry of each port to enter a very
low power standby power mode.
FUNCTIONAL BLOCK DIAGRAM
R/
P1
P1
P1
R/
P4
P4
P4
I/O
0P1
-I/O
7P1
COLUMN
I/O
COLUMN
I/O
I/O
0P4
-I/O
7P4
A
0P1
- A
11P1
PORT 1
ADDRESS
DECODE
LOGIC
MEMORY
ARRAY
PORT 2
ADDRESS
DECODE
LOGIC
PORT 4
ADDRESS
DECODE
LOGIC
PORT 3
ADDRESS
DECODE
LOGIC
A
0P4
- A
11P4
A
0P2
- A
11P2
A
0P3
- A
11P3
I/O
0P2
-I/O
7P2
P2
COLUMN
I/O
COLUMN
I/O
I/O
0P3
-I/O
7P3
P3
P3
P3
3241 drw 01
P2
R/
P2
R/
The IDT logo and FourPort are trademarks of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1995 Integrated Device Technology, Inc.
AUGUST 1995
DSC-1270/-
1
IDT7054S/L
HIGH-SPEED 4K x 8 FourPort™ STATIC RAM
PRELIMINARY
MILITARY AND COMMERCIAL TEMPERATURE RANGES
Fabricated using IDT’s CMOS high-performance technol-
ogy, this four port RAM typically operates on only 750mW of
power. Low-power (L) versions offer battery backup data
retention capability, with each port typically consuming 50µW
from a 2V battery.
The IDT7054 is packaged in a ceramic 108-pin PGA and a
120-pin thin quad flatpack. Military grade product is manufac-
tured in compliance with the latest revision of MIL-STD-883,
Class B, making it ideally suited to military temperature
applications demanding the highest level of performance and
reliability.
PIN CONFIGURATIONS
81
80
77
74
72
69
68
65
63
60
57
54
R/
P2
84
A
11
P2
83
78
A
7
P2
76
A
5
P2
73
A
3
P2
70
A
0
P2
67
A
0
P3
64
A
3
P3
61
A
5
P3
59
A
7
P3
A
8
P3
55
A
11
P3
56
R/
P3
53
12
NC
87
86
P2
82
A
8
P2
A
10
P2
79
75
A
4
P2
71
A
1
P2
66
A
1
P3
A
2
P3
A
4
P3
62
A
10
P3
58
P3
51
NC
50
11
A
2
P1
90
88
A
1
P1
85
A
9
P2
A
0
P1
89
A
6
P2
A
2
P2
A
6
P3
A
9
P3
52
P3
49
A
1
P4
47
A
2
P4
A
5
P4
45
10
A
5
P1
92
91
A
3
P1
A
6
P1
94
93
A
0
P4
48
46
A
3
P4
A
6
P4
43
09
A
10
P1
95
A
4
P1
44
A
4
P4
GND
39
A
10
P4
42
08
A
8
P1
96
97
A
7
P1
A
11
P1
100
V
CC
98
IDT7054
G108-1
A
7
P4
40
41
A
8
P4
A
9
P4
38
07
A
9
P1
99
P1
102
108-Pin PGA
Top View
P4
35
37
A
11
P4
06
R/
P1
101
P1
103
I/O
0
P1
106
GND
P4
31
34
36
R/
P4
NC
33
05
NC
104
I/O
1
P1
105
1
GND
4
8
12
17
21
25
GND
28
I/O
7
P4
32
04
I/O
2
P1
107
2
I/O
3
P1
5
I/O
6
P1
7
V
CC
GND
10
V
CC
13
V
CC
16
GND
19
V
CC
22
I/O
2
P4
24
29
I/O
5
P4
I/O
3
P4
26
I/O
6
P4
30
03
I/O
4
P1
108
3
I/O
7
P1
6
I/O
0
P2
9
I/O
2
P2
I/O
3
P2
D
I/O
4
P2
11
I/O
6
P2
14
I/O
1
P3
15
I/O
3
P3
18
I/O
5
P3
20
I/O
7
P3
23
I/O
4
P4
27
02
I/O
5
P1
A
NC
B
I/O
1
P2
C
I/O
5
P2
E
I/O
7
P2
F
I/O
0
P3
G
I/O
2
P3
H
I/O
4
P3
J
I/O
6
P3
K
I/O
0
P4
L
I/O
1
P4
M
3241 02
drw
01
NOTES:
1. All V
CC
pins must be connected to the power supply.
2. All GND pins must be connected to the ground supply.
3. This text does not indicate orientation of the actual part-marking.
2
IDT7054S/L
HIGH-SPEED 4K x 8 FourPort™ STATIC RAM
PRELIMINARY
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS (CONT'D.)
R/
P2
A
11P2
A
9P2
A
8P2
A
7P2
A
10P2
A
6P2
A
5P2
A
4P2
A
3P2
A
2P2
A
1P2
A
0P2
N/C
A
0P3
A
1P3
A
2P3
A
3P3
A
4P3
A
5P3
A
6P3
A
10P3
A
7P3
A
8P3
A
9P3
A
11P3
P2
P3
P3
P3
N/C
N/C
P2
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
R/
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
N/C
A
0P1
A
1P1
A
2P1
A
3P1
A
4P1
A
5P1
A
6P1
A
10P1
V
CC
A
7P1
A
8P1
A
9P1
A
11P1
P1
R/
P1
P1
N/C
I/O
0P1
I/O
1P1
I/O
2P1
I/O
3P1
GND
I/O
4P1
I/O
5P1
N/C
N/C
N/C
I/O
6P1
I/O
7P1
N/C
Vcc
I/O
0P2
I/O
1P2
I/O
2P2
GND
I/O
3P2
I/O
4P2
I/O
5P2
Vcc
I/O
6P2
I/O
7P2
N/C
I/O
0P3
I/O
1P3
Vcc
I/O
2P3
I/O
3P3
I/O
4P3
GND
I/O
5P3
I/O
6P3
I/O
7P3
Vcc
I/O
0P4
I/O
1P4
N/C
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
IDT7054
120-pin TQFP
N/C
N/C
N/C
A
0P4
A
1P4
A
2P4
A
3P4
A
4P4
A
5P4
A
6P4
A
10P4
GND
A
7P4
A
8P4
A
9P4
A
11P4
P4
120-Pin Thin Quad Flatpack
Top View
R/
P4
P4
N/C
GND
I/O
7P4
I/O
6P4
I/O
5P4
GND
I/O
4P4
I/O
3P4
I/O
2P4
N/C
N/C
3241 drw 03
NOTES:
1. All V
CC
pins must be connected to the power supply.
2. All GND pins must be connected to the ground supply.
3. This text does not indicate orientation of the actual part-marking.
3
IDT7054S/L
HIGH-SPEED 4K x 8 FourPort™ STATIC RAM
PRELIMINARY
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
(1,2)
Symbol
A
0
P1 – A
11
P1
A
0
P2 – A
11
P2
A
0
P3 – A
11
P3
A
0
P4 – A
11
P4
I/O
0
P1 – I/O
7
P1
I/O
0
P2 – I/O
7
P2
I/O
0
P3 – I/O
7
P3
I/O
0
P4 – I/O
7
P4
R/
W
P1
R/
W
P2
R/
W
P3
R/
W
P4
GND
Pin Name
Address Lines – Port 1
Address Lines – Port 2
Address Lines – Port 3
Address Lines – Port 4
Data I/O – Port 1
Data I/O – Port 2
Data I/O – Port 3
Data I/O – Port 4
Read/Write – Port 1
Read/Write – Port 2
Read/Write – Port 3
Read/Write – Port 4
Ground
Chip Enable – Port 1
Chip Enable – Port 2
Chip Enable – Port 3
Chip Enable – Port 4
Output Enable – Port 1
Output Enable – Port 2
Output Enable – Port 3
Output Enable – Port 4
Power
2674 tbl 01
CAPACITANCE (TQFP Package Only)
(T
A
= +25°C, f = 1.0MHz)
Symbol
C
IN
C
OUT
Parameter
(1)
Input Capacitance
Output Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Max.
9
10
Unit
pF
pF
NOTE:
2674 tbl 03
1. This parameter is determined by device characterization but is not
production tested.
2. 3dV references the interpolated capacitance when the input and the
output signals switch from 0V to 3V or from 3V to 0V.
RECOMMENDED OPERATING
TEMPERATURE AND SUPPLY VOLTAGE
Grade
Military
Commercial
Ambient
Temperature
–55°C to +125°C
0°C to +70°C
GND
0V
0V
V
CC
5.0V
±
10%
5.0V
±
10%
2674 tbl 04
CE
P1
CE
P2
CE
P3
CE
P4
OE
P1
OE
P2
OE
P3
OE
P4
V
CC
RECOMMENDED DC OPERATING
CONDITIONS
Symbol
V
CC
GND
V
IH
V
IL
Parameter
Supply Voltage
Supply Voltage
Input High Voltage
Input Low Voltage
Min.
4.5
0
2.2
–0.5
(1)
Typ.
5.0
0
—
—
Max. Unit
5.5
0
6.0
(2)
0.8
V
V
V
V
2674 tbl 05
NOTES:
1. All V
CC
pins must be connected to the power supply.
2. All GND pins must be connected to the ground supply.
NOTE:
1. V
IL
≥
-1.5V for pulse width less than 10ns.
2. V
TERM
must not exceed Vcc + 0.5V.
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
TERM
(2)
Rating
Commercial
Military
–0.5 to +7.0
Unit
V
Terminal Voltage –0.5 to +7.0
with Respect
to GND
Operating
Temperature
Temperature
Under Bias
Storage
Temperature
DC Output
Current
0 to +70
–55 to +125
–55 to +125
50
T
A
T
BIAS
T
STG
I
OUT
–55 to +125
–65 to +135
–65 to +150
50
°C
°C
°C
mA
NOTE:
2674 tbl 02
1. Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect reliability.
2. V
TERM
must not exceed Vcc + 0.5V for more than 25% of the cycle time
or 10ns maximum, and is limited to
≤
20mA for the period of V
TERM
≥
V
CC
+ 0.5V.
4
IDT7054S/L
HIGH-SPEED 4K x 8 FourPort™ STATIC RAM
PRELIMINARY
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER THE
OPERATING TEMPERATURE AND SUPPLY VOLTAGE RANGE
(1, 5)
(V
CC
= 5.0V
±
10%)
Symbol
I
CC1
Parameter
Operating Power
Supply Current
(All Ports Active)
I
CC2
Dynamic Operating
Current
(All Ports Active)
I
SB
Standby Current
(All Ports — TTL
Level Inputs)
I
SB1
Full Standby Current
(All Ports — All
CMOS Level Inputs)
All Ports
CE
≥
V
CC
- 0.2V
V
IN
≥
V
CC
- 0.2V or
V
IN
≤
0.2V, f = 0
(4)
Condition
Version
MIL.
S
L
COM’L.
MIL.
COM’L.
MIL.
COM’L.
L
MIL.
COM’L.
S
L
S
L
S
L
S
L
S
S
L
S
L
IDT7054X25
IDT7054X15
COM'L. ONLY
Typ.
(2)
Max.
IDT7054X20
(2)
Typ. Max.
Outputs Open
f = 0
(4)
CE
= V
IL
Unit
150
150
150
150
240
210
260
230
90
80
80
70
1.5
.3
1.5
.3
400
340
340
290
420
360
390
345
135
105
105
90
30
4.5
1.5
.3
150
150
150
150
230
200
240
210
80
70
70
60
1.5
.3
1.5
.3
380
320
320
270
410
350
370
325
125
115
95
80
30
4.5
1.5
.3
mA
Outputs Open
f = f
MAX (5)
CE
= V
IL
mA
CE
= V
IH
f = f
MAX (5)
mA
mA
IDT7054X35
Typ.
(2)
Max.
IDT7054X45
(2)
Typ. Max.
Symbol
I
CC1
Parameter
Operating Power
Supply Current
(All Ports Active)
CE
= V
IL
f = 0
(4)
Condition
Outputs Open
Version
MIL.
S
L
COM’L.
MIL.
COM’L.
MIL.
COM’L.
S
L
S
L
S
L
S
L
S
L
S
L
S
L
Typ.
(2)
Max.
Unit
150
150
150
150
225
190
225
195
45
40
60
50
1.5
.3
1.5
.3
315
310
300
250
400
340
350
305
115
85
85
70
30
4.5
1.5
1.5
150
150
150
150
210
180
210
180
40
35
40
35
1.5
.3
1.5
.3
360
300
300
250
395
330
335
290
110
80
75
60
30
4.5
1.5
1.5
150
150
150
150
195
170
195
170
35
30
35
30
1.5
.3
1.5
.3
360
300
300
250
390
325
330
285
105
75
70
55
30
4.5
1.5
1.5
mA
I
CC2
Dynamic Operating
Current
(All Ports Active)
CE
= V
IL
mA
Outputs Open
f = f
MAX(5)
I
SB
Standby Current
(All Ports — TTL
Level Inputs)
CE
= V
IH
f = f
MAX(5)
mA
I
SB1
Full Standby Current
(All Ports — All
CMOS Level Inputs)
CE
≥
V
CC
- 0.2V
V
IN
≥
V
CC
- 0.2V or
V
IN
≤
0.2V, f = 0
(4)
All Ports
MIL.
COM’L.
mA
NOTES:
2674 tbl 07
1. “X” in part number indicates power rating (S or L).
2. V
CC
= 5V, T
A
= +25°C and are not production tested.
3. f = 0 means no address or control lines change.
4. At f = f
MAX
,
address and control lines (except Output Enable) are cycling at the maximum frequency read cycle of 1/t
RC
, and using “AC Test Conditions”
of input levels of GND to 3V.
5. For the case of one port, divide the appropriate current above by four.
5
模拟与混合信号
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
