HIGH-SPEED 8/4K x 18
SYNCHRONOUS PIPELINED
DUAL-PORT STATIC RAM
Features
◆
◆
IDT709359/49L
◆
◆
◆
◆
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
High-speed clock to data access
– Commercial: 6.5/7.5/9ns (max.)
– Industrial: 7.5ns (max.)
Low-power operation
– IDT709359/49L
Active: 925mW (typ.)
Standby: 2.5mW (typ.)
Flow-Through or Pipelined output mode on either Port via
the
FT/PIPE
pins
Counter enable and reset features
Dual chip enables allow for depth expansion without
additional logic
◆
◆
◆
◆
◆
◆
Full synchronous operation on both ports
– 3.5ns setup to clock and 0ns 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 Pipelined output mode
Separate upper-byte and lower-byte controls for
multiplexed bus and bus matching compatibility
TTL- compatible, single 5V (±10%) power supply
Industrial temperature range (–40°C to +85°C) is
available for 83 MHz
Available in a 100-pin Thin Quad Flatpack (TQFP) package
Green parts available, see ordering informaiton
Functional Block Diagram
R/
W
L
UB
L
CE
0L
R/
W
R
UB
R
CE
0R
CE
1L
LB
L
OE
L
1
0
0/1
1
0
0/1
CE
1R
LB
R
OE
R
FT
/PIPE
L
0/1
1b 0b
b a
1a 0a
0a 1a
a
b
0b 1b
0/1
FT
/PIPE
R
I/O
9L
-I/O
17L
I/O
0L
-I/O
8L
I/O
Control
I/O
9R
-I/O
17R
I/O
Control
I/O
0R
-I/O
8R
A
12L
(1)
A
0L
CLK
L
Counter/
Address
Reg.
MEMORY
ARRAY
Counter/
Address
Reg.
A
12R
(1)
A
0R
CLK
R
ADS
L
CNTEN
L
CNTRST
L
ADS
R
CNTEN
R
CNTRST
R
5633 drw 01
NOTE:
1. A
12
is a NC for IDT709349.
MAY 2015
1
©2015 Integrated Device Technology, Inc.
DSC-5633/4
IDT709359/49L
High-Speed 8/4K x 18 Synchronous Pipelined Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Description
The IDT709359/49 is a high-speed 8/4K x 18 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 IDT709359/49 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 CMOS high-performance technology, these
devices typically operate on only 925mW of power.
Pin Configurations
(1,2,3,4)
Index
A
8L
A
7L
A
6L
A
5L
A
4L
A
3L
A
2L
A
1L
A
0L
CNTEN
L
CLK
L
ADS
L
GND
GND
ADS
R
CLK
R
CNTEN
R
A
0R
A
1R
A
2R
A
3R
A
4R
A
5R
A
6R
A
7R
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
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
A
9L
A
10L
A
11L
A
12L
(1)
NC
NC
NC
LB
L
UB
L
CE
0L
CE
1L
CNTRST
L
R/W
L
OE
L
V
CC
FT/PIPE
L
I/O
17L
I/O
16L
GND
I/O
15L
I/O
14L
I/O
13L
I/O
12L
I/O
11L
I/O
10L
709359/49PF
PN100
(5)
100-Pin TQFP
Top View
(6)
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
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
A
8R
A
9R
A
10R
A
11R
A
12R
(1)
NC
NC
NC
LB
R
UB
R
CE
0R
CE
1R
CNTRST
R
R/W
R
GND
OE
R
FT/PIPE
R
I/O
17R
GND
I/O
16R
I/O
15R
I/O
14R
I/O
13R
I/O
12R
I/O
11R
I/O
9L
I/O
8L
V
CC
I/O
7L
I/O
6L
I/O
5L
I/O
4L
I/O
3L
I/O
2L
GND
I/O
1L
I/O
0L
GND
I/O
0R
I/O
1R
I/O
2R
I/O
3R
I/O
4R
I/O
5R
I/O
6R
V
CC
I/O
7R
I/O
8R
I/O
9R
I/O
10R
NOTES:
1. A
12
is a NC for IDT709349.
2. All V
CC
pins must be connected to power supply.
3. All GND pins must be connected to ground.
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.
5633 drw 02
2
6.42
IDT709359/49L
High-Speed 8/4K x 18 Synchronous Pipelined 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
12L
(1)
I/O
0L
- I/O
17L
CLK
L
UB
L
LB
L
ADS
L
CNTEN
L
CNTRST
L
FT/PIPE
L
Right Port
CE
0R
, CE
1R
R/W
R
OE
R
A
0R
- A
12R
(1)
I/O
0R
- I/O
17R
CLK
R
UB
R
LB
R
ADS
R
CNTEN
R
CNTRST
R
FT/PIPE
R
V
CC
GND
Names
Chip Enables
(3)
Read/Write Enable
Output Enable
Address
Data Input/Output
Clock
Upper Byte Select
(2)
Lower Byte Select
(2)
Address Strobe
Counter Enable
Counter Reset
Flow-Through/Pipeline
Power (5V)
Ground (0V)
5633 tbl 01
NOTES:
1. A
12
is a NC for IDT709349.
2.
LB
and
UB
are single buffered regardless of state of
FT/PIPE.
3.
CEo
and CE
1
are single buffered when
FT/PIPE
= V
IL
,
CEo
and CE
1
are double buffered when
FT/PIPE
= V
IH
,
i.e. the signals take two cycles to deselect.
Truth Table I—Read/Write and Enable Control
(1,2,3)
OE
X
X
X
X
X
X
L
L
L
H
CLK
↑
↑
↑
↑
↑
↑
↑
↑
↑
X
CE
0
(5)
H
X
L
L
L
L
L
L
L
L
CE
1
(5)
X
L
H
H
H
H
H
H
H
H
UB
(4)
X
X
H
L
H
L
L
H
L
X
LB
(4)
X
X
H
H
L
L
H
L
L
X
R/W
X
X
X
L
L
L
H
H
H
X
Upper Byte
I/O
9-17
High-Z
High-Z
High-Z
DATA
IN
High-Z
DATA
IN
DATA
OUT
High-Z
DATA
OUT
High-Z
Lower B
yte
I/O
0-8
High-Z
High-Z
High-Z
High-Z
DATA
IN
DATA
IN
High-Z
DATA
OUT
DATA
OUT
High-Z
Mode
Deselected—Power Down
Deselected—Power Down
Both Bytes Deselected
Write to Upper Byte Only
Write to Lower Byte Only
Write to Both Bytes
Read Upper Byte Only
Read Lower Byte Only
Read Both Bytes
Outputs Disabled
5633 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 signa
4.
LB
and
UB
are single buffered regardless of state of
FT/PIPE.
5.
CEo
and CE
1
are single buffered when
FT/PIPE
= V
IL
.
CEo
and CE
1
are double buffered when
FT/PIPE
= V
IH
, i.e. the signals take two cycles to deselect.
6.42
3
IDT709359/49L
High-Speed 8/4K x 18 Synchronous Pipelined Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
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 Addre ss Blocked—Counter disab led (An + 1 reused)
Counter Reset to Address 0
5633 tbl 03
MODE
NOTES:
1. "H" = V
IH,
"L" = V
IL,
"X" = Don't Care.
2.
CE
0
,
LB, UB,
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
and
CNTRST
are independent of all other signals including
CE
0
, CE
1
,
UB
and
LB.
5. The address counter advances if
CNTEN
= V
IL
on the rising edge of CLK, regardless of all other signals including
CE
0
, CE
1
,
UB
and
LB.
Recommended Operating
Recommended DC Operating
(1)
Temperature and Supply Voltage
Conditions
Grade
Commercial
Industrial
Ambient
Temperature
(1)
0
O
C to +70
O
C
-40 C to +85 C
O
O
GND
0V
0V
Vcc
5.0V
+
10%
5.0V
+
10%
5633 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
5633 tbl 05
NOTES:
1. Industrial temperature: for specific speeds, packages and powers contact your
sales office.
2. 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)
Capacitance
(1)
Unit
V
Symbol
C
IN
C
OUT
(3)
Parameter
Input Capacitance
Rating
Terminal Voltage
with Respect
to GND
Temperature
Under Bias
Storage
Temperature
DC Output
Current
Commercial
& Industrial
-0.5 to +7.0
(T
A
= +25°C, f = 1.0MH
z
)
Conditions
(2)
V
IN
= 3dV
V
OUT
= 3dV
Max.
9
10
Unit
pF
pF
5633 tbl 07
Output Capacitance
T
BIAS
T
STG
I
OUT
-55 to +125
-65 to +150
50
o
C
C
o
mA
5633 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%.
4
6.42
IDT709359/49L
High-Speed 8/4K x 18 Synchronous Pipelined Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the Operating
Temperature Supply Voltage Range
(V
CC
= 5.0V ± 10%)
709359/49L
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.
5
5
0.4
___
Unit
µA
µA
V
V
5633 tbl 08
2.4
NOTE:
1. At Vcc < 2.0V input leakages are undefined.
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(3)
(V
CC
= 5V ± 10%)
709359/49L6
Com'l Only
Symbol
I
CC
Parameter
Dynamic Operating
Current
(Both Ports Active)
Standby Current
(Both Ports - TTL
Level Inputs)
Standby Current
(One Port - TTL
Level Inputs)
Full Standby Current
(Both Ports -
CMOS Level Inputs)
Full Standby Current
(One Port -
CMOS Level Inputs)
Test Condition
CE
L
and
CE
R
= V
IL
Outputs Disabled
f = f
MAX
(1)
CE
L
=
CE
R
= V
IH
f = f
MAX
(1)
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)
Version
COM'L
IND
COM'L
IND
COM'L
IND
COM'L
IND
COM'L
IND
L
L
L
L
L
L
L
L
L
L
Typ.
(4)
230
____
709359/49L7
Com'l & Ind
Typ.
(4)
210
210
40
40
135
135
0.5
0.5
130
130
Max.
400
440
105
120
220
235
3.0
3.0
190
205
709359/49L9
Com'l Only
Typ.
(4)
185
____
Max.
430
____
Max.
360
____
Unit
mA
I
SB1
45
____
115
____
35
____
95
____
mA
I
SB2
150
____
235
_____
120
____
205
____
mA
I
SB3
0.5
____
3.0
_____
0.5
____
3.0
____
mA
I
SB4
160
____
210
_____
110
____
170
____
mA
5633 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.
6.42
5
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