HIGH-SPEED 3.3V
32/16K x 16
SYNCHRONOUS
DUAL-PORT STATIC RAM
Features:
◆
◆
IDT70V9279/69S/L
◆
◆
◆
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
High-speed clock to data access
– Commercial: 6.5/7.5/9/12/15ns (max.)
– Industrial: 7.5ns (max.)
Low-power operation
– IDT70V9279/69S
Active: 429mW (typ.)
Standby: 3.3mW (typ.)
– IDT70V9279/69L
Active: 429mW (typ.)
Standby: 1.32mW (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 Pipelined output mode
Separate upper-byte and lower-byte controls for
multiplexed bus and bus matching compatibility
LVTTL- compatible, single 3.3V (±0.3V) power supply
Industrial temperature range (–40°C to +85°C) is
available for selected speeds
Available in a 128-pin Thin Quad Flatpack (TQFP) package
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 0bb
a 1a 0a
0a 1a
a
0b 1b
b
0/1
FT
/PIPE
R
,
I/O
8L
-I/O
15L
I/O
Control
I/O
0L
-I/O
7L
I/O
Control
I/O
8R
-I/O
15R
I/O
0R
-I/O
7R
A
14L
(1)
A
0L
CLK
L
Counter/
Address
Reg.
MEMORY
ARRAY
Counter/
Address
Reg.
A
14R
(1)
A
0R
CLK
R
ADS
L
CNTEN
L
CNTRST
L
ADS
R
CNTEN
R
CNTRST
R
3743 drw 01
NOTE:
1. A
14X
is a NC for IDT70V9269.
MAY 2004
1
©2004 Integrated Device Technology, Inc.
DSC 3743/8
IDT70V9279/69S/L
High-Speed 32/16K x 16 Dual-Port Synchronous Static RAM
Industrial and Commercial Temperature Ranges
The IDT70V9279/69 is a high-speed 32/16K x 16 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.
Description:
With an input data register, the IDT70V9279/69 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 429mW of power.
A
10R
A
11R
A
12R
A
13R
A
14R
(1)
N/C
N/C
N/C
LB
R
UB
R
CE
0R
CE
1R
CNTRST
R
V
DD
V
SS
R/W
R
OE
R
N/C
N/C
N/C
N/C
A
9R
A
8R
A
7R
A
6R
A
5R
A
4R
A
3R
A
2R
A
1R
A
0R
N/C
CNTEN
R
CLK
R
ADS
R
V
SS
V
DD
ADS
L
CLK
L
CNTEN
L
N/C
A
0L
A
1L
A
2L
A
3L
A
4L
A
5L
A
6L
A
7L
A
8L
A
9L
N/C
N/C
N/C
N/C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
104
103
I/O
11R
01/15/04
FT/PIPE
R
Vss
I/O
15R
I/O
14R
I/O
13R
I/O
12R
V
DD
V
DD
Pin Configuration
(2,3,4)
70V9279/69PRF
PK-128
(5)
128-Pin TQFP
Top View
(6)
102
101
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
74
73
72
71
70
69
68
67
66
65
I/O
10R
I/O
9R
V
SS
N/C
I/O
8R
N/C
N/C
I/O
7R
V
DD
I/O
6R
I/O
5R
I/O
4R
V
SS
I/O
3R
V
DD
I/O
2R
I/O
1R
I/O
0R
V
SS
V
DD
I/O
0L
I/O
1L
V
SS
I/O
2L
I/O
3L
V
SS
I/O
4L
I/O
5L
I/O
6L
I/O
7L
V
DD
N/C
N/C
I/O
8L
N/C
V
DD
I/O
9L
I/O
10L
3743 drw 02
NOTES:
1. A
14X
is a NC for IDT70V9269.
2. All V
DD
pins must be connected to power supply.
3. All V
SS
pins must be connected to ground.
4. Package body is approximately 14mm x 20mm 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.
A
14L
(1)
N/C
N/C
N/C
LB
L
UB
L
CE
0L
CE
1L
CNTRST
L
V
DD
V
SS
R/W
L
OE
L
FT/PIPE
L
V
SS
I/O
15L
I/O
14L
I/O
13L
I/O
12L
V
DD
V
SS
I/O
11L
A
10L
A
11L
A
12L
A
13L
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
6.42
2
IDT70V9279/69S/L
High-Speed 32/16K x 16 Dual-Port Synchronous Static RAM
Industrial and Commercial Temperature Ranges
Pin Names
Left Port
CE
0L,
CE
1L
R/W
L
OE
L
A
0L
- A
14L
(1)
I/O
0L
- I/O
15L
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
14R
(1)
I/O
0R
- I/O
15R
CLK
R
UB
R
LB
R
ADS
R
CNTEN
R
CNTRST
R
FT/PIPE
R
V
DD
V
SS
Names
Chip Enables
(3)
Read/Write Enable
Output Enable
Address
Data Input/Output
Clock
Upper Byte Select
(2)
Lower Byte Select
(2)
Address Strobe Enable
Counter Enable
Counter Reset
Flow-Through / Pipeline
Power (3.3V)
Ground (0V)
3743 tbl 01
NOTES:
1. Address A
14X
is a NC for IDT70V9269.
2.
LB
and
UB
are single buffered regardless of state of
FT/PIPE.
3.
CE
0
and CE
1
are single buffered when
FT/PIPE
= V
IL
,
CE
0
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
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
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
L
LB
(4)
X
X
H
H
L
L
H
L
L
L
R/W
X
X
X
L
L
L
H
H
H
X
Upper Byte
I/O
8-15
High-Z
High-Z
High-Z
D
IN
High-Z
DATA
IN
DATA
OUT
High-Z
DATA
OUT
High-Z
Lower Byte
I/O
0-7
High-Z
High-Z
High-Z
High-Z
DATA
IN
DATA
IN
High-Z
DATA
OUT
DATA
OUT
High-Z
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
3743 tbl 02
MODE
NOTES:
1. "H" = V
IH,
"L" = V
IL,
"X" = Don't Care.
2.
ADS, CNTEN, CNTRST
= X.
3.
OE
is an asynchronous input signal.
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
IDT70V9279/69S/L
High-Speed 32/16K x 16 Dual-Port Synchronous Static RAM
Industrial and Commercial Temperature Ranges
Truth Table II—Address Counter Control
(1,2,3)
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
3743 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
Temperature and Supply Voltage
(1,2)
Grade
Commercial
Industrial
Ambient
Temperature
0
O
C to +70
O
C
-40
O
C to +85
O
C
GND
0V
0V
V
DD
3.3V
+
0.3V
3.3V
+
0.3V
3743 tbl 04
Recommended DC Operating
Conditions
Symbol
V
DD
V
SS
V
IH
V
IL
Parameter
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
Min.
3.0
0
2.2
-0.3
(1)
Typ.
3.3
0
____
____
Max.
3.6
0
V
DD
+0.3V
(2)
0.8
Unit
V
V
V
V
3743 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
IL
> -1.5V for pulse width less than 10 ns.
2. V
TERM
must not exceed V
DD
+ 0.3V.
Absolute Maximum Ratings
(1)
Symbol
V
TERM
(2)
Capacitance
(1)
Unit
V
Rating
Terminal Voltage
with Respect to
GND
Temperature Under Bias
StorageTemperature
Junction Temperature
DC Output Current
Commercial
& Industrial
-0.5 to +4.6
(T
A
= +25°C, f = 1.0MH
Z
)
Symbol
C
IN
C
OUT
(3)
Parameter
Input Capacitance
Output Capacitance
Conditions
(2)
V
IN
= 3dV
V
OUT
= 3dV
Max.
9
10
Unit
pF
pF
3743 tbl 07
T
BIAS
T
STG
T
JN
I
OUT
(3)
-55 to +125
-65 to +150
+150
50
o
o
o
C
C
C
mA
3743 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
DD
+ 0.3V for more than 25% of the cycle time or 10ns
maximum, and is limited to < 20mA for the period of V
TERM
> V
DD
+ 0.3V.
3. Ambient Temperature Under DC Bias. No AC Conditions. Chip Deselected.
6.42
4
IDT70V9279/69S/L
High-Speed 32/16K x 16 Dual-Port Synchronous Static RAM
Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(V
DD
= 3.3V ± 0.3V)
70V9279/69S
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
DD
= 3.6V, V
IN
= 0V t
o
V
DD
CE0
= V
IH
or CE
1
= V
IL
, V
OUT
= 0V t
o
V
DD
I
OL
= +4mA
I
OH
= -4mA
Min.
___
___
___
70V9279/69L
Min.
___
___
___
Max.
10
10
0.4
___
Max.
5
5
0.4
___
Unit
µA
µA
V
V
3743 tbl 08
2.4
2.4
NOTE:
1. At V
DD
< 2.0V input leakages are undefined.
DC Electrical Characteristics Over the Operating
Temperature Supply Voltage Range
(3,6)
(V
DD
= 3.3V ± 0.3V)
70V9279/69X6
Com'l Only
Symbol
I
DD
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)
Version
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)
220
220
____
____
70V9279/69X7
Com'l Only
Typ.
(4)
200
200
____
____
70V9279/69X9
Com'l
& Ind
Typ.
(4)
180
180
180
180
50
50
50
50
110
110
110
110
1.0
0.4
1.0
0.4
100
100
100
100
Max.
260
225
270
235
75
65
85
75
170
150
180
160
5
3
5
3
160
140
170
150
3743 tbl 09a
Max.
395
350
____
____
Max.
335
290
____
____
Unit
mA
I
SB1
CE
L
=
CE
R
= V
IH
f = f
MAX
(1)
70
70
____
____
145
130
____
____
60
60
____
____
115
100
____
____
mA
I
SB2
COM'L
CE
"A"
= V
IL
and
CE
"B"
= V
IH
(5)
Active Port Outputs Disabled,
IND
f=f
MAX
(1)
Both Ports
CE
L
and
CE
R
> V
DD
- 0.2V,
V
IN
> V
DD
- 0.2V or
V
IN
< 0.2V, f = 0
(2)
CE
"A"
< 0.2V and
CE
"B"
> V
DD
- 0.2V
(5)
V
IN
> V
DD
- 0.2V or
V
IN
< 0.2V, Active Port,
Outputs Disabled, f = f
MAX
(1)
COM'L
IND
COM'L
IND
150
150
____
____
280
250
____
____
130
130
____
____
240
210
____
____
mA
I
SB3
1.0
0.4
____
____
5
3
____
____
1.0
0.4
____
____
5
3
____
____
mA
I
SB4
140
140
____
____
270
240
____
____
120
120
____
____
230
200
____
____
mA
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 V
SS
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
DD
= 3.3V, T
A
= 25°C for Typ, and are not production tested. I
DD DC
(f=0) = 90mA (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
DD
- 0.2V
CE
X
> V
DD
- 0.2V means
CE
0X
> V
DD
- 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 rating (S or L).
6.42
5
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