IDT709189/79L
HIGH-SPEED 64/32K x 9
SYNCHRONOUS PIPELINED
OBSOLETE PARTS
DUAL-PORT STATIC RAM
Features
◆
◆
◆
◆
◆
◆
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
High-speed clock to data access
– Commercial: 6.5/7.5/9/12ns (max.)
– Industrial: 9ns (max.)
Low-power operation
– IDT709189/79L
Active: 1.2W (typ.)
Standby: 2.5mW (typ.)
Flow-Through or Pipelined output mode on either Port via
the
FT/PIPE
pins
Counter enable and reset features
◆
◆
◆
Functional Block Diagram
R/W
L
OE
L
FT/PIPE
L
I/O
0L
- I/O
8L
A
0L
CLK
L
ADS
L
CNTEN
L
CNTRST
L
S OR
T F
R
A D
P E
E ND S
T E
E
N
L M IG
O M S
S O
E
B C
D
O E
R EW
T N
O
N
◆
Dual chip enables allow for depth expansion without
additional logic
Full synchronous operation on both ports
– 4ns 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
TTL- compatible, single 5V (±10%) power supply
Industrial temperature range (–40°C to +85°C) is
available for selected speeds
Available in a 100-pin Thin Quad Flatpack (TQFP) package
R/W
R
OE
R
CE
0L
CE
1L
1
0
0/1
1
0
0/1
CE
0R
CE
1R
0/1
1
0
0
1
0/1
FT/PIPE
R
,
I/O
0R
- I/O
8R
I/O
Control
I/O
Control
A
15L
(1)
A
15R
(1)
A
0R
CLK
R
ADS
R
CNTEN
R
CNTRST
R
4848 drw 01
Counter/
Address
Reg.
MEMORY
ARRAY
Counter/
Address
Reg.
NOTE:
1. A
15X
is a NC for IDT709179.
JANUARY 2009
1
©2009 Integrated Device Technology, Inc.
DSC-4848/5
IDT709189/79L
High-Speed 64/32K x 9 Synchronous Pipelined Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Description
The IDT709189/79 is a high-speed 64/32K x 9 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 IDT709189/79 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 1.2W of power.
Pin Configurations
(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
GND
ADS
R
CLK
R
CNTEN
R
A
0R
A
1R
A
2R
A
3R
A
4R
A
5R
A
6R
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
01/15/04
Index
NC
NC
A
7L
A
8L
A
9L
A
10L
A
11L
A
12L
A
13L
A
14L
A
15L
(1)
NC
V
CC
NC
NC
NC
NC
CE
0L
CE
1L
CNTRST
L
R/W
L
OE
L
FT/PIPE
L
NC
NC
IDT709189/79PF
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
(1)
NC
GND
NC
NC
NC
NC
CE
0R
CE
1R
CNTRST
R
R/W
R
OE
R
FT/PIPE
R
GND
NC
4848 drw 02
,
NOTES:
1. A
15X
is a NC for IDT709179.
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.
GND
I/O
8L
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
I/O
8R
NC
NC
2
6.42
IDT709189/79L
High-Speed 64/32K x 9 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
15L
(1)
I/O
0L
- I/O
8L
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
8R
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
4848 tbl 01
NOTE:
1. A
15X
is a NC for IDT709179.
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
0-8
High-Z
High-Z
DATA
IN
DATA
OUT
High-Z
Deselected—Power Down
Deselected—Power Down
Write
Read
Outputs Disabled
4848 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.
Truth Table II—Address Counter Control
(1,2,6)
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
4848 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. While an external address is being loaded (ADS = V
IL
), R/W = V
IH
is recommended to ensure data is not written arbitrarily.
3
6.42
IDT709189/79L
High-Speed 64/32K x 9 Synchronous Pipelined Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Recommended Operating
Recommended DC Operating
Temperature and Supply Voltage Conditions
Grade
Commercial
Industrial
Ambient
Temperature
(2)
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%
4848 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
4848 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
T
BIAS
T
STG
T
JN
I
OUT
(2)
Capacitance
(1)
Unit
V
o
o
o
Rating
Terminal Voltage
with Respect to GND
TemperatureUnder Bias
Storage Temperature
Junction Temperature
DC Output Current
Commercial
& Industrial
-0.5 to +7.0
-55 to +125
-65 to +150
+150
50
(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
4848 tbl 07
C
C
C
mA
4848 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 Bias. No AC Conditions. Chip Deselected.
DC Electrical Characteristics Over the Operating
Temperature Supply Voltage Range
(V
CC
= 5.0V ± 10%)
709189/79L
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
4848 tbl 08
2.4
NOTE:
1. At V
DD
< 2.0V input leakages are undefined.
4
6.42
IDT709189/79L
High-Speed 64/32K x 9 Synchronous Pipelined Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(3)
(V
CC
= 5V ± 10%)
709189/79L6
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)
270
____
709189/79L7
Com'l Only
Typ.
(4)
250
____
709189/79L9
Com'l
& Ind
Typ.
(4)
250
300
80
95
175
175
0.5
0.5
170
190
Max.
400
430
135
160
275
295
3.0
6.0
270
290
709189/79L12
Com'l Only
Typ.
(4)
230
____
Max.
525
____
Max.
440
____
Max.
355
____
Unit
mA
I
SB1
80
____
175
____
65
____
145
____
70
____
110
____
mA
I
SB2
180
____
360
____
160
____
295
____
150
____
240
____
mA
I
SB3
0.2
____
5
____
0.2
____
5.0
____
0.5
____
3.0
____
mA
I
SB4
170
____
340
____
150
____
290
____
140
____
225
____
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
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.
4848 tbl 09
5
6.42
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
