CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9, 1K x 9
Integrated Device Technology, Inc.
IDT7200L
IDT7201LA
IDT7202LA
FEATURES:
•
•
•
•
•
First-In/First-Out dual-port memory
256 x 9 organization (IDT7200)
512 x 9 organization (IDT7201)
1K x 9 organization (IDT7202)
Low power consumption
— Active: 770mW (max.)
—Power-down: 2.75mW (max.)
Ultra high speed—12ns access time
Asynchronous and simultaneous read and write
Fully expandable by both word depth and/or bit width
Pin and functionally compatible with 720X family
Status Flags: Empty, Half-Full, Full
Auto-retransmit capability
High-performance CEMOS™ technology
Military product compliant to MIL-STD-883, Class B
Standard Military Drawing #5962-87531, 5962-89666,
5962-89863 and 5962-89536 are listed on this function.
•
•
•
•
•
•
•
•
•
DESCRIPTION:
The IDT7200/7201/7202 are dual-port memories that load
and empty data on a first-in/first-out basis. The devices use
Full and Empty flags to prevent data overflow and underflow
and expansion logic to allow for unlimited expansion capability
in both word size and depth.
The reads and writes are internally sequential through the
use of ring pointers, with no address information required to
load and unload data. Data is toggled in and out of the devices
through the use of the Write (
W
) and Read (
R
) pins.
The devices utilizes a 9-bit wide data array to allow for
control and parity bits at the user’s option. This feature is
especially useful in data communications applications where
it is necessary to use a parity bit for transmission/reception
error checking. It also features a Retransmit (
RT
) capability
that allows for reset of the read pointer to its initial position
when
RT
is pulsed low to allow for retransmission from the
beginning of data. A Half-Full Flag is available in the single
device mode and width expansion modes.
The IDT7200/7201/7202 are fabricated using IDT’s high-
speed CMOS technology. They are designed for those
applications requiring asynchronous and simultaneous read/
writes in multiprocessing and rate buffer applications. Military
grade product is manufactured in compliance with the latest
revision of MIL-STD-883, Class B.
FUNCTIONAL BLOCK DIAGRAM
DATA INPUTS
(D
0
–D
8
)
W
WRITE
CONTROL
WRITE
POINTER
RAM
ARRAY
256 x 9
512 x 9
1024 x 9
READ
POINTER
R
READ
CONTROL
THREE-
STATE
BUFFERS
DATA OUTPUTS
(Q
0
–Q
8
)
RS
RESET
LOGIC
FLAG
LOGIC
EF
FF
XO
/
HF
FL
/
RT
XI
EXPANSION
LOGIC
2679 drw 01
The IDT logo is a trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996
Integrated Device Technology, Inc.
DECEMBER 1995
DSC-2679/6
5.24
1
IDT7200/7201A/7202A CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1K x 9
MILITARY AND COMMERCIAL TEMPERATURE RANGES
D
3
D
8
W
D
8
D
3
D
2
D
1
D
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
P28-1,
P28-2,
D28-1,
D28-3,
E28-2,
SO28-3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
D
4
D
5
D
6
D
7
4 3 2
D
2
D
1
D
0
5
6
7
8
9
10
11
12
13
1
32 31 30
29
28
27
26
25
24
23
22
21
D
6
D
7
NC
FL
/
RT
XI
FF
Q
0
Q
1
Q
2
Q
3
Q
8
GND
FL
/
RT
RS
EF
XO
/
HF
Q
7
Q
6
Q
5
Q
4
XI
FF
Q
0
Q
1
NC
Q
2
J32-1
&
L32-1
D
5
W
PIN CONFIGURATIONS
INDEX
NC
V
CC
D
4
RS
EF
XO
/
HF
Q
7
Q
6
14 15 16 17 18 19 20
GND
NC
R
2679 drw 02a
Q
3
Q
8
R
Q
4
Q
5
2679 drw 02b
DIP/SOIC/CERPACK
TOP VIEW
NOTE:
1. CERPACK (E28-2) and 600-mil-wide DIP (P28-1 and D28-1) not available
for 7200.
LCC/PLCC
TOP VIEW
NOTE:
1. LCC (L32-1) not available for 7200.
ABSOLUTE MAXIMUM RATINGS
Symbol
Rating
V
TERM
Terminal Voltage
with Respect
to GND
T
A
Operating
Temperature
T
BIAS
Temperature
Under Bias
T
STG
Storage
Temperature
I
OUT
DC Output
Current
(1)
RECOMMENDED DC OPERATING
CONDITIONS
Symbol
V
CCM
V
CCC
GND
V
IH(1)
V
IH(1)
Parameter
Military Supply
Voltage
Commercial Supply
Voltage
Supply Voltage
Input High Voltage
Commercial
Input High Voltage
Mlitary
Input Low Voltage
Commercial and
Military
Min.
4.5
4.5
0
2.0
2.2
—
Typ.
5.0
5.0
0
—
—
—
Max.
5.5
5.5
0
—
—
0.8
Unit
V
V
V
V
V
V
Com’l.
Mil.
Unit
–0.5 to +7.0 –0.5 to +7.0 V
0 to +70
–55 to +125
°C
°C
°C
mA
–55 to +125 –65 to +135
–55 to +125 –65 to +155
50
50
V
IL(2)
NOTE:
2679 tbl 01
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 reliabilty.
NOTE:
1. V
IH
= 2.6V for
XI
input (commercial).
V
IH
= 2.8V for
XI
input (military).
2. 1.5V undershoots are allowed for 10ns once per cycle.
2679 tbl 03
CAPACITANCE
(T
A
= +25°C, f = 1.0 MHz)
Symbol
C
IN
C
OUT
Parameter
(1)
Input Capacitance
Output Capacitance
Condition
V
IN
= 0V
V
OUT
= 0V
Max.
8
8
Unit
pF
pF
2679 tbl 02
NOTE:
1. This parameter is sampled and not 100% tested.
5.24
2
IDT7200/7201A/7202A CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1K x 9
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS
(Commercial: V
CC
= 5.0V±10%, T
A
= 0°C to +70°C; Military: V
CC
= 5.0V±10%, T
A
= –55°C to +125°C)
IDT7200L
IDT7201LA
IDT7202LA
Commercial
t
A
= 12, 15, 20 ns
Symbol
I
LI(1)
I
LO(2)
V
OH
V
OL
I
CC1(3)
I
CC2(3)
I
CC3
(L)
(3)
Parameter
Input Leakage Current (Any Input)
Output Leakage Current
Output Logic “1” Voltage I
OH
= –2mA
Output Logic “0” Voltage I
OL
= 8mA
Active Power Supply Current
Standby Current (
R
=
W
=
RS
=
FL
/
RT
=V
IH
)
Power Down Current (All Input = V
CC
- 0.2V)
Min.
–1
–10
2.4
—
—
—
—
Typ.
—
—
—
—
—
—
—
Max.
1
10
—
0.4
125
(4)
15
0.5
IDT7200L
IDT7201LA
IDT7202LA
Military
t
A
= 20 ns
Min.
–10
–10
2.4
—
—
—
—
Typ.
—
—
—
—
—
—
—
Max.
10
10
—
0.4
140
(4)
20
0.9
IDT7200L
IDT7201LA
IDT7202LA
Commercial
t
A
= 25, 35 ns
Min.
–1
–10
2.4
—
—
—
—
Typ. Max. Unit
—
—
—
—
—
—
—
1
10
—
0.4
15
0.5
µA
µA
V
V
mA
mA
2679 tbl 05
04
125
(4)
mA
NOTES:
1. Measurements with 0.4
≤
V
IN
≤
V
CC
.
2.
R
≥
V
IH
, 0.4
≤
V
OUT
≤
V
CC
.
3. I
CC
measurements are made with outputs open (only capacitive loading).
4. Tested at f = 20MHz.
DC ELECTRICAL CHARACTERISTICS (Continued)
(Commercial: V
CC
= 5.0V±10%, T
A
= 0°C to +70°C; Military: V
CC
= 5.0V±10%, T
A
= –55°C to +125°C)
IDT7200L
IDT7201LA
IDT7202LA
Military
t
A
= 30, 40 ns
Symbol
I
LI
(1)
IDT7200L
IDT7201LA
IDT7202LA
Commercial
t
A
= 50 ns
Min.
–1
–10
2.4
—
—
—
—
Typ. Max.
—
—
—
—
50
5
—
1
10
—
0.4
80
8
0.5
IDT7200L
IDT7201LA
IDT7202LA
Military
t
A
= 50, 65, 80, 120 ns
Min.
–10
–10
2.4
—
—
—
—
Typ.
—
—
—
—
70
8
—
Max. Unit
10
10
—
0.4
100
15
0.9
µA
µA
V
V
mA
mA
mA
2679 tbl 05
Parameter
Input Leakage Current (Any Input)
Output Leakage Current
Output Logic “1” Voltage I
OH
= –2mA
Output Logic “0” Voltage I
OL
= 8mA
Active Power Supply Current
Standby Current (
R
=
W
=
RS
=
FL
/
RT
=V
IH
)
Power Down Current (All Input = V
CC
- 0.2V)
Min.
–10
–10
2.4
—
—
—
—
Typ.
—
—
—
—
—
—
—
Max.
10
10
—
0.4
140
(4)
20
0.9
I
LO(2)
V
OH
V
OL
I
CC1(3)
I
CC2(3)
I
CC3
(L)
(3)
NOTES:
1. Measurements with 0.4
≤
V
IN
≤
V
CC
.
2.
R
≥
V
IH
, 0.4
≤
V
OUT
≤
V
CC
.
3. I
CC
measurements are made with outputs open (only capacitive loading).
4. Tested at f = 20MHz.
5.24
3
IDT7200/7201A/7202A CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1K x 9
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AC ELECTRICAL CHARACTERISTICS
(1)
(Commercial: V
CC
= 5.0V±10%, T
A
= 0°C to +70°C; Military: V
CC
= 5.0V±10%, T
A
= –55°C to +125°C)
Commercial
7200L12
7200L15
7201LA12 7201LA15
7202LA12 7202LA15
Symbol Parameter
t
S
t
RC
t
A
t
RR
t
RPW
t
RLZ
t
WLZ
t
DV
t
RHZ
t
WC
t
WPW
t
WR
t
DS
t
DH
t
RSC
t
RS
t
RSS
t
RSR
t
RTC
t
RT
t
RTS
t
RTR
t
EFL
t
RTF
t
REF
t
RFF
t
RPE
t
WEF
t
WFF
t
WHF
t
RHF
t
WPF
t
XOL
t
XOH
t
XI
t
XIR
t
XIS
Shift Frequency
Read Cycle Time
Access Time
Read Recovery Time
Read Pulse Width
(2)
(3)
(3, 4)
Com'l & Mil.
7200L20
7201LA20
7202LA20
—
30
—
10
20
5
5
5
—
30
20
10
12
0
30
20
20
10
—
20
20
10
—
—
—
—
—
20
—
—
—
—
20
—
—
20
10
10
33.3
—
20
—
—
—
—
—
15
—
—
—
—
—
—
—
—
—
30
—
—
—
30
30
30
20
20
—
20
20
30
30
—
20
20
—
—
—
Com'l
Military
Com'l
7200L35
7201LA35
7202LA35
—
45
—
10
35
5
10
5
—
45
35
10
18
0
45
35
35
10
—
35
35
10
—
—
—
—
—
35
—
—
—
—
35
—
—
35
10
10
22.2 MHz
—
35
—
—
—
—
—
20
—
—
—
—
—
—
—
—
—
45
—
—
—
45
45
45
30
30
—
30
30
45
45
—
35
35
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
2679 tbl 06
7200L25
7200L30
7201LA25 7201LA30
7202LA25 7202LA30
—
35
—
10
25
5
5
5
—
35
25
10
15
0
35
25
25
10
—
25
25
10
—
—
—
—
—
25
—
—
—
—
25
—
—
25
10
10
28.5
—
25
—
—
—
—
—
18
—
—
—
—
—
—
—
—
—
35
—
—
—
35
35
35
25
25
—
25
25
35
35
—
25
25
—
—
—
—
40
—
10
30
5
5
5
—
40
30
10
18
0
40
30
30
10
—
30
30
10
—
—
—
—
—
30
—
—
—
—
30
—
—
30
10
10
25
—
30
—
—
—
—
—
20
—
—
—
—
—
—
—
—
—
40
—
—
—
40
40
40
30
30
—
30
30
40
40
—
30
30
—
—
—
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Unit
—
20
—
8
12
3
3
5
(3)
50
—
12
—
—
—
—
—
12
—
—
—
—
—
—
—
—
—
12
—
—
—
12
17
20
12
14
—
12
14
17
17
—
12
12
—
—
—
—
25
—
10
15
5
5
5
—
25
15
10
11
0
25
15
15
10
—
15
15
10
—
—
—
—
—
15
—
—
—
—
15
—
—
15
10
10
40
—
15
—
—
—
—
—
15
—
—
—
—
—
—
—
—
—
25
—
—
—
25
25
25
15
15
—
15
15
25
25
—
15
15
—
—
—
Read Pulse Low to Data Bus at Low Z
Data Valid from Read Pulse High
Write Pulse High to Data Bus at Low Z
Read Pulse High to Data Bus at High Z
Write Cycle Time
Write Pulse Width
(2)
Write Recovery Time
Data Set-up Time
Data Hold Time
Reset Cycle Time
Reset Pulse Width
(2)
Reset Set-up Time
(3)
Reset Recovery Time
Retransmit Cycle Time
Retransmit Pulse Width
(2)
Retransmit Set-up Time
(3)
Retransmit Recovery Time
Reset to Empty Flag Low
Retransmit Low to Flags Valid
Read Low to Empty Flag Low
Read High to Full Flag High
Read Pulse Width after
EF
High
Write High to Empty Flag High
Write Low to Full Flag Low
Write Low to Half-Full Flag Low
Read High to Half-Full Flag High
Write Pulse Width after
FF
High
Read/Write to
XO
Low
Read/Write to
XO
High
—
20
12
8
9
0
20
12
12
8
20
12
12
8
—
—
—
—
—
12
—
—
—
—
12
—
—
12
8
8
t
HFH,FFH
Reset to Half-Full and Full Flag High
XI
Pulse Width
(2)
XI
Recovery Time
XI
Set-up Time
NOTES:
1. Timings referenced as in AC Test Conditions.
2. Pulse widths less than minimum value are not allowed.
3. Values guaranteed by design, not currently tested.
4. Only applies to read data flow-through mode.
5.24
4
IDT7200/7201A/7202A CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1K x 9
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AC ELECTRICAL CHARACTERISTICS
(1)
(Continued)
(Commercial: V
CC
= 5.0V±10%, T
A
= 0°C to +70°C; Military: V
CC
= 5.0V±10%, T
A
= –55°C to +125°C)
Military
7200 L40
7201LA40
7202LA40
Symbol
t
S
t
RC
t
A
t
RR
t
RPW
t
RLZ
t
WLZ
t
DV
t
RHZ
t
WC
t
WPW
t
WR
t
DS
t
DH
t
RSC
t
RS
t
RSS
t
RSR
t
RTC
t
RT
t
RTS
t
RTR
t
EFL
t
RTF
t
REF
t
RFF
t
RPE
t
WEF
t
WFF
t
WHF
t
RHF
t
WPF
t
XOL
t
XOH
t
XI
t
XIR
t
XIS
Parameter
Shift Frequency
Read Cycle Time
Access Time
Read Recovery Time
Read Pulse Width
(3)
Read Pulse Low to Data Bus at Low Z
(4)
Write Pulse High to Data Bus at Low Z
(4, 5)
Data Valid from Read Pulse High
Read Pulse High to Data Bus at High Z
(4)
Write Cycle Time
Write Pulse Width
(3)
Write Recovery Time
Data Set-up Time
Data Hold Time
Reset Cycle Time
Reset Pulse Width
(3)
Reset Set-up Time
(4)
Reset Recovery Time
Retransmit Cycle Time
Retransmit Pulse Width
(3)
(4)
Com'l & Mil.
7200L50
7201LA50
7202LA50
Max.
15
—
50
—
—
—
—
—
30
—
—
—
—
—
—
—
—
—
—
—
—
—
65
65
65
45
45
—
45
45
65
65
—
50
50
—
—
—
—
65
—
15
50
10
15
5
—
65
50
15
30
5
65
50
50
15
65
50
50
15
—
—
—
—
—
50
—
—
—
—
50
—
—
50
10
15
7200L65
7201LA65
7202LA65
Min.
—
80
—
15
65
10
15
5
—
80
65
15
30
10
80
65
65
15
80
65
65
15
—
—
—
—
—
65
—
—
—
—
65
—
—
65
10
15
Max.
12.5
—
65
—
—
—
—
—
30
—
—
—
—
—
—
—
—
—
—
—
—
—
80
80
80
60
60
—
60
60
80
80
—
65
65
—
—
—
Military
(2)
7200L80
7201LA80
7202LA80
Min.
—
100
—
20
80
10
20
5
—
100
80
20
40
10
100
80
80
20
100
80
80
20
—
—
—
—
—
80
—
—
—
—
80
—
—
80
10
15
Max.
10
—
80
—
—
—
—
—
30
—
—
—
—
—
—
—
—
—
—
—
—
—
100
100
100
60
60
—
60
60
100
100
—
80
80
—
—
—
7200L120
7201LA120
7202LA120
Min.
—
140
—
20
120
10
20
5
—
140
120
20
40
10
140
120
120
20
140
120
120
20
—
—
—
—
—
120
—
—
—
—
120
—
—
120
10
15
Max.
7
—
120
—
—
—
—
—
35
—
—
—
—
—
—
—
—
—
—
—
—
—
140
140
140
60
60
—
60
60
140
140
—
120
120
—
—
—
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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ns
2679 tbl 07
Min.
—
50
—
10
40
5
10
5
—
50
40
10
20
0
50
40
40
10
50
40
40
10
—
—
—
—
—
40
—
—
—
—
40
—
—
40
10
10
Max. Min.
20
—
40
—
—
—
—
—
25
—
—
—
—
—
—
—
—
—
—
—
—
—
50
50
50
30
35
—
35
35
50
50
—
40
40
—
—
—
Retransmit Set-up Time
Retransmit Recovery Time
Reset to Empty Flag Low
Retransmit Low to Flags Valid
Read Low to Empty Flag Low
Read High to Full Flag High
Read Pulse Width after
EF
High
Write High to Empty Flag High
Write Low to Full Flag Low
Write Low to Half-Full Flag Low
Read High to Half-Full Flag High
Write Pulse Width after
FF
High
Read/Write to
XO
Low
Read/Write to
XO
High
t
HFH,FFH
Reset to Half-Full and Full Flag High
XI
Pulse Width
XI
Recovery Time
XI
Set-up Time
(3)
NOTES:
1. Timings referenced as in AC Test Conditions
2. Speed grades 65, 80 and 120 not available in the CERPACK
3. Pulse widths less than minimum value are not allowed.
4. Values guaranteed by design, not currently tested.
5. Only applies to read data flow-through mode.
5.24
5
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