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2000 Integrated Device Technology, Inc.
APRIL 2000
DSC 2740/10
IDT7024S/L
HIGH-SPEED
4K x 16 DUAL-PORT
STATIC RAM
x
x
x
x
x
IDT7024 easily expands data bus width to 32 bits or more
using the Master/Slave select when cascading more than
one device
x
x
x
x
x
M/
S = H for BUSY output flag on Master
M/
S = L for BUSY input on Slave
x
x
x
x
x
Interrupt Flag
x
x
x
x
x
On-chip port arbitration logic
x
x
x
x
x
Full on-chip hardware support of semaphore signaling
between ports
x
x
x
x
x
Fully asynchronous operation from either port
x
x
x
x
x
Battery backup operation--2V data retention
x
x
x
x
x
TTL-compatible, single 5V (10%) power supply
x
x
x
x
x
Available in 84-pin PGA, Flatpack, PLCC, and 100-pin Thin
Quad Flatpack
x
x
x
x
x
Industrial temperature range (40C to +85C) is available
for selected speeds
Functional Block Diagram
Features
x
x
x
x
x
True Dual-Ported memory cells which allow simultaneous
reads of the same memory location
x
x
x
x
x
High-speed access
Military: 20/25/35/55/70ns (max.)
Industrial: 55ns (max.)
Commercial: 15/17/20/25/35/55ns (max.)
x
x
x
x
x
Low-power operation
IDT7024S
Active: 750mW (typ.)
Standby: 5mW (typ.)
IDT7024L
Active: 750mW (typ.)
Standby: 1mW (typ.)
x
x
x
x
x
Separate upper-byte and lower-byte control for multiplexed
bus compatibility
I/O
Control
Address
Decoder
MEMORY
ARRAY
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
Address
Decoder
I/O
Control
R/
W
L
BUSY
L
A
11L
A
0L
2740 drw 01
UB
L
LB
L
CE
L
OE
L
I/O
8L
-I/O
15L
I/O
0L
-I/O
7L
CE
L
OE
L
R/
W
L
SEM
L
INT
L
M/
S
R/
W
R
BUSY
R
UB
R
LB
R
CE
R
OE
R
I/O
8R
-I/O
15R
I/O
0R
-I/O
7R
A
11R
A
0R
R/
W
R
SEM
R
INT
R
CE
R
OE
R
(2)
(1,2)
(1,2)
(2)
12
12
NOTES:
1. (MASTER):
BUSY is output; (SLAVE): BUSY is input.
2.
BUSY outputs and INT outputs are non-tri-stated push-pull.
6.42
IDT7024S/L
High-Speed 4K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges
2
Description
The IDT7024 is a high-speed 4Kx 16 Dual-Port Static RAM. The
IDT7024 is designed to be used as a stand-alone 64K-bit Dual-Port RAM
or as a combination MASTER/SLAVE Dual-Port RAM for 32-bit or more
word systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach
in 32-bit or wider memory system applications results in full-speed, error-
free operation without the need for additional discrete logic.
This device provides two independent ports with separate control,
address, and I/O pins that permit independent, asynchronous access for
reads or writes to any location in memory. An automatic power down
feature controlled by chip enable (
CE) permits the on-chip circuitry of each
Pin Configurations
(1,2,3)
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. J84-1 package body is approximately 1.15 in x 1.15 in x .17 in.
F84-2 package body is approximately 1.17 in x 1.17 in x .11 in.
PN100-1 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.
port to enter a very low standby power mode.
Fabricated using IDT's CMOS high-performance technology, these
devices typically operate on only 750mW of power. Low-power (L)
versions offer battery backup data retention capability with typical power
consumption of 500W from a 2V battery.
The IDT7024 is packaged in a ceramic 84-pin PGA, an 84-pin Flatpack
and PLCC, and a 100-pin TQFP. 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.
2740 drw 02
14
15
16
17
18
19
20
INDEX
21
22
23
24
11 10 9
8
7
6
5
4
3
2
1 84 83
33 34 35 36 37 38 39 40 41 42 43 44 45
V
CC
GND
I/O
8L
A
7L
13
12
25
26
27
28
29
30
31
32
46 47 48 49 50 51 52 53
72
71
70
69
68
67
66
65
64
63
62
73
74
61
60
59
58
57
56
55
54
82 81 80 79 78 77 76 75
GND
BUSY
L
GND
IDT7024J or F
J84-1
(4)
F84-2
(4)
84-Pin PLCC / Flatpack
Top View
(5)
INT
L
M/
S
INT
R
I/O
9L
I/O
10L
I/O
11L
I/O
12L
I/O
13L
I/O
14L
I/O
15L
I/O
0R
I/O
1R
I/O
2R
V
CC
I/O
3R
I/O
4R
I/O
5R
I/O
6R
I/O
7R
I/O
8R
A
6L
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
BUSY
R
A
0R
A
2R
A
3R
A
4R
A
5R
A
6R
A
1R
I
/
O
7
L
I
/
O
6
L
I
/
O
5
L
I
/
O
4
L
I
/
O
3
L
I
/
O
2
L
V
C
C
R
/
W
L
S
E
M
L
C
E
L
U
B
L
L
B
L
N
/
C
A
1
1
L
G
N
D
I
/
O
1
L
I
/
O
0
L
A
1
0
L
A
9
L
A
8
L
O
E
L
I
/
O
9
R
I
/
O
1
0
R
I
/
O
1
1
R
I
/
O
1
2
R
I
/
O
1
3
R
I
/
O
1
4
R
G
N
D
I
/
O
1
5
R
G
N
D
N
/
C
A
1
1
R
A
1
0
R
A
9
R
A
8
R
A
7
R
O
E
R
R
/
W
R
S
E
M
R
C
E
R
U
B
R
L
B
R
,
Index
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
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
10099 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
IDT7024PF
PN100-1(4)
100-Pin TQFP
Top View(5)
N/C
N/C
N/C
N/C
I/O
10L
I/O
11L
I/O
12L
I/O
13L
GND
I/O
14L
I/O
15L
V
CC
GND
I/O
0R
I/O
1R
I/O
2R
I/O
3R
V
CC
I/O
4R
I/O
5R
I/O
6R
N/C
N/C
N/C
N/C
2740 drw 03
N/C
N/C
N/C
N/C
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
INT
L
GND
M/
S
BUSY
R
INT
R
A
0R
N/C
N/C
N/C
N/C
BUSY
L
A
1R
A
2R
A
3R
A
4R
I
/
O
9
L
I
/
O
8
L
I
/
O
7
L
I
/
O
6
L
I
/
O
5
L
I
/
O
4
L
I
/
O
3
L
I
/
O
2
L
G
N
D
I
/
O
1
L
I
/
O
0
L
O
E
L
V
C
C
R
/
W
L
S
E
M
L
C
E
L
U
B
L
L
B
L
N
/
C
A
1
1
L
A
1
0
L
A
9
L
A
8
L
A
7
L
A
6
L
I
/
O
7
R
I
/
O
8
R
I
/
O
9
R
I
/
O
1
0
R
I
/
O
1
1
R
I
/
O
1
2
R
I
/
O
1
3
R
I
/
O
1
4
R
G
N
D
I
/
O
1
5
R
O
E
R
R
/
W
R
S
E
M
R
C
E
R
U
B
R
L
B
R
G
N
D
N
/
C
A
1
1
R
A
1
0
R
A
9
R
A
8
R
A
7
R
A
6
R
A
5
R
6.42
IDT7024S/L
High-Speed 4K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges
3
Pin Names
Maximum Operating Temperature
and Supply Voltage
(1,2)
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 1.12 in x 1.12 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.
Pin Configurations
(1,2,3)
(con't.)
NOTES:
1. This is the parameter T
A
.
2. Industrial temperature: for specific speeds, packages and powers contact your
sales office.
2740 drw 04
I/O
7L
63
61
60
58
55
54
51
48
46
45
66
67
69
72
75
76
79
81
82
83
1
2
5
7
8
11
10
12
14
17
20
23
26
28
29
32
31
33
35
38
41
43
IDT7024G
G84-3(4)
84-Pin PGA
Top View(5)
A
B
C
D
E
F
G
H
J
K
L
42
59
56
49
50
40
25
27
30
36
34
37
39
84
3
4
6
9
15
13
16
18
22
24
19
21
68
71
70
77
80
UB
R
CE
R
GND
11
10
09
08
07
06
05
04
03
02
01
64
65
62
57
53
52
47
44
73
74
78
GND
GND
R/
W
R
OE
R
LB
R
GND
GND
SEM
R
N/C
UB
L
CE
L
R/
W
L
OE
L
GND
SEM
L
V
CC
LB
L
INT
R
BUSY
R
BUSY
L
M/
S
INT
L
A
11L
N/C
Index
I/O
5L
I/O
4L
I/O
2L
I/O
0L
I/O
10L
I/O
8L
I/O
6L
I/O
3L
I/O
1L
I/O
11L
I/O
9L
I/O
13L
I/O
12L
I/O
15L
I/O
14L
I/O
0R
A
9L
A
10L
A
8L
A
7L
A
5L
A
6L
A
4L
A
3L
A
2L
A
0L
A
1L
A
0R
A
2R
A
1R
A
5R
A
3R
A
6R
A
4R
A
9R
A
7R
A
8R
A
10R
A
11R
I/O
1R
I/O
2R
V
CC
I/O
3R
I/O
4R
I/O
5R
I/O
7R
I/O
6R
I/O
9R
I/O
8R
I/O
11R
I/O
10R
I/O
12R
I/O
13R
I/O
14R
I/O
15R
V
CC
Left Port
Right Port
Names
CE
L
CE
R
Chip Enable
R/
W
L
R/
W
R
Read/Write Enable
OE
L
OE
R
Output Enable
A
0L
- A
11L
A
0R
- A
11R
Address
I/O
0L
- I/O
15L
I/O
0R
- I/O
15R
Data Input/Output
SEM
L
SEM
R
Semaphore Enable
UB
L
UB
R
Upper Byte Select
LB
L
LB
R
Lower Byte Select
INT
L
INT
R
Interrupt Flag
BUSY
L
BUSY
R
Busy Flag
M/
S
Master or Slave Select
V
CC
Power
GND
Ground
2740 tbl 01
Grade
Ambient
Temperature
GND
Vcc
Military
-55
O
C to +125
O
C
0V
5.0V
+
10%
Commercial
0
O
C to +70
O
C
0V
5.0V
+
10%
Industrial
-40
O
C to +85
O
C
0V
5.0V
+
10%
2740 tbl 02
6.42
IDT7024S/L
High-Speed 4K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges
4
Truth Table I: Non-Contention Read/Write Control
Recommended DC Operating
Conditions
Truth Table II: Semaphore Read/Write Control
(1)
Absolute Maximum Ratings
(1)
NOTE:
1. There are eight semaphore flags written to via I/O
0
and read from all of the I/O's (I/O
0
- I/O
15
).
These eight semaphores are addressed by A
0
- A
2
.
NOTE:
1. A
0L
-- A
11L
A
0R
-- A
11R
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 over V
TERM
>
Vcc + 10%
.
NOTES:
1. V
IL
> -1.5V for pulse width less than 10ns.
2. V
TERM
must not exceed Vcc + 10%.
Inputs
(1)
Outputs
Mode
CE
R/
W
OE
UB
LB
SEM
I/O
8-15
I/O
0-7
H
X
X
X
X
H
High-Z
High-Z
Deselcted: Power-Down
X
X
X
H
H
H
High-Z
High-Z
Both Bytes Deselected
L
L
X
L
H
H
DATA
IN
High-Z
Write to Upper Byte Only
L
L
X
H
L
H
High-Z
DATA
IN
Write to Lower Byte Only
L
L
X
L
L
H
DATA
IN
DATA
IN
Write to Both Bytes
L
H
L
L
H
H
DATA
OUT
High-Z
Read Upper Byte Only
L
H
L
H
L
H
High-Z
DATA
OUT
Read Lower Byte Only
L
H
L
L
L
H
DATA
OUT
DATA
OUT
Read Both Bytes
X
X
H
X
X
X
High-Z
High-Z
Outputs Disabled
2740 tbl 03
Inputs
(1)
Outputs
Mode
CE
(2)
R/
W
OE
UB
LB
SEM
I/O
8-15
I/O
0-7
H
H
L
X
X
L
DATA
OUT
DATA
OUT
Read Semaphore Flag Data Out
X
H
L
H
H
L
DATA
OUT
DATA
OUT
Read Semaphore Flag Data Out
H
X
X
X
L
DATA
IN
DATA
IN
Write I/O
0
into Semaphore Flag
X
X
H
H
L
DATA
IN
DATA
IN
Write I/O
0
into Semaphore Flag
L
X
X
L
X
L
____
____
Not Allowed
L
X
X
X
L
L
____
____
Not Allowed
2740 tbl 04
Symbol
Rating
Commercial
& Industrial
Military
Unit
V
TERM
(2)
Terminal Voltage
with Respect
to GND
-0.5 to +7.0
-0.5 to +7.0
V
T
BIAS
Temperature
Under Bias
-55 to +125
-65 to +135
o
C
T
STG
Storage
Temperature
-55 to +125
-65 to +150
o
C
I
OUT
DC Output
Current
50
50
mA
2740 tbl 05
Symbol
Parameter
Min.
Typ.
Max.
Unit
V
CC
Supply Voltage
4.5
5.0
5.5
V
GND
Ground
0
0
0
V
V
IH
Input High Voltage
2.2
____
6.0
(2)
V
V
IL
Input Low Voltage
-0.5
(1)
____
0.8
V
2740 tbl 06
6.42
IDT7024S/L
High-Speed 4K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges
5
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(V
CC
= 5.0V 10%)
NOTES:
1. This parameter are determined by device characterization, but is not
production tested.
2. 3dV references the interpolated capacitance when the input and
output signals switch from 0V to 3V or from 3V to 0V.
Capacitance
(T
A
= +25C, f = 1.0MHz)
(1)
NOTES:
1. 'X' in part number indicates power rating (S or L)
2. V
CC
= 5V, T
A
= +25C, and are not production tested. I
CC DC
= 120mA (TYP.)
3. At f = f
MAX
,
address and I/O'
S
are cycling at the maximum frequency read cycle of 1/t
RC
, and using "AC Test Conditions" of input levels of GND to 3V.
4. f = 0 means no address or control lines change.
5. Port "A" may be either left or right port. Port "B" is the opposite from port "A".
6. Industrial temperature: for specific speeds, packages and powers contact your sales office.
NOTE:
1. At Vcc < 2.0V input leakages are undefined.
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(1,6)
(V
CC
= 5.0V 10%)
Symbol
Parameter
Conditions
(2)
Max.
Unit
C
IN
Input Capacitance
V
IN
= 3dV
9
pF
C
OUT
Output Capacitance
V
OUT
= 3dV
10
pF
2740 tbl 07
Sym bol
Param eter
Test Conditions
7024S
7024L
Unit
Min.
Max.
Min.
Max.
|I
LI
|
Inp ut Le akag e Curre nt
(1)
V
CC
= 5.5V, V
IN
= 0V to V
CC
___
10
___
5
A
|I
LO
|
Outp ut Le akag e Curre nt
+-
= V
IH
, V
OUT
= 0V to V
CC
___
10
___
5
A
V
OL
Outp ut Lo w Vo ltag e
I
OL
= + 4m A
___
0.4
___
0.4
V
V
OH
Outp ut Hig h Vo ltag e
I
OH
= -4m A
2.4
___
2.4
___
V
2740 tbl 08
7024X15
Com'l Only
7024X17
Com'l Only
7024X20
Com'l &
Military
7024X25
Com'l &
Military
Symbol
Parameter
Test Condition
Version
Typ.
(2)
Max.
Typ.
(2)
Max.
Typ.
(2)
Max.
Typ.
(2)
Max.
Unit
I
CC
Dynamic Operating
Current
(Both Ports Active)
CE = V
IL
,
Outputs Open
SEM = V
IH
f = f
MAX
(3)
COM'L
S
L
170
170
310
260
170
170
310
260
160
160
290
240
155
155
265
220
mA
MIL &
IND
S
L
____
____
____
____
____
____
____
____
160
160
370
320
155
155
340
280
I
SB1
Standby Current
(Both Ports - TTL
Level Inputs)
CE
R
=
CE
L
= V
IH
SEM
R
=
SEM
L
= V
IH
f = f
MAX
(3)
COM'L
S
L
20
20
60
50
20
20
60
50
20
20
60
50
16
16
60
50
mA
MIL &
IND
S
L
____
____
____
____
____
____
____
____
20
20
90
70
16
16
80
65
I
SB2
Standby Current
(One Port - TTL
Level Inputs)
CE
"A"
= V
IL
and
CE
"B"
= V
IH
(5)
Active Port Outputs Open,
f=f
MAX
(3)
SEM
R
=
SEM
L
= V
IH
COM'L
S
L
105
105
190
160
105
105
190
160
95
95
180
150
90
90
170
140
mA
MIL &
IND
S
L
____
____
____
____
____
____
____
____
95
95
240
210
90
90
215
180
I
SB3
Full Standby Current
(Both Ports -
CMOS Level Inputs)
Both Ports
CE
L
and
CE
R
> V
CC
- 0.2V,
V
IN
> V
CC
- 0.2V or
V
IN
< 0.2V, f = 0
(4)
SEM
R
=
SEM
L
>
V
CC
- 0.2V
COM'L
S
L
1.0
0.2
15
5
1.0
0.2
15
5
1.0
0.2
15
5
1.0
0.2
15
5
mA
MIL &
IND
S
L
____
____
____
____
____
____
____
____
1.0
0.2
30
10
1.0
0.2
30
10
I
SB4
Full Standby Current
(One Port -
CMOS Level Inputs)
CE
"A"
< 0.2V and
CE
"B"
> V
CC
- 0.2V
(5)
SEM
R
=
SEM
L
> V
CC
- 0.2V
V
IN
> V
CC
- 0.2V or V
IN
< 0.2V
Active Port Outputs Open,
f = f
MAX
(3)
COM'L
S
L
100
100
170
140
100
100
170
140
90
90
155
130
85
85
145
120
mA
MIL &
IND
S
L
____
____
____
____
____
____
____
____
90
90
225
200
85
85
200
170
2740 tbl 09a