HIGH-SPEED 64/32K x 8
SYNCHRONOUS
DUAL-PORT STATIC RAM
Features:
◆
◆
IDT709089/79S/L
◆
◆
◆
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
High-speed clock to data access
– Commercial: 6/7/9/12/15ns (max.)
– Industrial: 12ns (max.)
Low-power operation
– IDT709089/79S
Active: 950mW (typ.)
Standby: 5mW (typ.)
– IDT709089/79L
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
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 6.5ns clock to data out in the Pipelined output mode
– Self-timed write allows fast cycle time
– 10ns cycle time, 100MHz 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
CE
0L
CE
1L
R/W
R
OE
R
CE
0R
CE
1R
1
0
0/1
1
0
0/1
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
(1)
A
0L
CLK
L
ADS
L
CNTEN
L
CNTRST
L
Counter/
Address
Reg.
MEMORY
ARRAY
Counter/
Address
Reg.
A
15R
(1)
A
0R
CLK
R
ADS
R
CNTEN
R
CNTRST
R
3242 drw 01
.
NOTE:
1. A
15
X
is a NC for IDT709079.
JUNE 2004
1
©2004 Integrated Device Technology, Inc.
DSC-3242/12
IDT709089/79S/L
High-Speed 64/32K x 8 Synchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Description:
The IDT709089/79 is a high-speed 64/32K 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 IDT709089/79 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)
NC
NC
A
6L
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
CNTEN
L
CLK
L
ADS
L
GND
ADS
R
CLK
R
CNTEN
R
A
0R
A
1R
A
2R
A
3R
A
4R
A
5R
A
6R
NC
NC
10099 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
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
08/19/03
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
CE
0L
CE
1L
CNTRST
L
R/W
L
OE
L
FT/PIPE
L
NC
NC
IDT709089/79PF
PN100-1
(5)
100-PIN TQFP
TOP VIEW
(6)
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
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
0R
CE
1R
CNTRST
R
R/W
R
OE
R
FT/PIPE
R
GND
NC
3242 drw 02
NOTES:
1. A
15X
is a NC for IDT709079.
2. All V
CC
pins must be connected to power supply.
3. All GND pins must be connected to ground supply.
4. Package body is approximately 14mm x 14mm x 1.4mm.
5. This package code is used to reference the package diagram.
6. 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
IDT709089/79S/L
High-Speed 64/32K x 8 Synchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Pin Names
Left Port
CE
0L
, CE
1L
R/W
L
OE
L
A
0L
- A
15L
(1)
I/O
0L
- I/O
7L
CLK
L
ADS
L
CNTEN
L
CNTRST
L
FT/PIPE
L
Right Port
CE
0R
, CE
1R
R/W
R
OE
R
A
0R
- A
15R
(1)
I/O
0R
- I/O
7R
CLK
R
ADS
R
CNTEN
R
CNTRST
R
FT/PIPE
R
V
CC
GND
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
NOTE:
1. A
15X
is a NC for IDT709079.
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 II—Address Counter Control
(1,2)
External
Address
An
X
X
X
Previous
Internal
Address
X
An
An + 1
X
Internal
Address
Used
An
An + 1
An + 1
A
0
CLK
↑
↑
↑
↑
ADS
L
(4)
H
H
X
CNTEN
X
L
(5)
H
X
CNTRST
H
H
H
L
(4)
I/O
(3)
D
I/O
(n)
D
I/O
(n+1)
D
I/O
(n+1)
D
I/O
(0)
External Address Used
Counter Enabled—Internal Address generation
External Address Blocked—Counter disabled (An + 1 reused)
Counter Reset to Address 0
5640 tbl 03
MODE
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
.
6.42
3
IDT709089/79S/L
High-Speed 64/32K x 8 Synchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Recommended Operating
Recommended DC Operating
(1)
Temperature and Supply Voltage
Conditions
Grade
Commercial
Industrial
Ambient
Temperature
0
O
C to +70
O
C
-40
O
C to +85
O
C
GND
0V
0V
V
CC
5.0V
+
10%
5.0V
+
10%
3242 tbl 04
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
(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
. This is the "instant on" case temperature.
____
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)
T
BIAS
T
STG
T
JN
I
OUT
Rating
Terminal Voltage
with Respect to GND
Temperature Under Bias
Storage Temperature
Junction Temperature
DC Output Current
Commercial
& Industrial
-0.5 to +7.0
-55 to +125
-65 to +150
+150
50
Unit
V
o
Capacitance
(1)
Symbol
C
IN
C
OUT
(3)
(T
A
= +25°C, f = 1.0MH
z
)
Parameter
Input Capacitance
Output Capacitance
Conditions
(2)
V
IN
= 3dV
V
OUT
= 3dV
Max.
9
10
Unit
pF
pF
3242 tbl 07
C
C
C
o
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%.
3. Ambient Temperature Under DC Bias. No AC Conditions. Chip Deselected.
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(V
CC
= 5.0V ± 10%)
709089/79S/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
CE
0
= V
IH
or CE
1
= V
IL
, V
OUT
= 0V to V
CC
I
OL
= +4mA
I
OH
= -4mA
Min.
___
Max.
10
10
0.4
___
Unit
µA
µA
V
V
3242 tbl 08
___
___
2.4
NOTE:
1. At V
CC
< 2.0V input leakages are undefined.
6.42
4
IDT709089/79S/L
High-Speed 64/32K x 8 Synchronous Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(6)
(V
CC
= 5V ± 10%)
709089/79X6
Com'l Only
Symbol
I
CC
Parameter
Dynamic Operating
Current
(Both Ports Active)
Test Condition
CE
L
and
CE
R
= V
IL
Outputs Disabled
f = f
MAX
(1)
Version
COM'L
IND
COM'L
IND
I
SB2
Standby Current
(One Port - TTL
Level Inputs)
CE
"A"
= V
IL
and
CE
"B"
= V
IH
(3)
Active Port Outputs
Disabled, 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"
< 0.2V and
CE
"B"
> V
CC
- 0.2V
(5)
V
IN
> V
CC
- 0.2V or
V
IN
< 0.2V, Active Port Outputs
Disabled, f = f
MAX
(1)
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
S
L
S
L
Typ.
(4)
270
270
____
____
709089/79X7
Com'l Only
Typ.
(4)
250
250
____
____
709089/79X9
Com'l Only
Typ.
(4)
210
210
____
____
Max.
585
525
____
____
Max.
490
440
____
____
Max.
390
350
____
____
Unit
mA
I
SB1
Standby Current
(Both Ports - TTL
Level Inputs)
CE
L
=
CE
R
= V
IH
f = f
MAX
(1)
80
80
____
____
205
175
____
____
65
65
____
____
170
145
____
____
50
50
____
____
135
115
____
____
mA
180
180
____
____
405
360
____
____
160
160
____
____
340
295
____
____
140
140
____
____
270
240
____
____
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)
170
170
____
____
395
340
____
____
150
150
____
____
330
290
____
____
130
130
____
____
245
225
____
____
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. V
CC
= 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).
6.42
5
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