HIGH-SPEED
4K x 8 FourPort
TM
STATIC RAM
◆
IDT7054S/L
Features
◆
◆
◆
◆
◆
◆
◆
High-speed access
– Commercial: 20/25/35ns (max.)
– Industrial: 25ns (max.)
Low-power operation
– IDT7054S
Active: 750mW (typ.)
Standby: 7.5mW (typ.)
– IDT7054L
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, and P4
TTL-compatible; single 5V (±10%) power supply
Available in 128 pin Thin Quad Flatpack package
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
Green parts available, see ordering information
Description
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 arbitrated or withstand contention when all ports simulta-
neously access the same FourPort RAM location.
The IDT7054 provides four independent ports with separate control,
Functional Block Diagram
R/
W
P1
CE
P1
OE
P1
CE
P4
R/
W
P4
OE
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
PORT 2
ADDRESS
DECODE
LOGIC
MEMORY
ARRAY
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
OE
P2
CE
P2
R/
W
P2
COLUMN
I/O
COLUMN
I/O
I/O
0P3
-I/O
7P3
OE
P3
CE
P3
R/
W
P3
3241 drw 01
FEBRUARY 2015
1
©2015 Integrated Device Technology, Inc.
DSC 3241/13
IDT7054S/L
High-Speed 4K x 8 FourPort™ Static RAM
Industrial and Commercial Temperature Ranges
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 CMOS high-performance technology, this FourPort
SRAM typically operates on only 750mW of power.
The IDT7054 is packaged in a 128-pin Thin Quad Flatpack (TQFP).
Pin Configuration
(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. Package body is approximately 14mm x 20mm 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.
6.42
2
IDT7054S/L
High-Speed 4K x 8 FourPort™ Static RAM
Industrial 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
CE
P1
CE
P2
CE
P3
CE
P4
OE
P1
OE
P2
OE
P3
OE
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 Enab le - Port 1
Chip Enab le - Port 2
Chip Enab le - Port 3
Chip Enab le - Port 4
Output Enable - Port 1
Output Enable - Port 2
Output Enable - Port 3
Output Enable - Port 4
Power
3241 tbl 01
Capacitance
(1)
Symbol
C
IN
C
OUT
Parameter
Input Capacitance
Output
Capacitance
(T
A
= +25°C, f = 1.0MHz) TQFP ONLY
Conditions
(2)
V
IN
= 0V
V
OUT
= 0V
Max.
9
10
Unit
pF
pF
3241 tbl 03
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.
Maximum Operating Temperature
and Supply Voltage
(1)
Grade
Commercial
Industrial
Ambient
Temperature
0
°
C to +70
°
C
-40°C to +85°C
GND
0V
0V
Vcc
5.0V
+
10%
5.0V
+
10%
3241 tbl 04
NOTES:
1. This is the parameter T
A
. This is the "instant on" case temperature.
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
Unit
V
NOTES:
1. All V
CC
pins must be connected to the power supply.
2. All GND pins must be connected to the ground supply.
T
BIAS
T
STG
I
OUT
-55 to +125
-65 to +150
50
o
C
C
o
mA
3241 tbl 05
Recommended DC Operating
Conditions
Symbol
V
CC
GND
V
IH
V
IL
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
3241 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%.
NOTES:
1. V
IL
>
-1.5V for pulse width less than 10ns.
2. V
TERM
must not exceed Vcc + 10%.
6.42
3
IDT7054S/L
High-Speed 4K x 8 FourPort™ Static RAM
Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(1,5)
(V
CC
= 5.0V ± 10%)
7054X20
Com'l Only
Symbol
I
CC1
7054X25
Com'l & Ind
TYP.
(2)
150
150
150
150
225
195
225
195
60
50
60
50
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
7054X35
Com'l Only
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
Unit
mA
mA
mA
mA
mA
mA
mA
mA
3241 tbl 06
Parameter
Operating Power
Supply Current
(All Ports Active)
Condition
CE
= V
IL
Outputs Disabled
f = 0
(3)
Version
COM'L.
IND.
COM'L.
IND.
COM'L.
IND.
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
TYP.
(2)
150
150
____
____
Max.
300
250
____
____
I
CC2
Dynamic Operating
Current
(All Ports Active)
CE
= V
IL
Outputs Disabled
f = f
MAX
(4)
240
210
____
____
370
325
____
____
I
SB
Standby Current
(All Ports - TTL Level
Inputs)
CE
= V
IH
f = f
MAX
(4)
70
60
____
____
95
80
____
____
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.
IND.
1.5
0.3
____
____
15
1.5
____
____
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%)
7054S
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.
___
___
___
7054L
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.
6.42
4
IDT7054S/L
High-Speed 4K x 8 FourPort™ Static RAM
Industrial and Commercial Temperature Ranges
AC Test Conditions
Input Pulse Levels
Input Rise/Fall Times
Input Timing Reference Levels
Output Reference Levels
Output Load
GND to 3.0V
3ns Max.
1.5V
1.5V
Figures 1 and 2
3241 tbl 08
5V
893Ω
DATA
OUT
347Ω
30pF
DATA
OUT
347Ω
5V
893Ω
5pF*
,
3241 drw 04
Figure 1. AC Output Test Load
Figure 2. Output Test Load
(for t
LZ
, t
HZ
, t
WZ
, t
OW
)
*Including scope and jig
Timing Waveform of Read Cycle No. 1, Any Port
(1)
t
RC
ADDRESS
t
AA
t
OH
DATA
OUT
PREVIOUS DATA VALID
t
OH
DATA VALID
3241 drw 05
NOTE:
1. R/W = V
IH
,
OE
= V
IL
, and
CE
= V
IL
.
6.42
5
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