HIGH-SPEED
2K x 8 FourPort
TM
STATIC RAM
Features
◆
IDT7052S/L
◆
◆
◆
◆
High-speed access
– Commercial: 20/25/35ns (max.)
– Industrial: 25ns (max.)
– Military: 25/35ns (max.)
Low-power operation
– IDT7052S
Active: 750mW (typ.)
Standby: 7.5mW (typ.)
– IDT7052L
Active: 750mW (typ.)
Standby: 1.5mW (typ.)
True FourPort memory cells which allow simultaneous
access 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 120 pin and 132 pin Thin Quad Flatpacks and
108 pin PGA
Military product compliant to MIL-PRF-38535 QML
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
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
Functional Block Diagram
R/W
P1
CE
P1
OE
P1
I/O
0P1
-I/O
7P1
BUSY
P1
PORT 1
ADDRESS
DECODE
LOGIC
PORT 2
ADDRESS
DECODE
LOGIC
PORT 4
ADDRESS
DECODE
LOGIC
PORT 3
ADDRESS
DECODE
LOGIC
COLUMN
I/O
COLUMN
I/O
R/W
P4
CE
P4
OE
P4
I/O
0P4
-I/O
7P4
BUSY
P4
A
0P1
- A
10P1
A
0P4
- A
10P4
MEMORY
ARRAY
A
0P2
- A
10P2
BUSY
P2
I/O
0P2
-I/O
7P2
OE
P2
CE
P2
R/W
P2
A
0P3
- A
10P3
BUSY
P3
COLUMN
I/O
COLUMN
I/O
I/O
0P3
-I/O
7P3
OE
P3
CE
P3
R/W
P3
2674 drw 01
NOVEMBER 2001
1
©2001 Integrated Device Technology, Inc.
DSC 2674/11
IDT7052S/L
High-Speed 2K x 8 FourPort™ Static RAM
Military, Industrial and Commercial Temperature Ranges
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 separate 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.
Fabricated using IDT’s CMOS high-performance technology, this
FourPort SRAM 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 Pin Grid Array (PGA),
120-pin Thin Quad Flatpack (TQFP) and 132-pin Plastic Quad Flatpack
(PQF). Military grade product is manufactured in compliance with the latest
revision of MIL-PRF-38535 QML, making it ideally suited to military
temperature applications demanding the highest level of performance and
reliability.
Pin Configurations
(1,2,3)
11/07/01
81
80
77
74
72
69
68
65
63
60
57
54
R/W
P2
84
83
NC
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
NC
56
R/W
P3
53
12
BUSY
P2
87
86
OE
P2
82
A
8
P2
79
A
10
P2
75
A
4
P2
71
A
1
P2
66
A
1
P3
62
A
4
P3
A
6
P3
A
10
P3
58
OE
P3
51
BUSY
P3
50
11
A
2
P1
90
88
A
1
P1
85
CE
A
9
P2
A
6
P2
A
2
P2
A
2
P3
A
9
P3
52
CE
P3
49
A
1
P4
47
A
2
P4
A
5
P4
45
10
A
5
P1
92
91
A
3
P1
89
A
0
P1
48
A
0
P4
46
A
3
P4
A
6
P4
43
42
09
A
10
P1
95
94
A
6
P1
93
A
4
P1
44
A
4
P4
GND
39
40
A
10
P4
A
8
P4
41
08
A
8
P1
96
97
A
7
P1
NC
100
V
CC
98
IDT7052G
G108-1
(4)
108-Pin PGA
Top View
(5)
A
7
P4
NC
37
38
07
A
9
P1
99
CE
P1
102
CE
P4
35
A
9
P4
R/W
P4
36
06
R/W
P1
101
OE
P1
103
I/O
0
P1
106
GND
31
OE
P4
34
05
BUSY
P1
104
I/O
1
P1
105
1
GND
4
8
12
17
21
25
GND
28
32
I/O
7
P4
I/O
5
P4
29
BUSY
P4
33
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
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
15
I/O
1
P3
I/O
0
P3
G
I/O
3
P3
18
I/O
5
P3
20
23
I/O
7
P3
I/O
6
P3
K
I/O
3
P4
26
I/O
4
P4
27
02
I/O
5
P1
A
INDEX
NC
B
I/O
1
P2
C
I/O
5
P2
E
I/O
7
P2
F
I/O
2
P3
H
I/O
4
P3
J
I/O
0
P4
L
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. Package body is approximately 1.21 in x 1.21 in x .16 in.
4. This package code is used to reference the package diagram.
5. This text does not indicate orientation of the actual part-marking.
2
6.42
IDT7052S/L
High-Speed 2K x 8 FourPort™ Static RAM
Military, Industrial and Commercial Temperature Ranges
Pin Configurations
(1,2,3)
(con't.)
N/C
CE
P2
R/W
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
OE
P3
CE
P3
R/W
P3
N/C
17
1
11/07/01
N/C
OE
P2
BUSY
P2
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
CE
P1
R/W
P1
OE
P1
BUSY
P1
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
18
117
116
IDT7052PQF
PQ132-1
(4)
132-Pin Plastic Quad Flatpack
Top View
(5,6)
50
51
83
84
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
CE
P4
R/W
P4
OE
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
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
6P2
I/O
7P2
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
2674 drw 03
CE
P2
R/W
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
OE
P3
CE
P3
R/W
P3
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
11/07/01
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
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. PQ132-1 package body is approximately
.95 in x .95 in x .14 in.
PN120-1 package body is approximately
14mm x 14mm x 1.4mm.
4. This package code is used to reference the package diagram.
5. This text does not indicate orientation of the actual part-marking
6. The side of the package containing pin1 may have a bevelled edge in place of the indicator dot..
N/C
I/O
6P1
I/O
7P1
N/C
V
CC
I/O
0P2
I/O
1P2
I/O
2P2
GND
I/O
3P2
I/O
4P2
I/O
5P2
V
CC
I/O
6P2
I/O
7P2
N/C
I/O
0P3
I/O
1P3
V
CC
I/O
2P3
I/O
3P3
I/O
4P3
GND
I/O
5P3
I/O
6P3
I/O
7P3
V
CC
I/O
0P4
I/P
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
N/C
N/C
OE
P2
BUSY
P2
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
CE
P1
R/W
P1
OE
P1
BUSY
P1
I/O
0P1
I/O
1P1
I/O
2P1
I/O
3P1
GND
I/O
4P1
I/O
5P1
N/C
N/C
IDT7052PF
PN120-1
(4)
120-Pin Thin Quad Flatpack
Top View
(5)
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
N/C
BUSY
P3
A
0P4
A
1P4
A
2P4
A
3P4
A
4P4
A
5P4
A
6P4
A
10P4
GND
A
7P4
A
8PR
A
9P4
N/C
CE
P4
R/W
P4
OE
P4
BUSY
P4
GND
I/O
7P4
I/O
6P4
I/O
5P4
GND
I/O
4P4
I/O
3P4
I/O
2PR
N/C
N/C
2674 drw 04
3
6.42
IDT7052S/L
High-Speed 2K x 8 FourPort™ Static RAM
Military, Industrial 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
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
Pin Name
Address Line s - Port 1
Address Line s - Port 2
Address Line s - Port 3
Address Line s - 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
Terminal Voltage
with Respect to
GND
Temperature
Under Bias
Storage
Temperature
DC Output Current
Commercial
& Industrial
-0.5 to +7.0
Military
-0.5 to +7.0
Unit
V
T
BIAS
T
STG
I
OUT
-55 to +125
-65 to +150
50
-65 to +135
-65 to +150
50
o
C
C
o
mA
2674 tbl 02
NOTES:
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 conditions for extended periods may affect
reliability.
2. V
TERM
must not exceed Vcc + 10% for more than 25% of the cycle time or 10ns
maximum, and is limited to < 20mA for the period of V
TERM
> V
CC
+ 10%.
Maximum Operating
Temperature and Supply Voltage
(1)
Grade
Military
Commercial
Industrial
Ambient
Temperature
-55
O
C to+125
O
C
0
O
C to +70
O
C
-40
O
C to +85
O
C
GND
0V
0V
0V
Vcc
5.0V
+
10%
5.0V
+
10%
5.0V
+
10%
2674 tbl 04
NOTES:
1. This is the parameter T
A
. This is the "instant on" case temperature.
NOTES:
1. All V
CC
pins must be connected to the power supply.
2. All GND pins must be connected to the ground supply
Recommended DC Operating
Conditions
Symbol
V
CC
Parameter
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
Min.
4.5
0
2.2
-0.5
(1)
Typ.
5.0
0
____
____
Max.
5.5
0
6.0
(2)
0.8
Unit
V
V
V
V
2674 tbl 05
Capacitance
(1)
Symbol
C
IN
C
OUT
GND
V
IH
(T
A
= +25°C, f = 1.0MHz) TQFP only
Parameter
Input Capacitance
Output Capacitance
Conditions
(2)
V
IN
= 0V
V
OUT
= 0V
Max.
9
10
Unit
pF
pF
2674 tbl 03
V
IL
NOTES:
1. V
IL
>
-1.5V for pulse width less than 10ns.
2. V
TERM
must not exceed Vcc + 10%.
NOTES:
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.
4
6.42
IDT7052S/L
High-Speed 2K x 8 FourPort™ Static RAM
Military, Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(1,5)
(V
CC
= 5.0V ± 10%)
7052X20
Com'l Only
Symbol
I
CC1
Parameter
Operating Power
Supply Current
(All Ports Active)
Condition
CE
= V
IL
Outputs Disabled
f = 0
(3)
Version
COM'L.
MIL. &
IND.
COM'L.
MIL. &
IND.
COM'L.
MIL. &
IND.
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
(3)
COM'L.
MIL. &
IND.
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
Typ.
(2)
150
150
____
____
7052X25
Com'l, Ind
& Military
Typ.
(2)
150
150
150
150
225
195
225
195
45
40
45
40
1.5
0.3
1.5
0.3
Max.
300
250
360
300
350
305
400
340
85
70
115
85
15
1.5
30
4.5
7052X35
Com'l &
Military
Typ.
(2)
150
150
150
150
210
180
210
180
40
35
40
35
1.5
0.3
1.5
0.3
Max.
300
250
360
300
335
290
395
330
75
60
110
80
15
1.5
30
4.5
2674 tbl 06
Max.
300
250
____
____
Unit
mA
I
CC2
Dynamic Operating
Current
(All Ports Active)
CE
= V
IL
Outputs Disabled
f = f
MAX
(4)
240
210
____
____
370
325
____
____
mA
I
SB
Standby Current
(All Ports - TTL Level
Inputs)
CE
= V
IH
f = f
MAX
(4)
70
60
____
____
95
80
____
____
mA
1.5
0.3
____
____
15
1.5
____
____
mA
NOTES:
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.
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(V
CC
= 5.0V ± 10%)
7052S
Symbol
|I
LI
|
|I
LO
|
V
OL
V
OH
Parameter
Input Leakage Current
(1)
Output Leakage Current
Output Low Voltage
Output High Voltage
Test Conditions
V
CC
= 5.5V, V
IN
= 0V to V
CC
CE
= V
IH
, V
OUT
= 0V to V
CC
I
OL
= 4mA
I
OH
= -4mA
Min.
___
7052L
Max.
10
10
0.4
___
Min.
___
Max.
5
5
0.4
___
Unit
µA
µA
V
V
2674 tbl 07
___
___
___
___
2.4
2.4
NOTE:
1. At Vcc < 2.0V input leakages are undefined.
5
6.42
嵌入式系统
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