Integrated Device Technology, Inc.
HIGH-SPEED
2K X 8 FOURPORT™
STATIC RAM
IDT7052S/L
FEATURES:
• High-speed access
— Military: 20/25/35/45ns (max.)
— Commercial: 15/20/25/35/45ns (max.)
• Low-power operation
— IDT7052S
Active: 750mW (typ.)
Standby: 10mW (typ.)
— IDT7052L
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
• Versatile control for write-inhibit: separate
BUSY
input to
control write-inhibit for each of the four ports
• 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
DESCRIPTION:
The IDT7052 is a high-speed 2K 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 IDT7052 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 IDT7052 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
FUNCTIONAL BLOCK DIAGRAM
R/
CE
P1
W
P1
CE
P4
R/
W
P4
OE
P1
I/O
0P1
-I/O
7P1
COLUMN
I/O
COLUMN
I/O
OE
P4
I/O
0P4
-I/O
7P4
BUSY
P1
A
0P1
- A
10P1
PORT 1
ADDRESS
DECODE
LOGIC
MEMORY
ARRAY
A
0P2
- A
10P2
PORT 2
ADDRESS
DECODE
LOGIC
PORT 3
ADDRESS
DECODE
LOGIC
PORT 4
ADDRESS
DECODE
LOGIC
BUSY
P4
A
0P4
- A
10P4
A
0P3
- A
10P3
BUSY
P2
I/O
0P2
-I/O
7P2
COLUMN
I/O
COLUMN
I/O
BUSY
P3
I/O
0P3
-I/O
7P3
OE
P2
OE
P3
R/
CE
P2
R/
W
P2
CE
P3
W
P3
2674 drw 01
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-1269/3
1
IDT7052S/L
HIGH-SPEED 2K x 8 FourPort™ STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
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.
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 IDT7052 is packaged in a ceramic 108-pin PGA, a
plastic 132-pin quad flatpack, and a 120-pin thin quad flatpack.
Military grade product is manufactured 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
R/
P2
84
W
80
77
74
72
69
68
65
63
60
57
54
NC
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
56
NC
R/
P3
53
W
12
BUSY
P2
A
2
P1
OE
P2
86
82
A
8
P2
A
10
P2
79
75
A
4
P2
71
A
1
P2
66
A
1
P3
62
A
4
P3
58
A
10
P3
55
A
8
P3
OE
P3
51
BUSY
P3
50
11
87
A
1
P1
88
85
P2
A
0
P1
89
CE
A
9
P2
A
6
P2
A
2
P2
A
2
P3
A
6
P3
A
9
P3
52
CE
P3
A
0
P4
A
1
P4
49
47
A
2
P4
A
5
P4
45
10
90
A
5
P1
92
91
A
3
P1
A
6
P1
94
93
A
3
P4
46
09
48
A
10
P1
95
A
4
P1
44
A
4
P4
43
A
6
P4
42
A
10
P4
A
8
P4
41
08
A
8
P1
96
97
A
7
P1
98
V
CC
IDT7052
G108-1
(1,2,3)
GND
39
A
7
P4
40
07
A
9
P1
99
NC
100
P1
102
CE
CE
NC
37
38
R/
P1
101
W
108-Pin PGA
Top View
P4
A
9
P4
R/
P4
36
06
35
OE
P1
103
I/O
0
P1
106
GND
31
34
P4
GND
4
8
12
17
21
25
28
OE
W
05
BUSY
P1
I/O
2
P1
I/O
1
P1
105
1
GND
I/O
7
P4
32
BUSY
P4
33
04
104
I/O
3
P1
2
5
I/O
6
P1
7
V
CC
GND
10
13
V
CC
16
V
CC
GND
19
22
V
CC
24
I/O
2
P4
29
I/O
5
P4
30
I/O
6
P4
I/O
4
P4
27
03
107
I/O
4
P1
108
3
I/O
7
P1
6
I/O
0
P2
9
I/O
2
P2
11
I/O
4
P2
14
I/O
6
P2
15
I/O
1
P3
18
I/O
3
P3
20
I/O
5
P3
23
I/O
7
P3
26
I/O
3
P4
I/O
0
P4
L
02
I/O
5
P1
A
Index
NC
B
I/O
1
P2
C
I/O
3
P2
D
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
1
P4
M
2674 drw 02
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
IDT7052S/L
HIGH-SPEED 2K x 8 FourPort™ STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS (CONT'D.)
R/
P2
N/C
A
9P2
A
8P2
A
7P2
A
10P2
N/C
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
N/C
R/
P3
N/C
117
116
CE
P2
N/C
BUSY
P2
OE
P2
N/C
17
18
1
CE
P3
OE
P3
W
W
N/C
BUSY
P3
N/C
A
0P4
A
1P4
A
2P4
A
3P4
A
4P4
A
5P4
A
6P4
N/C
A
10P4
GND
A
7P4
A
8P4
A
9P4
N/C
N/C
A
0P1
A
1P1
A
2P1
A
3P1
A
4P1
A
5P1
A
6P1
N/C
A
10P1
V
CC
A
7P1
A
8P1
A
9P1
N/C
IDT7052
PQ132-1
(1,2,3,)
CE
P1
R/
BUSY
P1
OE
P1
W
P1
132-Pin Plastic
Quad Flatpack
Top View
CE
P4
R/
OE
P4
W
P4
BUSY
P4
N/C
GND
N/C
I/O
7P4
I/O
6P4
I/O
5P4
GND
I/O
4P4
I/O
3P4
I/O
2P4
N/C
N/C
N/C
I/O
0P1
I/O
1P1
I/O
2P1
I/O
3P1
GND
N/C
I/O
4P1
I/O
5P1
N/C
N/C
50
51
83
84
N/C
I/O
6P1
I/O
7P1
N/C
V
CC
N/C
I/O
0P2
I/O
1P2
I/O
2P2
GND
I/O
3P2
I/O
4P2
I/O
5P2
V
CC
I/O
I/O
7P3
N/C
I/O
0P3
I/O
1P3
V
CC
I/O
2P3
I/O
3P3
I/O
4P3
GND
N/C
I/O
5P3
I/O
6P3
I/O
7P3
N/C
V
CC
I/O
0P4
I/O
1P4
N/C
6P3
2674 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
IDT7052S/L
HIGH-SPEED 2K x 8 FourPort™ STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS (CONT'D.)
R/
P2
N/C
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
N/C
P2
P3
P3
P3
N/C
N/C
P2
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
A
0P1
A
1P1
A
2P1
A
3P1
A
4P1
A
5P1
A
6P1
A
10P1
V
CC
A
7P1
A
8P1
A
9P1
N/C
P1
R/
P1
P1
P1
33
34
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
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
I/O
0P1
I/O
1P1
I/O
2P1
I/O
3P1
GND
I/O
4P1
I/O
5P1
N/C
N/C
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
N/C
N/C
P3
IDT7052
120-pin TQFP
A
0P4
A
1P4
A
2P4
A
3P4
A
4P4
A
5P4
A
6P4
A
10P4
GND
A
7P4
A
8P4
A
9P4
N/C
P4
120-Pin Thin Quad Flatpack
Top View
R/
P4
P4
P4
GND
I/O
7P4
I/O
6P4
I/O
5P4
GND
I/O
4P4
I/O
3P4
I/O
2P4
N/C
N/C
2674 drw 04
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.
4
IDT7052S/L
HIGH-SPEED 2K x 8 FourPort™ STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
(1,2)
Symbol
A
0
P1 – A
10
P1
A
0
P2 – A
10
P2
A
0
P3 – A
10
P3
A
0
P4 – A
10
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
Write Disable – Port 1
Write Disable – Port 2
Write Disable – Port 3
Write Disable – Port 4
Power
2674 tbl 01
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
CE
P1
CE
P2
CE
P3
CE
P4
OE
P1
OE
P2
OE
P3
OE
P4
BUSY
P1
BUSY
P2
BUSY
P3
BUSY
P4
V
CC
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.
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
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:
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
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
NOTE:
1. V
IL
≥
-1.5V for pulse width less than 10ns.
2. V
TERM
must not exceed Vcc + 0.5V.
2674 tbl 05
5
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