HIGH-SPEED 64K x 8
SYNCHRONOUS
DUAL-PORT STATIC RAM
Features:
x
x
PRELIMINARY
IDT709089S/L
x
x
x
x
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
High-speed clock to data access
– Commercial: 9/12/15ns (max.)
Low-power operation
– IDT709089S
Active: 950mW (typ.)
Standby: 5mW (typ.)
– IDT709089L
Active: 950mW (typ.)
Standby: 1mW (typ.)
Flow-Through or Pipelined output mode on either port via
the
FT/PIPE
pin
Counter enable and reset features
Dual chip enables allow for depth expansion without
additional logic
x
x
x
x
Full synchronous operation on both ports
– 4ns setup to clock and 1ns hold on all control, data,
and address inputs
– Data input, address, and control registers
– Fast 9ns clock to data out in the Pipelined output mode
– Self-timed write allows fast cycle time
– 15ns cycle time, 66MHz operation in the Pipelined
output mode
TTL- compatible, single 5V (±10%) power supply
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
Available in 100-pin Thin Quad Flatpack (TQFP) package
Functional Block Diagram
R/
W
L
OE
L
R/
W
R
OE
R
1
0
0/1
1
0
0/1
CE
0L
CE
1L
CE
0R
CE
1R
FT
/PIPE
L
0/1
1
0
0
1
0/1
FT
/PIPE
R
I/O
0L
- I/O
7L
I/O
Control
I/O
Control
I/O
0R
- I/O
7R
A
15L
A
0L
CLK
L
Counter/
Address
Reg.
MEMORY
ARRAY
Counter/
Address
Reg.
A
15R
A
0R
CLK
R
ADS
L
CNTEN
L
CNTRST
L
ADS
R
CNTEN
R
CNTRST
R
3242 drw 01
FEBRUARY 2000
1
©2000 Integrated Device Technology, Inc.
DSC-3242/10
IDT709089S/L
High-Speed 64K x 8 Synchronous Dual-Port Static RAM
Preliminary
Industrial and Commercial Temperature Ranges
Description:
The IDT709089 is a high-speed 64K x 8 bit synchronous Dual-Port
RAM. The memory array utilizes Dual-Port memory cells to allow
simultaneous access of any address from both ports. Registers on control,
data, and address inputs provide minimal setup and hold times. The timing
latitude provided by this approach allows systems to be designed with very
short cycle times.
With an input data register, the IDT709089 has been optimized for
applications having unidirectional or bidirectional data flow in bursts.
An automatic power down feature, controlled by
CE
0
and CE
1,
permits
the on-chip circuitry of each port to enter a very low standby power
mode. Fabricated using IDT’s CMOS high-performance technology,
these devices typically operate on only 950mW of power.
Pin Configuration
(1,2,3)
CLK
R
CLK
L
GND
A
0R
A
1R
A
2R
A
3R
A
4R
A
5R
A
6R
NC
NC
Index
NC
NC
A
7L
A
8L
A
9L
A
10L
A
11L
A
12L
A
13L
A
14L
A
15L
NC
V
CC
NC
NC
NC
NC
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
75
2
74
3
73
4
72
1
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
NC
NC
A
6L
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
CNTEN
R
CNTEN
L
ADS
R
ADS
L
IDT709089PF
PN100-1
(4)
100-PIN TQFP
TOP VIEW
(5)
NC
NC
A
7R
A
8R
A
9R
A
10R
A
11R
A
12R
A
13R
A
14R
A
15R
NC
GND
NC
NC
NC
NC
CE
0L
CE
1L
CE
0R
CE
1R
CNTRST
L
R/
W
L
OE
L
FT
/PIPE
L
NC
NC
CNTRST
R
R/
W
R
OE
R
FT
/PIPE
R
GND
NC
3242 drw 02
51
25
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
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 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.
GND
NC
I/O
7
L
I/O
6L
I/O
5L
I/O
4L
I/O
3L
I/O
2L
GND
I/O
1L
I/O
0L
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
I/O
7R
NC
NC
NC
6.42
2
IDT709089S/L
High-Speed 64K x 8 Synchronous Dual-Port Static RAM
Preliminary
Industrial and Commercial Temperature Ranges
Pin Names
Left Port
Right Port
Names
Chip Enables
Read/Write Enable
Output Enable
Address
Data Input/Output
Clock
Address Strobe
Counter Enable
Counter Reset
Flow-Through/Pipeline
Power
Ground
3242 tbl 01
CE
0L
, CE
1L
R/
W
L
CE
0R
, CE
1R
R/
W
R
OE
L
A
0L
- A
15L
I/O
0L
- I/O
7L
CLK
L
OE
R
A
0R
- A
15R
I/O
0R
- I/O
7R
CLK
R
ADS
L
CNTEN
L
CNTRST
L
FT
/PIPE
L
ADS
R
CNTEN
R
CNTRST
R
FT
/PIPE
R
V
CC
GND
Truth Table I
Read/Write and Enable Control
(1,2,3)
OE
X
X
X
L
H
CLK
↑
↑
↑
↑
X
CE
0
H
X
L
L
L
CE
1
X
L
H
H
H
R/
W
X
X
L
H
X
I/O
0-7
High-Z
High-Z
D
IN
D
OUT
High-Z
Mode
Deselected
Deselected
Write
Read
Outputs Disabled
3242 tbl 02
NOTES:
1. "H" = V
IH,
"L" = V
IL,
"X" = Don't Care.
2.
ADS, CNTEN, CNTRST
= X.
3.
OE
is an asynchronous input signal.
Truth Table IIAddress Counter Control
(1,2)
Address
X
An
X
X
Previous
Address
X
X
An
An
CLK
↑
↑
↑
↑
ADS
H
L
(4)
H
H
CNTEN
H
H
H
L
(5)
CNTRST
L
H
H
H
I/O
(3)
D
I/O
(0)
D
I/O
(n)
D
I/O
(n)
D
I/O
(n+1)
Mode
Counter Reset to Address 0
External Address Utilized
External Address Blocked—Counter Disabled
Counter Enable—Internal Address Generation
3242 tbl 03
NOTES:
1. "H" = V
IH,
"L" = V
IL,
"X" = Don't Care.
2.
CE
0
and
OE
= V
IL
; CE
1
and R/W = V
IH
.
3. Outputs configured in Flow-Through Output mode; if outputs are in Pipelined mode the data out will be delayed by one cycle.
4.
ADS
is independent of all other signals including
CE
0
and CE
1
.
5. The address counter advances if
CNTEN
= V
IL
on the rising edge of CLK, regardless of all other signals including
CE
0
and CE
1
.
3
6.42
IDT709089S/L
High-Speed 64K x 8 Synchronous Dual-Port Static RAM
Preliminary
Industrial and Commercial Temperature Ranges
Recommended Operating
Recommended DC Operating
Temperature and Supply Voltage
(1,2)
Conditions
Grade
Commercial
Industrial
Ambient
Temperature
0
O
C to +70
O
C
-40
O
C to +85
O
C
GND
0V
0V
Vcc
5.0V
+
10%
5.0V
+
10%
3242 tbl 04
Symbol
V
CC
GND
V
IH
Parameter
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
Min.
4.5
0
2.2
-0.5
(2)
Typ.
5.0
0
____
Max.
5.5
0
6.0
(1)
0.8
Unit
V
V
V
V
3242 tbl 05
NOTES:
1. This is the parameter T
A
.
2. Industrial temperature: for specific speeds, packages and powers contact
your sales office.
V
IL
____
NOTES:
1. V
TERM
must not exceed V
CC
+ 10%.
2. V
IL
> -1.5V for pulse width less than 10ns.
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
Capacitance
(1)
Symbol
C
IN
C
OUT
(3)
Parameter
Input Capacitance
(T
A
= +25°C, f = 1.0MH
z
)
Conditions
(2)
V
IN
= 3dV
V
OUT
= 3dV
Max.
9
10
Unit
pF
pF
3242 tbl 07
Output Capacitance
T
BIAS
T
STG
I
OUT
-55 to +125
-55 to +125
50
o
C
C
o
mA
3242 tbl 06
NOTES:
1. These parameters are determined by device characterization, but are not
production tested.
2. 3dV references the interpolated capacitance when the input and output
switch from 0V to 3V or from 3V to 0V.
3. C
OUT
also references C
I/O
.
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 V
cc
+ 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%.
6.42
4
IDT709089S/L
High-Speed 64K x 8 Synchronous Dual-Port Static RAM
Preliminary
Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(V
CC
= 5.0V ± 10%)
709089S/L
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
Min.
___
Max.
10
10
0.4
___
Unit
µA
µA
V
V
3242 tbl 08
CE
0
= V
IH
or CE
1
= V
IL
, V
OUT
= 0V to V
CC
I
OL
= +4mA
I
OH
= -4mA
___
___
2.4
NOTE:
1. At Vcc < 2.0V input leakages are undefined.
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(6,7)
(V
CC
= 5V ± 10%)
709089X9
Com'l Only
Symbol
I
CC
Parameter
Dynamic Operating
Current
(Both Ports Active)
Test Condition
Version
COM'L
IND
COM'L
IND
I
SB2
Standby Current
(One Port - TTL
Level Inputs)
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
Typ.
(4)
210
210
____
____
709089X12
Com'l Only
Typ.
(4)
200
200
____
____
709089X15
Com'l Only
Typ.
(4)
190
190
____
____
Max.
390
350
____
____
Max.
345
305
____
____
Max.
325
285
____
____
Unit
mA
CE
L
and
CE
R
= V
IL
Outputs Open
f = f
MAX
(1)
I
SB1
Standby Current
(Both Ports - TTL
Level Inputs)
CE
L
=
CE
R
= V
IH
f = f
MAX
(1)
50
50
____
____
135
115
____
____
50
50
____
____
100
90
____
____
50
50
____
____
110
90
____
____
mA
Active Port Outputs
Open,
f=f
MAX
(1)
Both Ports
CE
R
and
CE
L
> V
CC
- 0.2V
V
IN
> V
CC
- 0.2V or
V
IN
< 0.2V, f = 0
(2)
CE
"A"
= V
IL
and
CE
"B"
= V
IH
(3)
COM'L
IND
COM'L
IND
COM'L
IND
140
140
____
____
270
240
____
____
130
130
____
____
230
200
____
____
120
120
____
____
220
190
____
____
mA
I
SB3
Full Standby Current
(Both Ports -
CMOS Level Inputs)
1.0
0.2
____
____
15
5
____
____
1.0
0.2
____
____
15
5
____
____
1.0
0.2
____
____
15
5
____
____
mA
I
SB4
Full Standby Current
(One Port -
CMOS Level Inputs)
V
IN
> V
CC
- 0.2V or
V
IN
< 0.2V, Active Port
Outputs Open, f = f
MAX
(1)
CE
"A"
< 0.2V and
CE
"B"
> V
CC
- 0.2V
(5)
130
130
____
____
245
225
____
____
120
120
____
____
205
185
____
____
110
110
____
____
195
175
____
____
mA
3242 tbl 09
NOTES:
1. At f = f
MAX
, address and control lines (except Output Enable) are cycling at the maximum frequency clock cycle of 1/t
CYC
, using "AC TEST CONDITIONS" at input levels of
GND to 3V.
2. f = 0 means no address, clock, or control lines change. Applies only to input at CMOS level standby.
3. Port "A" may be either left or right port. Port "B" is the opposite from port "A".
4. Vcc = 5V, TA = 25°C for Typ, and are not production tested. I
CC DC
(f=0) = 150mA (Typ).
5.
CE
X
= V
IL
means
CE
0X
= V
IL
and CE
1X
= V
IH
CE
X
= V
IH
means
CE
0X
= V
IH
or CE
1X
= V
IL
CE
X
< 0.2V means
CE
0X
< 0.2V and CE
1X
> V
CC
- 0.2V
CE
X
> V
CC
- 0.2V means
CE
0X
> V
CC
- 0.2V or CE
1X
< 0.2V
"X" represents "L" for left port or "R" for right port.
6. 'X' in part numbers indicate power (S or L).
7. Industrial temperature: for specific speeds, packages and powers contact your sales office.
5
6.42
无线连接
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
