HIGH-SPEED
8K x 8 DUAL-PORT
STATIC RAM
Features
x
x
IDT7005S/L
x
x
True Dual-Ported memory cells which allow simultaneous
reads of the same memory location
High-speed access
Military: 20/25/35/55/70ns (max.)
Industrial: 35/55ns (max.)
Commercial:15/17/20/25/35/55ns (max.)
Low-power operation
IDT7005S
Active: 750mW (typ.)
Standby: 5mW (typ.)
IDT7005L
Active: 700mW (typ.)
Standby: 1mW (typ.)
IDT7005 easily expands data bus width to 16 bits or more
using the Master/Slave select when cascading more than
x
x
x
x
x
x
x
x
x
x
one device
M/S = H for BUSY output flag on Master,
M/S = L for BUSY input on Slave
Interrupt Flag
On-chip port arbitration logic
Full on-chip hardware support of semaphore signaling
between ports
Fully asynchronous operation from either port
Devices are capable of withstanding greater than 2001V
electrostatic discharge
Battery backup operation2V data retention
TTL-compatible, single 5V (±10%) power supply
Available in 68-pin PGA, quad flatpack, PLCC, and a 64-pin
thin quad flatpack
Industrial temperature range (-40°C to +85°C) is available
for selected speeds
Functional Block Diagram
OE
L
CE
L
R/W
L
OE
R
CE
R
R/W
R
I/O
0L
- I/O
7L
I/O
Control
BUSY
L
A
12L
A
0L
(1,2)
I/O
0R
-I/O
7R
I/O
Control
BUSY
R
Address
Decoder
13
(1,2)
MEMORY
ARRAY
13
Address
Decoder
A
12R
A
0R
CE
L
OE
L
R/W
L
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
CE
R
OE
R
R/W
R
SEM
L
(2)
INT
L
NOTES:
1. (MASTER):
BUSY
is output; (SLAVE):
BUSY
is input.
2.
BUSY
outputs and
INT
outputs are non-tri-stated push-pull.
M/S
SEM
R
INT
R
(2)
2738 drw 01
JUNE 1999
1
©1998 Integrated Device Technology, Inc.
DSC 2738/11
IDT7005S/L
High-Speed 8K x 8 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
The IDT7005 is a high-speed 8K x 8 Dual-Port Static RAM. The
IDT7005 is designed to be used as a stand-alone 64K-bit Dual-Port RAM
or as a combination MASTER/SLAVE Dual-Port RAM for 16-bit-or-more
word systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach
in 16-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 CE permits the on-chip circuitry of each port to enter
Description
a very low standby power mode.
Fabricated using IDTs 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 500µW from a 2V battery.
The IDT7005 is packaged in a ceramic 68-pin PGA, 68-pin quad
flatpack, 68-pin PLCC and a 64-pin thin quad flatpack, (TQFP). Military
grade product is manufactured in compliance with the latest revision of MIL-
PRF-38535 QML making it ideally suited to military temperature applica-
tions demanding the highest level of performance and reliability.
Pin Configurations
(1,2,3)
INDEX
I/O
2L
I/O
3L
I/O
4L
I/O
5L
GND
I/O
6L
I/O
7L
V
CC
GND
I/O
0R
I/O
1R
I/O
2R
V
CC
I/O
3R
I/O
4R
I/O
5R
I/O
6R
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
I/O
1L
I/O
0L
N/C
OE
L
R/W
L
SEM
L
CE
L
N/C
N/C
V
CC
A
12L
A
11L
A
10L
A
9L
A
8L
A
7L
A
6L
9
8
7
6
5
4
3
2
1 68 67 66 65 64 63 62 61
60
59
58
57
56
IDT7005J or F
J68-1
(4)
F68-1
(4)
68 Pin PLCC / FLATPACK
Top View
(5)
55
54
53
52
51
50
49
48
47
46
45
44
26
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
INT
L
BUSY
L
GND
M/S
BUSY
R
INT
R
A
0R
A
1R
A
2R
A
3R
A
4R
2738 drw 02
,
R/W
L
SEM
L
I/O
1L
I/O
0L
OE
L
N/C
V
CC
A
12L
A
11L
A
10L
58
57
56
55
54
CE
L
I/O
7R
N/C
OE
R
R/W
R
SEM
R
CE
R
N/C
N/C
GND
A
12R
A
11R
A
10R
A
9R
A
8R
A
7R
A
6R
A
5R
INDEX
64
63
62
61
60
59
53
52
51
50
49
A
9L
A
8L
A
7L
A
6L
A
5L
NOTES:
1. All V
CC
pins must be connected to power supply.
2. All GND pins must be connected to ground supply.
3. J68-1 package body is approximately .95 in x .95 in x .12 in.
F68-1 package body is approximately .97 in x .97 in x .08 in.
PN64 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 oriention of the actual part-marking
17
18
19
20
21
23
24
25
26
27
28
29
30
31
22
16
32
I/O
2L
I/O
3L
I/O
4L
I/O
5L
GND
I/O
6L
I/O
7L
V
CC
GND
I/O
0R
I/O
1R
I/O
2R
V
CC
I/O
3R
I/O
4R
I/O
5R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
A
4L
A
3L
A
2L
A
1L
A
0L
INT
L
BUSY
L
GND
M/S
.
BUSY
R
INT
R
A
0R
A
1R
A
2R
A
3R
A
4R
7005PF
PN-64
(4)
64-Pin TQFP
Top View
(5)
I/O
6R
I/O
7R
OE
R
A
12R
A
11R
A
10R
A
9R
A
8R
A
7R
A
6R
R/W
R
SEM
R
CE
R
GND
N/C
A
5R
2738 drw 03
6.42
2
IDT7005S/L
High-Speed 8K x 8 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Pin Configurations
(1,2,3)
(con't.)
51
11
53
A
7L
55
A
9L
A
5L
52
A
6L
54
A
8L
50
A
4L
49
A
3L
48
A
2L
47
A
1L
46
44
42
A
0L
BUSY
L
M/S
40
38
INT
R
A
1R
36
A
3R
35
A
4R
32
A
7R
30
A
9R
28
A
11R
26
GND
24
N/C
34
A
5R
33
A
6R
31
A
8R
29
A
10R
27
A
12R
25
N/C
10
45
43
41
39
37
INT
L
GND
BUSY
R
A
0R
A
2R
09
08
57
56
A
11L
A
10L
59
58
V
CC
A
12L
61
N/C
60
N/C
07
IDT7005G
G68-1
(4)
68-Pin PGA
Top View
(5)
06
63
62
05
SEM
L
CE
L
04
65
64
OE
L
R/W
L
67
66
I/O
0L
N/C
1
3
68
I/O
1L
I/O
2L
I/O
4L
2
01
A
INDEX
22
23
SEM
R
CE
R
20
OE
R
5
7
9
11
13
15
GND I/O
7L
GND I/O
1R
V
CC
I/O
4R
6
8
10
12
14
16
I/O
6L
V
CC
I/O
0R
I/O
2R
I/O
3R
I/O
5R
D
E
F
G
H
J
21
R/W
R
.
03
02
18
19
I/O
7R
N/C
17
I/O
6R
K
L
2738 drw 04
4
I/O
3L
I/O
5L
B
C
NOTES:
1. All V
CC
pins must be connected to power supply.
2. All GND pins must be connected to ground supply.
3. Package body is approximately 1.18in x 1.18in x .16in.
4. This package code is used to reference the package diagram.
5. This text does not indicate oriention of the actual part-marking
Pin Names
Left Port
CE
L
R/W
L
OE
L
A
0L
- A
12L
I/O
0L
- I/O
7L
SEM
L
INT
L
BUSY
L
CE
R
R/W
R
OE
R
A
0R
- A
12R
I/O
0R
- I/O
7R
SEM
R
INT
R
BUSY
R
M/S
V
CC
GND
Right Port
Names
Chip Enable
Read/Write Enable
Output Enable
Address
Data Input/Output
Semaphore Enable
Interrupt Flag
Busy Flag
Master or Slave Select
Power
Ground
2738 tbl 01
6.42
3
IDT7005S/L
High-Speed 8K x 8 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Truth Table I: Non-Contention Read/Write Control
Inputs
(1)
Outputs
CE
H
L
L
X
R/W
X
L
H
X
OE
X
X
L
H
SEM
H
H
H
X
I/O
0-7
High-Z
DATA
IN
DATA
OUT
High-Z
Deselected: Power-Down
Write to Memory
Read Memory
Outputs Disabled
Mode
NOTE:
1. A
0L
A
12L
is not equal to A
0R
A
12R
2738 tbl 02
Truth Table II: Semaphore Read/Write Control
(1)
Inputs
(1)
Outputs
CE
H
H
L
R/W
H
↑
X
OE
L
X
X
SEM
L
L
L
I/O
0-7
DATA
OUT
DATA
IN
____
Mode
Read in Semaphore Flag Data Out
Write I/Oo into Semaphore Flag
Not Allowed
2738 tbl 03
NOTE:
1. There are eight semaphore flags written to via I/O
0
and read from I/O
0 -
I/O
7.
These eight semaphores are addressed by A
0
- A
2.
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
Maximum Operating Temperature
and Supply Voltage
(1,2)
Grade
Military
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
OV
Vcc
5.0V
+
10%
5.0V
+
10%
5.0V
+
10%
2738 tbl 05
T
BIAS
T
STG
I
OUT
-55 to +125
-55 to +125
50
-65 to +135
-65 to +150
50
o
C
C
Commercial
Industrial
o
mA
2738 tbl 04
NOTES:
1. This is the parameter T
A
.
2 Industrial temperature: for specific speeds, packages and powers contact
your sales office.
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 10%
maximum, and is limited to < 20mA for the period of V
TERM
> Vcc + 10%.
Recommended DC Operating
Conditions
Symbol
V
CC
GND
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
2738 tbl 06
Capacitance
(1)
(T
A
= +25°C, f = 1.0MHz)
Symbol
C
IN
C
OUT
Parameter
Input Capacitance
Output Capacitance
Conditions
(2)
V
IN
= 3dV
V
OUT
= 3dV
Max.
9
10
Unit
pF
pF
2738 tbl 07
V
IH
V
IL
NOTES:
1. V
IL
> -1.5V for pulse width less than 10ns.
2. V
TERM
must not exceed Vcc + 10%.
NOTES:
1. These parameters are determined by device characterization but are not
production tested (TQFP Package only).
2. 3dV references the interpolated capacitance when the input and output signals
switch from 0V to 3V or from 3V to 0V.
6.42
4
IDT7005S/L
High-Speed 8K x 8 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the 0perating
Temperature and Supply Voltage Range
(V
CC
= 5.0V ± 10%)
7005S
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.
___
___
___
7005L
Max.
10
10
0.4
___
Min.
___
___
___
Max.
5
5
0.4
___
Unit
µA
µA
V
V
2738 tbl 08
2.4
2.4
NOTE:
1. At Vcc < 2.0V input leakages are undefined.
Data Retention Characteristics Over All Temperature RangeS
(L Version Only)
(V
LC
= 0.2V, V
HC
= V
CC
- 0.2V)
Symbol
V
DR
I
CCDR
Parameter
V
CC
for Data Retention
Data Retention Current
V
CC
= 2V
CE
> V
HC
V
IN
> V
HC
or < V
LC
t
CDR
(3)
t
R
(3)
Chip Deselect to Data Retention Time
Operation Recovery Time
SEM
> V
HC
Mil. & Ind.
Com'l.
Test Condition
Min.
2.0
___
___
Typ.
(1)
___
Max.
___
Unit
V
µA
100
100
___
___
4000
1500
___
___
0
t
RC
(2)
ns
ns
2738 tbl 09
NOTES:
1. T
A
= +25°C, V
CC
= 2V, and are not production tested.
2. t
RC
= Read Cycle Time
3. This parameter is guaranteed by characterization, but is not production tested.
Data Retention Waveform
DATA RETENTION MODE
V
CC
4.5V
t
CDR
V
DR
CE
V
IH
V
IH
2738 drw 05
V
DR
> 2V
4.5V
t
R
6.42
5
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